A monitoring and alarming device for grounding of secondary terminals of instrument transformers

Abstract

The present invention relates to the field of electric power technology, and discloses a transformer secondary terminal grounding monitoring and alarm device. The device of the present invention includes a wireless monitor, a switch-type magnetic fixer, a universal lever, and a photosensitive grounding terminal reminder; the wireless monitor includes a camera module connected to a preset APP, an image recognition processing module, and a control module for controlling the camera module to collect wiring image information; the photosensitive grounding terminal reminder includes a reminder body and a photosensitive alarm module; the photosensitive alarm module sends an alarm message to the image recognition processing module when detecting that the secondary panel cover is closed; the image recognition processing module retrieves the corresponding wiring image according to the alarm message for identification to determine whether the transformer secondary terminal has been restored to ground, and prompts the photosensitive alarm module to emit a preset alarm sound if it has not been restored. The present invention does not have the problem of easy knotting and difficult sorting of the connector, and realizes the automatic detection of the forgotten restoration of grounding of the transformer secondary terminal, and has a high degree of intelligence.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular, to a monitoring and alarming device for the grounding of secondary terminals of a mutual inductor. Background Art

[0002] The mutual inductor is a key device for preventive tests. Dielectric loss and capacitance tests can effectively detect defects such as moisture ingress and deterioration of the insulation of the mutual inductor. The outermost screen at the end of the mutual inductor must be reliably grounded during operation. However, the dielectric loss and capacitance tests must remove the grounding of the secondary terminal of the mutual inductor's screen at the end to be carried out. This necessary operation will have the safety risk of forgetting to restore the grounding of the secondary terminal after the test work is completed.

[0003] To remind operators to avoid omitting the restoration of the grounding of the secondary terminal after the preventive test, the applicant provides a device for preventing forgetting to restore the grounding of the secondary terminal of a mutual inductor (patent application number: 202110333920.5). The device includes a fixer, a wireless monitor, a connection terminal part, a first connecting part, and a second connecting part; the connection terminal part is connected to the fixer through the first connecting part and is used to be fixed on the disassembled secondary terminal to play a reminder role; the wireless monitor is connected to the fixer through the second connecting part with an adjustable monitoring angle and is used to collect wiring image information. The working method is as follows: After the on-site tester disassembles the grounding of the mutual inductor's screen at the end, fix the fixer above the secondary panel, and fix the connection terminal part on the secondary terminal, which can timely remind to avoid omitting the restoration of the grounding of the secondary terminal after the preventive test. Then bend the wireless monitor to a suitable monitoring angle position so that it can monitor the entire secondary panel, and the work supervisor can remotely connect to the wireless monitor through an intelligent terminal such as a mobile phone, and can timely and clearly check the wiring situation of the test line and the restoration wiring situation, without repeatedly climbing the ladder, and can also timely take pictures and keep records of the conditions before and after the restoration of the wiring remotely, which is convenient for subsequent work records.

[0004] However, in this solution, the connection terminal needs to be connected to the fixer through the first connecting part, and the wireless monitor needs to be connected to the fixer through the second connecting part, which has the problems of easy knotting and difficult arrangement of the connecting parts. In terms of the reminder method, this solution reminds to avoid omitting the restoration of the grounding of the secondary terminal after the preventive test by fixing the connection terminal part on the secondary terminal or further adding a timing reminder device. This reminder method requires the on-site tester to visually check whether the secondary terminal is grounded and cannot automatically detect whether the secondary terminal is grounded, with a low degree of intelligence. Summary of the Invention

[0005] The present invention provides a monitoring and alarming device for the grounding of secondary terminals of a mutual inductor, which solves the technical problems of the existing solution for preventing forgetting to restore the grounding of secondary terminals of a mutual inductor having a low degree of intelligence and the defects of easy knotting and difficult arrangement of the connecting parts.

