Monitoring device for switch cabinet

Abstract

The utility model relates to the technical field of switch cabinets, and discloses a monitoring device for a switch cabinet, which can realize quick disassembly and assembly, can prevent theft and improves the reliability. The device comprises a monitoring host module, a plurality of composite acquisition modules and a plurality of electromagnets. Wherein a plurality of slots are formed in the inner side edges, corresponding to the notches, of the cabinet body or the wall body, and when the monitoring host module is embedded in the cabinet body or the wall body, the armature of each electromagnet can be inserted into or away from the corresponding slot. According to the utility model, the installation depth, the clamping force and the real-time temperature change of the corresponding contact can be confirmed, and the related collected data can be directly displayed and recorded on the monitoring host module, so that the real-time state of the contact can be monitored; the monitoring host module can be conveniently fixed at a corresponding position by utilizing the electromagnet and the corresponding slot, the anti-theft performance can be improved, the monitoring host module is prevented from being easily disassembled, and when the monitoring host module needs to be disassembled, the monitoring host module can be directly taken out by controlling the electromagnet to be electrified to be separated from the slot opening, so that the disassembly is convenient. And the convenience and safety of disassembly and assembly are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, and in particular to a monitoring device for switchgear. Background Technology

[0002] High-voltage disconnect switches are an important component of power transmission and transformation systems and are the most widely used primary equipment in the power grid. Real-time monitoring of the clamping force and depth of the switch body contacts, as well as the temperature at the contact points of the contacts, plays a vital role in improving power grid operation efficiency, reducing the workload of personnel inspections, and improving operational accuracy.

[0003] In the existing technology, the monitoring device needs to be equipped with a monitoring host module to collect and display relevant data and status of multiple collection points. However, the existing monitoring host modules have installation defects, are difficult to disassemble and repair, and are often stolen, resulting in low reliability. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a monitoring device for switchgear, which enables rapid assembly and disassembly, prevents theft, and improves reliability.

[0005] The monitoring device for switchgear according to an embodiment of the present invention includes:

[0006] The monitoring host module is installed in a cabinet or on a wall;

[0007] Several composite acquisition modules are installed on the corresponding contacts to collect data on the insertion depth, clamping force and temperature of the corresponding contacts in real time, and are electrically connected to the monitoring host module.

[0008] Several electromagnets are arranged along the sidewall of the monitoring host module and are electrically connected to the monitoring host module.

[0009] The cabinet or wall has several slots on the inner edge of the corresponding slot. When the monitoring host module is embedded in the cabinet or wall, the armature of each electromagnet can be inserted into or moved away from the corresponding slot.

[0010] According to some embodiments of the present invention, a lighting module is also provided on the side wall of the monitoring host module.

[0011] According to some embodiments of the present invention, the lighting module includes:

[0012] First energy storage circuit;

[0013] LED light units are located around the monitoring host module;

[0014] A control switch is electrically connected between the first energy storage circuit and the LED lamp unit, and is located on the front of the monitoring host module.

[0015] According to some embodiments of this utility model, the monitoring host module includes:

[0016] A main unit housing, with several electromagnets respectively disposed around the periphery of the main unit housing;

[0017] The first control circuit is located inside the main unit housing;

[0018] The display screen is embedded in the front of the main unit housing and is electrically connected to the first control circuit;

[0019] The first wireless circuit is located inside the main unit housing and is electrically connected to the first control circuit and the composite acquisition module, respectively.

[0020] A switching circuit is located inside the main unit housing and is electrically connected to the first control circuit and several electromagnets respectively.

[0021] The first power supply circuit is located inside the main unit housing and is electrically connected to the first control circuit, the display screen, the first wireless circuit, and the switch switching circuit.

[0022] According to some embodiments of the present invention, the first power supply circuit is a power supply circuit, the input terminal of the power supply circuit is electrically connected to the mains power, and the output terminal of the power supply circuit is electrically connected to the first control circuit, the display screen, the first wireless circuit and the switch switching circuit respectively.

[0023] According to some embodiments of the present invention, the first power supply circuit further includes a battery, which is electrically connected to the first control circuit, the display screen, the first wireless circuit, and the switch switching circuit.

[0024] According to some embodiments of this utility model, the composite acquisition module includes:

[0025] The annular housing has a snap-fit ​​mechanism on its inner wall for locking the contacts.

