Intelligent leakage current measuring and early warning equipment and use method thereof

Abstract

The invention discloses intelligent leakage current measuring and early warning equipment and a use method thereof. The intelligent leakage current measuring and early warning equipment comprises a control processing unit, comprising an outer housing, a PCB arranged at the bottom of an inner cavity of the outer housing, a data processing module arranged at the top of the PCB and used for processing measured data, and a data analysis module arranged at the top of the PCB and used for analyzing and judging the measured data. According to the invention, through real-time analysis of measured data by the data analysis module, in combination with a preset threshold discrimination algorithm, the device can immediately trigger the audible and visual alarm when leakage current exceeds a standard, and is connected with the cloud server and the mobile phone terminal in cooperation with the wireless communication module, so that remote real-time early warning and data sharing are realized; the risk that important abnormal leakage current data information is missed due to negligence or fatigue of personnel is effectively avoided, the safety of an electrical system is remarkably improved, the equipment can be fixed in a specific area for real-time measurement through the design of the adjusting unit, the equipment does not need to be held by the personnel, and the use convenience and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage current measurement equipment, and in particular to an intelligent leakage current measurement and early warning device and a use method thereof. Background Art

[0002] Leakage current measurement equipment is a crucial tool in the field of electrical safety. It is used to detect and measure tiny currents that should not exist in electrical systems or equipment, namely leakage current. The presence of leakage current may indicate degraded electrical insulation performance, equipment aging, or potential fault points, all of which may cause safety accidents such as electrical fires and electric shocks. Therefore, accurate and reliable leakage current measurement is of great significance to ensuring electrical safety and preventing electrical accidents.

[0003] In the prior art, leakage current measurement equipment typically uses a clamp meter as the primary measurement tool. The clamp meter's unique jaw design allows for convenient internal detection of the conductor in the circuit being measured without disconnecting the circuit. The measurement process is based on the principle of electromagnetic induction. When current flows through the conductor, a magnetic field is generated around the clamp meter's jaws. This magnetic field is captured by the clamp meter's internal sensor and converted into an electrical signal. After amplification and filtering, this electrical signal is processed to display the leakage current data on the clamp meter's display, thereby achieving leakage current measurement. Although leakage current measurement equipment in the existing technology, such as clamp meters, can meet measurement needs to a certain extent, traditional clamp meters usually only have measurement functions and lack a real-time early warning mechanism. This means that even if the leakage current exceeds the standard, the device cannot automatically issue an alarm. Personnel are required to pay attention to the measurement results and make judgments at all times, which is relatively inefficient. In addition, personnel are required to hold the clamp during measurement. For long-term detection operations, personnel are prone to fatigue, and then miss important abnormal leakage current data information due to negligence or fatigue. Therefore, when the leakage situation in the electrical system reaches a dangerous level, personnel may not be able to receive the alarm in time and take corresponding measures, which may lead to safety accidents such as electrical fires and electric shocks, seriously endangering the safety of personnel and the normal operation of electrical equipment. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent leakage current measurement and early warning device and a method of using the same, which has the advantages of no need for handheld measurement and can achieve real-time monitoring and automatic early warning. It solves the problem that traditional clamp meters usually only have measurement functions but lack a real-time early warning mechanism, resulting in personnel being unable to receive alarms and take corresponding measures in time, which can easily lead to safety accidents such as electrical fires and electric shocks, seriously endangering the safety of personnel and the normal operation of electrical equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent leakage current measurement and early warning device, comprising: A control processing unit includes an outer housing, a PCB disposed at the bottom of an inner cavity of the outer housing, a data processing module disposed on top of the PCB and configured to process measurement data, a data analysis module disposed on top of the PCB and configured to analyze and determine the measurement data, a positioning module disposed on top of the PCB and configured to sense position information, a display screen disposed on top of the outer housing and configured to display measurement data, sound and light alarms disposed on both sides of the outer housing and configured to emit sound and light alarms, and a wireless communication module disposed on top of the PCB and configured to facilitate transmission of the measurement data to other devices. A data acquisition unit, comprising a clamp head for clamping the conductor under test, a current transformer for measuring leakage current data of the conductor under test, and a trigger for controlling the opening and closing of the clamp head; The adjustment unit includes a base box, a mounting plate fixedly connected to the bottom of the base box, a screw sleeve movably connected to one side of the base box through a bearing, a screw threadedly connected to the inner cavity of the screw sleeve, and a universal shaft connected to one end of the screw and the other end of which is connected to the data acquisition unit.