[0006] The present invention provides a monitoring and alarming device for the grounding of secondary terminals of a transformer, which includes a wireless monitor and a switch-type magnetic fixator. The device further includes a universal lever and a photosensitive grounding terminal reminder;

[0007] The wireless monitor is connected to the switch-type magnetic fixator through the universal lever with an adjustable monitoring angle. The wireless monitor includes a camera module, an image recognition and processing module, and a control module. The camera module is connected to the image recognition and processing module, the control module, and a preset APP;

[0008] The photosensitive grounding terminal reminder is used to be fixed inside the secondary panel cover. It includes a reminder body and a photosensitive alarm module. The photosensitive alarm module is connected to the image recognition and processing module;

[0009] The control module is used to control the camera module to collect wiring image information. The photosensitive alarm module is used to send a first alarm message to the image recognition and processing module when it detects that the secondary panel cover is closed. The image recognition and processing module is used to retrieve the wiring images within a corresponding time range when receiving the first alarm message, identify the retrieved wiring images to determine whether the secondary terminals of the transformer are restored to grounding, and send a feedback message to the photosensitive alarm module when it is determined that the grounding is not restored, so that the photosensitive alarm module emits a preset alarm sound according to the feedback message.

[0010] According to an implementable manner of the present invention, the control module includes a first touch unit and a first control unit connected to each other;

[0011] The first control unit is used to control the camera module to collect primary wiring image information when the first touch unit detects a touch signal.

[0012] According to an implementable manner of the present invention, the control module includes a second touch unit and a second control unit connected to each other;

[0013] The second control unit is used to control the camera module to collect wiring image information in real time at a preset frequency when the second touch unit detects a touch signal.

[0014] According to an implementable manner of the present invention, the photosensitive alarm module is also connected to the preset APP;

[0015] The photosensitive alarm module is also used to send a second alarm message to the preset APP when receiving the feedback message.

[0016] According to an implementable manner of the present invention, the photosensitive alarm module includes a photosensitive resistor unit, an alarm unit, and a wireless communication unit connected in sequence; the alarm unit is connected to the image recognition processing module and the preset APP through the wireless communication unit.

[0017] According to an implementable manner of the present invention, the image recognition processing module is also connected to the control module;

[0018] The image recognition processing module is also used to send a capture signal to the control module when it is determined that the grounding has not been restored; the control module is also used to control the camera module to collect wiring image information according to the capture signal.

[0019] According to an implementable manner of the present invention, the photosensitive grounding terminal reminder further includes a positioning module, and the positioning module is connected to the control module;

[0020] The photosensitive grounding terminal reminder is specifically used to be fixed on the secondary terminal of the current transformer, and the positioning module is used to obtain the location information and send it to the control module;

[0021] The control module is also used to adjust the shooting angle of the camera module according to the location information so that the lens of the camera module faces the secondary terminal of the current transformer.

[0022] According to an implementable manner of the present invention, the photosensitive grounding terminal reminder further includes a battery module for supplying power to the photosensitive alarm module. A USB charging port is provided on the reminder body, and the USB charging port is electrically connected to the battery.

[0023] According to an implementable manner of the present invention, the photosensitive grounding terminal reminder has a clip-like structure.

[0024] According to an implementable manner of the present invention, the wireless monitor further includes a light control module and a lamp connected in sequence;

[0025] The light control module is used to detect the light intensity and control the lamp to turn on when the detected light intensity value is lower than the preset light intensity threshold.

[0026] It can be seen from the above technical solutions that the present invention has the following advantages:

[0027] The device of the present invention includes a wireless monitor, a switch-type magnetic fixator, a universal lever, and a photosensitive grounding terminal reminder; the wireless monitor is connected to the switch-type magnetic fixator through the universal lever with an adjustable monitoring angle. The wireless monitor includes a camera module, an image recognition and processing module, and a control module. The camera module is connected to a preset APP; the photosensitive grounding terminal reminder is used to be fixed inside the secondary panel cover, and it includes a reminder body and a photosensitive alarm module; the control module is used to control the camera module to collect wiring image information; the photosensitive alarm module is used to send a first alarm message to the image recognition and processing module when it detects that the secondary panel cover is closed; the image recognition and processing module is used to retrieve the wiring image within the corresponding time range when receiving the first alarm message, identify the retrieved wiring image to determine whether the secondary terminal of the transformer has been restored to ground, and send a feedback message to the photosensitive alarm module when it is determined that the grounding has not been restored, so that the photosensitive alarm module emits a preset alarm sound; the present invention does not require connecting the photosensitive grounding terminal reminder with a connecting piece, and connects the wireless monitor and the switch-type magnetic fixator through a universal lever, which can avoid the problems of easy knotting and difficult arrangement caused by the connecting piece; by setting the photosensitive grounding terminal reminder, replacing the original "visual inspection reminder method", using "whether the environment is dark" as one of the criteria for determining whether to issue an alarm reminder, combined with the image recognition and processing module, when the secondary panel cover is closed, the photosensitive grounding terminal reminder will detect and prompt the image recognition and processing module to judge whether the secondary terminal of the transformer has been restored to ground through the nearest historical wiring image, and when it is determined that the grounding has not been restored, prompt the photosensitive alarm module to emit a preset alarm sound, realizing the automatic detection of the forgotten restoration of the secondary terminal of the transformer, with a high degree of intelligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a structural connection block diagram of a monitoring and alarm device for the grounding of the secondary terminal of a transformer provided by an optional embodiment of the present invention;

[0030] Figure 2 It is a structural schematic diagram of a wireless monitor connected to a switch-type magnet fixator through a universal lever provided by an optional embodiment of the present invention;

[0031] Figure 3 It is a structural connection block diagram of a control module provided by an optional embodiment of the present invention;

[0032] Figure 4 The structural connection block diagram of the control module provided by another optional embodiment of the present invention;

[0033] Figure 5 The structural connection block diagram of the photosensitive alarm module provided by an optional embodiment of the present invention;

[0034] Figure 6 The structural schematic diagram of the photosensitive grounding terminal reminder provided by an optional embodiment of the present invention.

[0035] Reference numerals:

[0036] 1 - Wireless monitor; 2 - Switch-type magnetic fixator; 3 - Universal lever; 4 - Photosensitive grounding terminal reminder; 11 - Camera module; 12 - Image recognition and processing module; 13 - Control module; 41 - Reminder body; 42 - Photosensitive alarm module; 131 - First touch unit; 132 - First control unit; 133 - Second touch unit; 134 - Second control unit; 421 - Photosensitive resistor unit; 422 - Alarm unit; 433 - Wireless communication unit. Detailed implementation manners

[0037] The embodiment of the present invention provides a monitoring and alarm device for the grounding of the secondary terminal of a current transformer, which is used to solve the technical problems that the existing anti-forgetting and recovery grounding scheme for the secondary terminal of a current transformer has a low degree of intelligence and there are defects such as easy knotting and difficult arrangement of connecting parts.

[0038] In order to make the object, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] In the description of the embodiments of the present application, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a replaceable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0041] The present invention provides a monitoring and alarming device for the grounding of secondary terminals of an instrument transformer.

[0042] Please refer to Figure 1 , Figure 1 which shows a structural connection block diagram of a monitoring and alarming device for the grounding of secondary terminals of an instrument transformer provided by an embodiment of the present invention.

[0043] A monitoring and alarming device for the grounding of secondary terminals of an instrument transformer provided by an embodiment of the present invention includes a wireless monitor 1, a switch-type magnetic fixator 2, a universal lever 3, and a photosensitive grounding terminal reminder 4.