[0026] A power-collecting unit is disposed on the annular housing;

[0027] A data acquisition and communication unit is disposed on the annular housing and electrically connected to the power acquisition unit;

[0028] A depth sensor is disposed on the inner wall edge of the annular housing and is electrically connected to the acquisition and communication unit;

[0029] A temperature sensor is located on the inner edge of the annular housing and is electrically connected to the data acquisition and communication unit.

[0030] A pressure sensor is located on the inner wall edge of the annular housing and is electrically connected to the data acquisition and communication unit.

[0031] According to some embodiments of the present invention, the power extraction unit includes:

[0032] A current-collecting ring is fixed to the outside of the annular housing;

[0033] An energy harvesting coil is disposed on the power harvesting ring and electrically connected to the power harvesting ring;

[0034] A bridge rectifier circuit, with its input terminal electrically connected to the energy harvesting coil;

[0035] The second energy storage circuit has its input terminal electrically connected to the output terminal of the bridge rectifier circuit;

[0036] The input terminal of the voltage regulator circuit is electrically connected to the output terminal of the second energy storage circuit.

[0037] According to some embodiments of the present invention, the power extraction unit further includes an energy extraction circuit board disposed within the annular housing, wherein the bridge rectifier circuit, the second energy storage circuit, and the voltage regulator circuit are integrated on the energy extraction circuit board.

[0038] According to some embodiments of this utility model, the data acquisition and communication unit includes:

[0039] The second power supply circuit has its input terminal electrically connected to the output terminal of the power extraction unit.

[0040] The second control circuit is electrically connected to the second power supply circuit;

[0041] The second wireless circuit is electrically connected to the second control circuit;

[0042] The signal acquisition circuit has three acquisition terminals that are electrically connected to the corresponding depth sensor, temperature sensor, and pressure sensor, respectively, and the output terminal of the signal acquisition circuit is electrically connected to the second control circuit.

[0043] The present invention has at least the following beneficial effects: Several composite acquisition modules are fixed to the corresponding contacts of the switch cabinet. Through wireless connection, data can be transmitted with the monitoring host module, thereby confirming the installation depth, clamping force, and real-time temperature changes of the corresponding contacts. The relevant acquisition data can be directly displayed and recorded on the monitoring host module, thus enabling real-time monitoring of the contact status. Furthermore, the use of electromagnets and corresponding slots facilitates the fixing of the monitoring host module in the corresponding position and enhances anti-theft capabilities, preventing the monitoring host module from being easily disassembled. When disassembly is required, the monitoring host module can be directly removed by controlling the electromagnet to energize and disengage from the slot, effectively improving the convenience and safety of disassembly and assembly.

[0044] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0045] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0046] Fig. 1 This is a schematic diagram of the monitoring host module of the monitoring device for switch cabinet according to an embodiment of the present utility model;

[0047] Fig. 2 for Fig. 1 A schematic diagram showing another angle;

[0048] Fig. 3 for Fig. 1 A schematic diagram showing another angle;

[0049] Fig. 4 This is a schematic diagram of the circuit principle of a monitoring device for a switch cabinet according to an embodiment of the present invention;

[0050] Fig. 5 This is a schematic diagram of the circuit principle of the lighting module of the monitoring device for switch cabinet according to an embodiment of the present invention;

[0051] Fig. 6 This is a schematic diagram of the circuit principle of the monitoring host module of the monitoring device for switch cabinet according to an embodiment of the present utility model;

[0052] Fig. 7 This is a schematic diagram of the composite acquisition module of the monitoring device for switchgear according to an embodiment of the present invention;

[0053] Fig. 8 This is a schematic diagram of the circuit principle of the composite acquisition module of the monitoring device for switchgear according to an embodiment of the present invention.

[0054] Figure label:

[0055] Reference Name Reference Name 100 Monitoring host module 225 Voltage stabilizing circuit 110 Host shell 230 Acquisition communication unit 111 Protruding part 231 Second power supply circuit 120 First control circuit 232 Second control circuit 130 Display screen 233 Second wireless circuit 140 First wireless circuit 234 Signal acquisition circuit 150 Switching circuit 240 Depth sensor 160 First power supply circuit 250 Temperature sensor 200 Composite acquisition module 260 Pressure sensor 210 Annular shell 300 Electromagnet 220 Power taking unit 400 Illumination module 221 Power taking ring 410 First energy storage circuit 222 Energy taking coil 420 LED lamp unit 223 Bridge rectifier circuit 430 Control switch 224 Second energy storage circuit Detailed Implementation

[0056] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0057] It should be noted that, unless otherwise specified, when a feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. Furthermore, the descriptions of "upper," "lower," "left," "right," "top," and "bottom" used in this utility model are only relative to the relative positional relationships of the various components of this utility model in the accompanying drawings.