[0006] Preferably, a knob for switching to different measurement modes and a button for switching measurement functions are respectively provided on the top of the outer cover shell, and a power supply module is provided on one side of the inner cavity of the outer cover shell.

[0007] Preferably, the output end of the data acquisition unit is connected to the input end of the data processing module through a wireless communication module, the output end of the data processing module is connected to the input end of the data analysis module, the output end of the data analysis module is connected to the cloud server, the sound and light alarm and the input end of the mobile phone through the wireless communication module, and the positioning module is connected to the cloud service and the mobile phone through the wireless communication module.

[0008] Preferably, the data processing module includes an amplifier for amplifying the measurement data signal, a filter for filtering the measurement data signal, and an analog-to-digital converter for converting the measurement data signal into a digital signal.

[0009] Preferably, the data analysis module includes a data threshold discrimination algorithm, and its algorithm formula is: ,in, is the current leakage current value, It is a preset threshold. If the leakage current value is greater than the threshold, it is judged as abnormal.

[0010] Preferably, one end of the screw is located in the inner cavity of the bottom box and is fixedly connected to a limiting plate. Limiting grooves are provided on both sides of the inner cavity of the bottom box. Both ends of the limiting plate extend to the inner cavity of the limiting groove and are slidably connected to the inner cavity of the limiting groove.

[0011] Preferably, the method of use comprises the following steps: S1. First, the personnel take the device and install it on the position of the conductor to be tested through the mounting plate, which can alleviate the situation where the personnel need to hold the device for a long time when measuring the leakage current later; S2. Then, by rotating the screw sleeve, since the screw sleeve is threadedly connected to the screw rod, the screw rod is driven to move to one side during the rotation of the screw sleeve, and the screw rod drives the universal shaft and the data acquisition unit to move to one side, so that the position of the data acquisition unit can be adjusted according to the distance from the wire. At the same time, the data acquisition unit can be rotated, and the angle of the data acquisition unit can be adjusted through the universal shaft, which is convenient for adapting to wire measurement in different directions, improving the convenience of use and measurement stability, and no need for personnel to hold the hand during measurement, reducing personnel fatigue and improving the safety of use; S3. When it is necessary to measure and monitor the leakage current of the conductor, the personnel can control the opening and closing of the clamp head by using the trigger to clamp the conductor in the circuit under test. At this time, the current transformer will use the principle of electromagnetic induction to measure the current passing through the conductor, collect the leakage current signal in the circuit, and convert it into an electrical signal for output; S4. The electrical signal is transmitted to the data processing module through the wireless communication module. The amplifier in the data processing module amplifies the output electrical signal to enhance its signal strength. At the same time, the filter removes high-frequency noise to make the signal purer. The processed analog electrical signal is then converted into a digital signal through an analog-to-digital converter for subsequent processing and analysis. S5. The data processing module then transmits the processed digital signal data to the data analysis module. The data analysis module extracts leakage current-related features from the digital signal, such as the signal amplitude, frequency, and phase. These features are used for subsequent leakage current determination. A threshold discrimination algorithm is then used to compare the extracted features with a preset threshold. If the features exceed the threshold, it is determined that the leakage current is abnormal. S6. When the leakage current is abnormal, the data analysis module sends a signal to the sound and light alarm through the wireless communication module, causing the sound and light alarm to sound and light alarm, and at the same time sends leakage abnormality information to the cloud server and mobile phone. The personnel can view the leakage current data through the cloud server or mobile phone, so that the personnel can timely understand the leakage abnormality of the wire. The cloud server will use the wireless communication module to retrieve the position of the abnormal leakage wire located by the positioning module, so that the personnel can go there to cut off the power in time, thereby realizing automatic early warning. The personnel can receive the alarm in time and take corresponding measures to prevent the occurrence of safety accidents such as electrical fire or electric shock.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention integrates a data processing module, a data analysis module and a wireless communication module to realize automatic collection, processing, analysis and remote transmission of data, reduce manual intervention, and improve measurement efficiency and accuracy. Through real-time analysis of measurement data by the data analysis module and combined with a preset threshold judgment algorithm, the device can immediately trigger an audible and visual alarm when the leakage current exceeds the standard, and cooperate with the wireless communication module to connect with the cloud server and mobile phone terminal, realizing remote real-time early warning and data sharing, greatly improving the convenience of use, effectively avoiding the risk of missing important abnormal leakage current data information due to negligence or fatigue of personnel, and significantly improving the safety of the electrical system. The design of the adjustment unit makes it easy to fix the equipment in a specific area for real-time measurement without the need for personnel to hold it, thereby improving convenience of use, and the position and angle of the data acquisition unit can be flexibly adjusted, thereby improving the flexibility of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the outer cover shell of the present invention; Figure 3 Schematic diagram of the structure of the regulating unit of the present invention; Figure 4 Schematic diagram of the system principle of the present invention.