[0044] The wireless monitor 1 is connected to the switch-type magnetic fixator 2 through the universal lever 3 with an adjustable monitoring angle; the wireless monitor 1 includes a camera module 11, an image recognition and processing module 12, and a control module 13, and the camera module 11 is connected to the image recognition and processing module 12, the control module 13, and a preset APP;

[0045] The photosensitive grounding terminal reminder 4 is used to be fixed inside the secondary panel cover, and it includes a reminder body 41 and a photosensitive alarm module 42, and the photosensitive alarm module 42 is connected to the image recognition and processing module 12;

[0046] The control module 13 is used to control the camera module 11 to collect wiring image information; the photosensitive alarm module 42 is used to send a first alarm message to the image recognition and processing module 12 when detecting that the secondary panel cover is closed; the image recognition and processing module 12 is used to retrieve the wiring image within the corresponding time range when receiving the first alarm message, identify the retrieved wiring image to determine whether the secondary terminal of the instrument transformer has been restored to grounding, and send a feedback message to the photosensitive alarm module 42 when it is determined that the grounding has not been restored, so that the photosensitive alarm module 42 emits a preset alarm sound according to the feedback message.

[0047] The working method is as follows:

[0048] Field test personnel remotely connect the camera module 11 through a pre-installed APP in intelligent terminals such as mobile phones. After the field test personnel disconnect the grounding of the secondary terminal screen of the mutual inductor, the switch-type magnetic fixator 2 is fixed above the secondary panel, and the photosensitive grounding terminal reminder 4 is fixed inside the secondary panel cover. The camera module 11 is adjusted to a suitable monitoring angle position by operating the universal lever 3. When the field test personnel close the secondary panel cover, since the photosensitive alarm-type grounding terminal reminder will be in a dark environment after the secondary panel is closed, and it detects that it is in a dark environment (that is, detects that the secondary panel cover is closed), it will send an alarm message to the image recognition and processing module 12. If the image recognition and processing module 12 recognizes that the secondary terminal is not restored to the grounded state, at this time, it will prompt the photosensitive alarm module 42 to emit a preset alarm sound, thereby reminding the field test personnel to avoid omitting the restoration of the secondary terminal grounding at the end of the preventive test. The person in charge of the work can obtain the image information collected by the camera module 11 through the pre-installed APP, so as to be able to check the wiring condition of the test line and the restored wiring condition in a timely and clear manner without repeatedly climbing the ladder. The person in charge of the work can also upload the conditions before and after the disconnection and restoration of the wiring to the maintenance and repair module of the power grid management platform through the pre-installed APP, and record them in the system in a timely manner for filing.

[0049] As can be seen from the above technical solution, the present invention does not require a connecting member to connect the photosensitive grounding terminal reminder 4, and connects the wireless monitor 1 and the switch-type magnetic fixator 2 through the universal lever 3, which can avoid the problems of easy knotting and difficult arrangement caused by the connecting member; by setting the photosensitive grounding terminal reminder 4 and the image recognition and processing module 12, when the secondary panel cover is closed, the photosensitive grounding terminal reminder 4 will detect and prompt the image recognition and processing module 12 to judge whether the secondary terminal of the mutual inductor is restored to the grounded state through the nearest historical wiring image. When it is determined that the grounding is not restored, the photosensitive alarm module 42 is prompted to emit a preset alarm sound, realizing the automatic detection of the forgotten restoration of the secondary terminal of the mutual inductor, with a high degree of intelligence.

[0050] The structure of the wireless monitor 1 connected to the switch-type magnet fixator through the universal lever 3 is as Figure 2 shown. The switch-type magnet fixator is in the shape of a cuboid. The switch-type magnet fixator is fixed above the secondary panel by means of magnetic adsorption. Among them, when the switch is placed in the ON position, the base of the switch-type magnet fixator generates magnetism, and when the switch is placed in the OFF position, the base of the switch-type magnet fixator eliminates magnetism.

[0051] As a specific implementation manner, the magnet material of the switch-type magnet fixator is ferrite. The switch-type magnet fixator is 60 mm long, 50 mm wide, and 55 mm high, and the outer layer is wrapped with an epoxy resin insulating material.

[0052] Among them, the wiring image within the corresponding time range is the wiring image collected by the camera module 11 before the image recognition processing module 12 receives the first alarm message.