[0014] In the figure: 100, control processing unit; 110, outer cover; 111, knob; 112, button; 113, power supply module; 120, PCB board; 130, data processing module; 140, data analysis module; 150, positioning module; 160, display screen; 170, sound and light alarm; 180, wireless communication module; 200, data acquisition unit; 300, adjustment unit; 310, bottom box; 311, limit slot; 320, mounting plate; 330, screw sleeve; 340, screw; 341, limit plate; 350, universal joint. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example 1 like Figure 1-4 FIG. 1 is a first embodiment of the present invention, which provides an intelligent leakage current measurement and early warning device, comprising: The control processing unit 100 includes an outer housing 110, a PCB board 120 disposed at the bottom of the inner cavity of the outer housing 110, a data processing module 130 disposed on top of the PCB board 120 and used to process measurement data, a data analysis module 140 disposed on top of the PCB board 120 and used to analyze and judge the measurement data, a positioning module 150 disposed on top of the PCB board 120 and used to sense position information, a display screen 160 disposed on top of the outer housing 110 and used to display measurement data, sound and light alarms 170 disposed on both sides of the outer housing 110 and used to issue sound and light alarms, and a wireless communication module 180 disposed on top of the PCB board 120 and convenient for transmitting measurement data to other devices; The data acquisition unit 200 includes a clamp head for clamping the conductor under test, a current transformer for measuring leakage current data of the conductor under test, and a trigger for controlling the opening and closing of the clamp head; The adjustment unit 300 includes a base box 310, a mounting plate 320 fixedly connected to the bottom of the base box 310, a screw sleeve 330 movably connected to one side of the base box 310 through a bearing, a screw rod 340 threadedly connected to the inner cavity of the screw sleeve 330, and a universal joint 350 connected to one end of the screw rod 340 and the other end of which is connected to the data acquisition unit 200.

[0017] like Figure 1-4As shown, by integrating the data processing module 130, the data analysis module 140 and the wireless communication module 180, the automatic collection, processing, analysis and remote transmission of data are realized, which reduces manual intervention and improves measurement efficiency and accuracy. Through the real-time analysis of the measurement data by the data analysis module 140, combined with the preset threshold judgment algorithm, the device can immediately trigger the sound and light alarm 170 when the leakage current exceeds the standard, and cooperate with the wireless communication module 180 to connect with the cloud server and the mobile phone terminal, realizing remote real-time early warning and data sharing, greatly improving the convenience of use, effectively avoiding the risk of missing important abnormal leakage current data information due to negligence or fatigue of personnel, and significantly improving the safety of the electrical system. The design of the mounting plate 320 in the node unit 300 makes it easy to fix the device in a specific area for real-time measurement without the need for personnel to hold it, which improves the safety and convenience of use and reduces personnel fatigue. The screw sleeve 330 rotates, which drives the screw 340 to move to one side. The screw 340 drives the universal joint 350 and the data acquisition unit 200 to move to one side, and then the position of the data acquisition unit 200 can be adjusted according to the distance from the wire. At the same time, the data acquisition unit 200 can be rotated, and the angle of the data acquisition unit 200 can be adjusted through the universal joint 350 to facilitate adaptation to wire measurements in different directions, thereby realizing flexible adjustment of the position and angle of the data acquisition unit 200 and improving the flexibility of equipment use.

[0018] Example 2 Reference Figure 1 、 2 and 4, which are the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0019] In this embodiment, a knob 111 for switching to different measurement modes and a button 112 for switching measurement functions are respectively provided on the top of the outer cover shell 110 , and a power supply module 113 is provided on one side of the inner cavity of the outer cover shell 110 .

[0020] The output end of the data acquisition unit 200 is connected to the input end of the data processing module 130 through the wireless communication module 180, the output end of the data processing module 130 is connected to the input end of the data analysis module 140, the output end of the data analysis module 140 is connected to the cloud server, the sound and light alarm 170 and the input end of the mobile phone through the wireless communication module 180, and the positioning module 150 is connected to the cloud service and the mobile phone through the wireless communication module 180. The wireless communication module 180 adopts the LoRa module with an operating frequency band of 433MHz and a transmission distance of ≥500m.

[0021] like Figure 1 、 2As shown in Figure 4, the power supply module 113 is used to power the device to facilitate its long-term operation. The knob 111 is intended to provide an intuitive and easy-to-operate way to switch between different measurement modes of the device to meet the user's measurement needs in different scenarios. By rotating the knob 111, the user can easily select a suitable measurement mode, such as continuous measurement, timed measurement or peak measurement, etc. The button 112 is used to switch the measurement function of the device, such as switching to current measurement, voltage measurement or resistance measurement, etc., thereby enhancing the versatility and applicability of the device. The connection between the data acquisition unit 200 and the wireless communication module 180 realizes real-time collection and wireless transmission of measurement data, thereby improving the flexibility and convenience of measurement. The data processing module 130 amplifies, filters, and performs analog-to-digital conversion on the collected raw data to ensure the accuracy and reliability of the data. The data analysis module 140 performs in-depth analysis on the processed data, such as threshold judgment, to provide a basis for early warning and decision-making of the equipment. The analyzed data is sent to the cloud server, sound and light alarm 170 and mobile phone terminal through the wireless communication module 180, realizing remote monitoring, real-time early warning and convenient viewing of data. Through the combination of the positioning module 150 and the wireless communication module 180, it is convenient to obtain the real-time location information of the equipment, and send it to the cloud server and mobile phone terminal through the wireless communication module 180, so that the user can understand the measurement position and status of the equipment at any time.

[0022] Example 3 Reference Figure 2-4 , which is the third embodiment of the present invention, is based on the first two embodiments.

[0023] In this embodiment, the data processing module 130 includes an amplifier for amplifying the measurement data signal, and the amplifier adopts LM124J, a filter for filtering the measurement data signal, and the filter is a low-pass filter, and an analog-to-digital converter for converting the measurement data signal into a digital signal.

[0024] The data analysis module 140 includes a data threshold discrimination algorithm, and its algorithm formula is: ,in, is the current leakage current value, It is a preset threshold. If the leakage current value is greater than the threshold, it is judged as abnormal.

[0025] One end of the screw 340 is located in the inner cavity of the bottom box 310 and is fixedly connected to the limiting plate 341. Limiting grooves 311 are provided on both sides of the inner cavity of the bottom box 310. Both ends of the limiting plate 341 extend to the inner cavity of the limiting groove 311 and are slidably connected to the inner cavity of the limiting groove 311.

[0026] like Figure 2-4As shown, the amplifier LM124J is used to enhance the strength of the measurement data signal and ensure the stability and accuracy of the signal in the subsequent processing process. The filter adopts a low-pass filter to filter out high-frequency noise and interference in the measurement data signal, retain useful low-frequency signals, and provide a clearer and more accurate signal for subsequent data analysis. The data threshold discrimination algorithm of the data analysis module 140 can set a preset threshold and compare the current leakage current value with the threshold in real time. The algorithm can quickly determine whether the leakage current is abnormal. The sliding connection between the limit slot 311 and the limit plate 341 limits the movement range of the screw 340 and the data acquisition unit 200, thereby ensuring the stability and reliability of the equipment during the adjustment process.