[0053] As a specific implementation manner, the wiring image within the corresponding time range is the wiring image collected by the camera module 11 during the period from when the camera module 11 starts shooting to when the image recognition processing module 12 receives the first alarm message.

[0054] In a realizable manner, as Figure 3 shown, the control module 13 includes a connected first touch unit 131 and a first control unit 132;

[0055] The first control unit 132 is used to control the camera module 11 to collect a piece of wiring image information when the first touch unit 131 detects a touch signal.

[0056] Specifically, the first touch unit 131 includes a touch screen or a touch button. When the touch screen senses that the corresponding touch frame is touched or the touch button is pressed, a touch signal is detected.

[0057] The working method is as follows:

[0058] Before the on-site test personnel disconnect the secondary terminal wiring, they operate the first touch unit 131, so that the first control unit 132 controls the camera module 11 to collect the wiring image before the secondary terminal wiring is disconnected; after the on-site test personnel disconnect the secondary terminal wiring, they operate the first touch unit 131, so that the first control unit 132 controls the camera module 11 to collect the wiring image after the secondary terminal wiring is disconnected.

[0059] It should be noted that the on-site test personnel can also operate the first touch unit 131 at any time before and after disconnecting the secondary terminal wiring according to actual needs.

[0060] In the embodiment of the present invention, a function of manually capturing the wiring condition of the secondary terminal before disconnection and after reconnecting the wiring is provided. The manual capture of the wiring condition of the secondary terminal is realized through the first touch unit 131 and the first control unit 132, which is easy to operate.

[0061] In a realizable manner, as Figure 4 shown, the control module 13 includes a connected second touch unit 133 and a second control unit 134;

[0062] The second control unit 134 is used to control the camera module 11 to collect wiring image information in real time at a preset frequency when the second touch unit 133 detects a touch signal.

[0063] The working method is as follows:

[0064] Before the on-site test personnel disconnect the secondary terminal, they operate the second touch unit 133, so that the second control unit 134 controls the camera module 11 to collect the wiring image before disconnecting the secondary terminal in real time according to a preset frequency.

[0065] Among them, the preset frequency can be set according to the actual situation.

[0066] Furthermore, corresponding program information can be set in the second control unit 134 to make the second control unit 134 control the camera module 11 to stop working. For example, a collection time threshold of the wiring image information can be set. When the total collection time of the wiring image information collected by the camera module 11 in real time according to the preset frequency reaches the collection time threshold, the second control unit 134 controls the camera module 11 to stop working. For another example, when receiving the touch signal detected by the second touch unit 133 for the second time, the camera module 11 is controlled to stop working.

[0067] In the above embodiments of the present invention, a function of automatically capturing the wiring condition of the secondary terminal before disconnecting and after restoring the wiring is provided, further improving the intelligence level of the device.

[0068] It should be noted that the control module 13 may include a first touch unit 131, a first control unit 132, a second touch unit 133 and a second control unit 134, so that the function of automatic capture and the function of manual capture coexist.

[0069] In a realizable manner, the photosensitive alarm module 42 is also connected to the preset APP;

[0070] The photosensitive alarm module 42 is further configured to send a second alarm message to the preset APP when receiving the feedback information.

[0071] In the embodiments of the present invention, by sending the second alarm message to the preset APP, the person in charge of the work can timely learn about the situation that the on-site test personnel forget to restore the grounding, providing data support for subsequent assessment and training of the on-site test personnel.

[0072] The embodiments of the present invention can replace the existing "visual reminder method" and realize the dual reminder of "sound + information".

[0073] In a realizable manner, as Figure 5 shown, the photosensitive alarm module 42 includes a photosensitive resistor unit 421, an alarm unit 422 and a wireless communication unit 433 connected in sequence; the alarm unit 422 is connected to the image recognition processing module 12 and the preset APP through the wireless communication unit 433.

[0074] Among them, the photoresistor unit 421 is used to send a signal to the alarm unit 422 when detecting a dark environment, and the alarm unit 422 is used to implement the above-mentioned various alarm functions of the present invention.

[0075] As a specific implementation manner, the wireless communication unit 433 is connected to the image recognition processing module 12 and the preset APP by using Bluetooth communication. The tester can remotely connect to the grounding monitoring and alarm device through the preset APP in the mobile phone, so as to efficiently check the wiring condition during the test.

[0076] In a realizable manner, the image recognition processing module 12 is further connected to the control module 13;

[0077] The image recognition processing module 12 is further used to send a capture signal to the control module 13 when it is determined that the grounding has not been restored; the control module 13 is further used to control the camera module 11 to collect wiring image information according to the capture signal.

[0078] In the above embodiments of the present invention, a function of automatically capturing the secondary terminal wiring condition when forgetting to restore the wiring is provided, which further improves the intelligence level of the device. After capturing the picture, it can be sent to the preset APP in binary form. The preset APP can automatically save the picture and have alarm information warnings (including alarm time, duration, etc.), and the historical alarms can be viewed and cleared through the preset APP. The person in charge of the work can obtain the automatically captured wiring image through the preset APP, so as to timely understand the situation that the on-site tester forgets to restore the grounding, and provide data support for the subsequent assessment and training of the on-site tester.

[0079] In a realizable manner, the photoresistive grounding terminal reminder 4 further includes a positioning module, and the positioning module is connected to the control module 13;

[0080] The photoresistive grounding terminal reminder 4 is specifically used to be fixed on the secondary terminal of the mutual inductor, and the positioning module is used to obtain the location information and send it to the control module 13;

[0081] The control module 13 is further used to adjust the shooting angle of the camera module 11 according to the location information, so that the lens of the camera module 11 faces the secondary terminal of the mutual inductor.

[0082] As a specific implementation manner, the camera module 11 includes a camera, and the camera can be set to be lifted and rotated. The control module 13 can adjust the shooting angle of the lens according to the location information, so that the camera can capture the monitoring area corresponding to the location information.

[0083] It should be noted that adjusting the shooting angle of the lens according to the position information belongs to the prior art, and the control module 13 can adjust the shooting angle of the lens according to the position information through the prior art. The embodiments of the present invention do not make any limitations in this regard.

[0084] In the above embodiments of the present invention, the position of the photosensitive grounding terminal reminder 4 can be automatically recognized, and the best shooting angle can be automatically adjusted according to the position, improving the intelligence level and shooting effect of the device.

[0085] In an implementable manner, the photosensitive grounding terminal reminder 4 further includes a battery module for supplying power to the photosensitive alarm module 42. A USB charging port is provided on the reminder body 41, and the USB charging port is electrically connected to the battery.

[0086] In the embodiments of the present invention, the photosensitive grounding terminal reminder 4 can be charged through the USB charging port.

[0087] In an implementable manner, as Figure 6 shown, the photosensitive grounding terminal reminder 4 is in a clip-like structure.

[0088] In the embodiments of the present invention, by setting the photosensitive grounding terminal reminder 4 in a clip-like structure,

[0089] It should be noted that in addition to being fixed inside and outside the secondary panel cover in the form of a clip, the photosensitive grounding terminal reminder 4 can also be fixed inside the secondary panel cover in the form of a binding rope, a hoop, etc.

[0090] In an implementable manner, the wireless monitor 1 further includes a light control module and a lamp connected in sequence;

[0091] The light control module is used to detect the light intensity and control the lamp to turn on when the detected light intensity value is lower than the preset light intensity threshold.

[0092] The embodiments of the present invention provide the function of lighting at night, which is convenient for testers to work at night and improves work safety and convenience.

[0093] In the above embodiments of the present invention, the designed mutual inductor secondary terminal grounding monitoring and alarming device has strong versatility and is also applicable to preventive tests such as dry CT, oil CT, transformers, etc. that involve the need to disconnect the screen grounding wire.