[0027] A method for using an intelligent leakage current measurement and early warning device, comprising the following steps: S1, firstly, a person takes the device and installs the device at the position of the conductor to be measured using the mounting plate 320, thereby alleviating the need for the person to hold the device for a long time when measuring leakage current in the later stage; S2. Then, by rotating the screw sleeve 330, since the screw sleeve 330 is threadedly connected to the screw rod 340, the screw sleeve 330 will drive the screw rod 340 to move to one side during the rotation process, and the screw rod 340 will drive the universal shaft 350 and the data acquisition unit 200 to move to one side, so that the position of the data acquisition unit 200 can be adjusted according to the distance from the wire. At the same time, the data acquisition unit 200 can be rotated, and the angle of the data acquisition unit 200 can be adjusted through the universal shaft 350, which is convenient for adapting to wire measurement in different directions, improving the convenience of use and measurement stability, and no need for personnel to hold hands during measurement, reducing personnel fatigue and improving usage safety; S3. When it is necessary to measure and monitor the leakage current of the conductor, the personnel can control the opening and closing of the clamp head by using the trigger to clamp the conductor in the circuit under test. At this time, the current transformer will use the principle of electromagnetic induction to measure the current passing through the conductor, collect the leakage current signal in the circuit, and convert it into an electrical signal for output; S4. The electrical signal is transmitted to the data processing module 130 via the wireless communication module 180. The amplifier in the data processing module 130 amplifies the output electrical signal to enhance its signal strength. At the same time, the filter removes high-frequency noise to make the signal purer. The processed analog electrical signal is then converted into a digital signal via an analog-to-digital converter for subsequent processing and analysis. S5. The data processing module 130 then transmits the processed digital signal data to the data analysis module 140. The data analysis module 140 extracts characteristic quantities related to the leakage current from the digital signal, such as the amplitude, frequency, and phase of the signal. These characteristic quantities will be used for subsequent leakage current determination. The extracted characteristic quantities are then compared with a preset threshold value using a threshold discrimination algorithm. If the characteristic quantity exceeds the threshold value, it is determined that the leakage current is abnormal. S6. When the leakage current is abnormal, the data analysis module 140 sends a signal to the sound and light alarm 170 through the wireless communication module 180, causing the sound and light alarm 170 to sound and light alarm, and at the same time sends leakage abnormality information to the cloud server and mobile phone terminal, and personnel can view the leakage current data through the cloud server or mobile phone terminal, so that personnel can timely understand the leakage abnormality of the wire. The cloud server will retrieve the position of the abnormal leakage wire located by the positioning module 150 through the wireless communication module 180, so that personnel can go there to cut off the power in time, thereby realizing automatic early warning. Personnel can receive the alarm in time and take corresponding measures to prevent the occurrence of safety accidents such as electrical fire or electric shock.

[0028] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent leakage current measurement and early warning device, characterized by: include, A control processing unit (100) comprises an outer housing (110), a PCB board (120) disposed at the bottom of an inner cavity of the outer housing (110), a data processing module (130) disposed on the top of the PCB board (120) and used for processing measurement data, a data analysis module (140) disposed on the top of the PCB board (120) and used for analyzing and judging the measurement data, a positioning module (150) disposed on the top of the PCB board (120) and used for sensing position information, a display screen (160) disposed on the top of the outer housing (110) and used for displaying measurement data, an audible and visual alarm (170) disposed on both sides of the outer housing (110) and used for emitting an audible and visual alarm, and a wireless communication module (180) disposed on the top of the PCB board (120) and convenient for transmitting the measurement data to other devices; A data acquisition unit (200) comprises a clamp head for clamping a conductor under test, a current transformer for measuring leakage current data of the conductor under test, and a trigger for controlling the opening and closing of the clamp head; The adjustment unit (300) comprises a bottom box (310), a mounting plate (320) fixedly connected to the bottom of the bottom box (310), a screw sleeve (330) movably connected to one side of the bottom box (310) via a bearing, a screw rod (340) threadedly connected to the inner cavity of the screw sleeve (330), and a universal shaft (350) connected to one end of the screw rod (340) and the other end of which is connected to the data acquisition unit (200).

2. The intelligent leakage current measurement and early warning device according to claim 1, characterized in that: A knob (111) for switching to different measurement modes and a key (112) for switching measurement functions are respectively provided on the top of the outer cover shell (110), and a power supply module (113) is provided on one side of the inner cavity of the outer cover shell (110).