[0094] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A secondary terminal grounding monitoring and alarming device for an instrument transformer, comprising a wireless monitor and a switch-type magnetic fixator, characterized in that, The device further includes a universal lever and a photosensitive grounding terminal reminder; The wireless monitor is connected to the switch-type magnetic fixer through the universal lever with adjustable monitoring angle; the wireless monitor includes a camera module, an image recognition and processing module, and a control module, and the camera module is connected to the image recognition and processing module, the control module, and a preset APP; The photosensitive grounding terminal reminder is used to be fixed inside the secondary panel cover, and it includes a reminder body and a photosensitive alarm module, and the photosensitive alarm module is connected to the image recognition and processing module; The control module is used to control the camera module to collect wiring image information; the photosensitive alarm module is used to send a first alarm message to the image recognition and processing module when it detects that the secondary panel cover is closed; the image recognition and processing module is used to retrieve the wiring images within the corresponding time range when receiving the first alarm message, identify the retrieved wiring images to determine whether the secondary terminal of the transformer is restored to ground, and send a feedback message to the photosensitive alarm module when it is determined that the ground is not restored, so that the photosensitive alarm module emits a preset alarm sound according to the feedback message; The wiring images within the corresponding time range are the wiring images collected by the camera module before the image recognition and processing module receives the first alarm message.

2. The secondary terminal grounding monitoring and alarming device for the mutual inductor according to claim 1, characterized in that The control module includes a first touch unit and a first control unit connected to each other; The first control unit is used to control the camera module to collect primary wiring image information when the first touch unit detects a touch signal.

3. The secondary terminal grounding monitoring and alarming device for current transformers according to claim 1, characterized in that, The control module includes a second touch unit and a second control unit connected to each other; The second control unit is used to control the camera module to collect wiring image information in real time at a preset frequency when the second touch unit detects a touch signal.

4. The secondary terminal grounding monitoring and alarming device for instrument transformers according to claim 1, characterized in that, The photosensitive alarm module is also connected to the preset APP; The photosensitive alarm module is also used to send a second alarm message to the preset APP when receiving the feedback message.

5. The secondary terminal grounding monitoring and alarming device for current transformers according to claim 4, wherein, The photosensitive alarm module includes a photosensitive resistor unit, an alarm unit, and a wireless communication unit connected in sequence; the alarm unit is connected to the image recognition and processing module and the preset APP through the wireless communication unit.

6. The grounding monitoring and alarming device for the secondary terminal of the mutual inductor according to claim 1, characterized in that, The image recognition and processing module is also connected to the control module; The image recognition and processing module is also used to send a capture signal to the control module when it is determined that the ground is not restored; the control module is also used to control the camera module to collect wiring image information according to the capture signal.

7. The grounding monitoring and alarming device for the secondary terminal of the mutual inductor according to claim 1, wherein The photosensitive grounding terminal reminder further includes a positioning module, and the positioning module is connected to the control module; The photosensitive grounding terminal reminder is specifically used to be fixed on the secondary terminal of the transformer, and the positioning module is used to obtain the location information where it is located and send it to the control module; The control module is also used to adjust the shooting angle of the camera module according to the location information, so that the lens of the camera module faces the secondary terminal of the transformer.

8. The secondary terminal grounding monitoring and alarming device for current transformers according to claim 1, characterized in that The photosensitive grounding terminal reminder further includes a battery module for supplying power to the photosensitive alarm module. A USB charging port is provided on the reminder body, and the USB charging port is electrically connected to the battery.

9. The secondary terminal grounding monitoring and alarming device for the mutual inductor according to claim 1, characterized in that The photosensitive grounding terminal reminder is in a clip-like structure.

10. The grounding monitoring and alarming device for the secondary terminal of the mutual inductor according to any one of claims 1-9, characterized in that, The wireless monitor further includes a light control module and a lamp connected in sequence. The light control module is used to detect the light intensity and control the lamp to turn on when the detected light intensity value is lower than the preset light intensity threshold.

Images