3. The intelligent leakage current measurement and early warning device according to claim 1, characterized in that: The output end of the data acquisition unit (200) is connected to the input end of the data processing module (130) via the wireless communication module (180), the output end of the data processing module (130) is connected to the input end of the data analysis module (140), the output end of the data analysis module (140) is connected to the cloud server, the sound and light alarm (170) and the input end of the mobile phone via the wireless communication module (180), and the positioning module (150) is connected to the cloud server and the mobile phone via the wireless communication module (180).

4. The intelligent leakage current measurement and early warning device according to claim 1, characterized in that: The data processing module (130) comprises an amplifier for amplifying a measurement data signal, a filter for filtering the measurement data signal, and an analog-to-digital converter for converting the measurement data signal into a digital signal.

5. The intelligent leakage current measurement and early warning device according to claim 1, characterized in that: The data analysis module (140) includes a data threshold discrimination algorithm, and its algorithm formula is: ,in, is the current leakage current value, It is a preset threshold. If the leakage current value is greater than the threshold, it is judged as abnormal.

6. The intelligent leakage current measurement and early warning device according to claim 1, characterized in that: One end of the screw rod (340) is located in the inner cavity of the bottom box (310) and is fixedly connected to the limiting plate (341). Limiting grooves (311) are provided on both sides of the inner cavity of the bottom box (310). Both ends of the limiting plate (341) extend into the inner cavity of the limiting groove (311) and are slidably connected to the inner cavity of the limiting groove (311).

7. A method for using the intelligent leakage current measurement and early warning device according to any one of claims 1 to 6, characterized in that: S1. First, a person takes the device and installs the device at the position of the conductor to be measured through the installation plate (320), thereby alleviating the situation where the person needs to hold the device for a long time when measuring the leakage current in the later stage; S2. Then, the screw sleeve (330) is rotated. Since the screw sleeve (330) is threadedly connected to the screw rod (340), the screw sleeve (330) drives the screw rod (340) to move to one side during rotation. The screw rod (340) drives the universal shaft (350) and the data acquisition unit (200) to move to one side, thereby adjusting the position of the data acquisition unit (200) according to the distance from the wire. At the same time, the data acquisition unit (200) can be rotated. The angle of the data acquisition unit (200) can be adjusted through the universal shaft (350), which is convenient for adapting to wire measurement in different directions, improving the convenience of use and the measurement stability, and no need for personnel to hold the device during measurement, thereby reducing personnel fatigue and improving the safety of use; S3. When it is necessary to measure and monitor the leakage current of the conductor, the personnel can control the opening and closing of the clamp head by using the trigger to clamp the conductor in the circuit under test. At this time, the current transformer will use the principle of electromagnetic induction to measure the current passing through the conductor, collect the leakage current signal in the circuit, and convert it into an electrical signal for output; S4, the electrical signal is transmitted to the data processing module (130) through the wireless communication module (180), the amplifier in the data processing module (130) amplifies the output electrical signal to enhance its signal strength, and the filter removes high-frequency noise to make the signal purer, and then the processed analog electrical signal is converted into a digital signal through the analog-to-digital converter for subsequent processing and analysis; S5, the data processing module (130) then transmits the processed digital signal data to the data analysis module (140), and the data analysis module (140) extracts characteristic quantities related to the leakage current from the digital signal, such as the amplitude, frequency, phase, etc. of the signal. These characteristic quantities will be used for subsequent leakage current judgment, and then a threshold discrimination algorithm is used to compare the extracted characteristic quantities with a preset threshold value. If the characteristic quantity exceeds the threshold value, it is judged that the leakage current is abnormal; S6. When the leakage current is abnormal, the data analysis module (140) sends a signal to the sound and light alarm (170) through the wireless communication module (180), so that the sound and light alarm (170) performs a sound and light alarm. At the same time, the leakage abnormality information is sent to the cloud server and the mobile phone terminal, and the personnel can view the leakage current data through the cloud server or the mobile phone terminal, so that the personnel can timely understand the abnormal leakage of the wire. The cloud server will retrieve the position of the abnormal leakage wire located by the positioning module (150) through the wireless communication module (180), so that the personnel can go there to cut off the power in time, thereby realizing automatic early warning. The personnel can receive the alarm in time and take corresponding measures to prevent the occurrence of safety accidents such as electrical fire or electric shock.

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