[0058] It should be noted that, unless otherwise specified, when one feature is referred to as having an "electrical connection" with another feature, the two features can be connected directly via pins, via cables, or via wireless transmission. Specific electrical connection methods are common to those skilled in the art, and they can implement the connection as needed.

[0059] Furthermore, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and not for limiting the scope of the invention. The term "and / or" as used herein includes any combination of one or more of the associated listed items.

[0060] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various elements, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from one another. For example, without departing from the scope of this disclosure, a first element may also be referred to as a second element, and similarly, a second element may also be referred to as a first element.

[0061] Reference Fig. 1 to Fig. 4According to an embodiment of the present invention, a monitoring device for a switchgear includes a monitoring host module 100, a plurality of composite acquisition modules 200, and a plurality of electromagnets 300. The monitoring host module 100 is installed on the cabinet or wall. The plurality of composite acquisition modules 200 are installed on corresponding contacts to collect data on the insertion depth, clamping force, and temperature of the corresponding contacts in real time, and are electrically connected to the monitoring host module 100. The plurality of electromagnets 300 are arranged along the side wall of the monitoring host module 100, and are electrically connected to the monitoring host module 100 respectively. The cabinet or wall has a plurality of slots on the inner edge of the corresponding slot. When the monitoring host module 100 is embedded in the cabinet or wall, the armature of each electromagnet 300 can be inserted into or moved away from the corresponding slot.

[0062] Installation Instructions: The monitoring host module 100 can be installed on the side wall of the high-voltage room entrance or on the side wall of a cabinet within the monitoring switch cabinet. During actual installation, the installation can be configured as needed. A slot matching the protruding shape on the back of the monitoring host module 100 is first created at the corresponding installation location by grooving or drilling. The slot can be directly grooved along the inner edge of the slot or fitted with a plastic component. When installing the monitoring host module 100, first energize the electromagnet 300. At this time, the armature is in a retracted state, allowing the monitoring host module 100 to be pushed into the corresponding slot, aligning the electromagnet 300 with the corresponding slot. After alignment, de-energize the electromagnet 300, and the armature will insert into the corresponding slot. Since controlling the electromagnet 300 requires the corresponding access permissions of the monitoring host module 100, external personnel cannot control the state of the electromagnet 300. Using a conventional screw structure, this allows for... The monitoring host module 100 is fixed in place. Since the internal armature is placed in the corresponding slot, the monitoring host module 100 cannot be easily removed, which not only improves the convenience of installation but also effectively enhances anti-theft capabilities. The corresponding composite acquisition module 200 is fitted onto the corresponding contact, thereby enabling real-time monitoring of the contact status. In this embodiment, each composite acquisition module 200 can collect the clamping force and temperature of the corresponding contact in real time, and monitor the insertion depth of the acquisition module on the contact to confirm whether the insertion depth of the composite acquisition module 200 meets the requirements. The relevant data is transmitted to the monitoring host module 100 in real time via wireless means. External personnel can directly view the status of multiple contacts of the switch cabinet on the monitoring host module 100 at the same time. This not only improves maintenance efficiency and saves manpower and material costs but also prevents accidents caused by insufficient contact clamping force or improper installation and maintenance processes, thereby improving equipment safety.

[0063] ReferenceFig. 5 In some embodiments of this utility model, a lighting module 400 is also included, which is disposed on the side wall of the monitoring host module 100. The lighting module 400, in conjunction with the monitoring host module 100, provides temporary lighting during installation to illuminate the environment, facilitating real-time observation of whether the electromagnet 300 of the monitoring host module 100 is aligned with the corresponding slot, effectively improving convenience.

[0064] Reference Fig. 5 In some embodiments of this utility model, the lighting module 400 includes a first energy storage circuit 410, an LED lamp unit 420, and a control switch 430. The LED lamp unit 420 is located around the monitoring host module 100. The control switch 430 is electrically connected between the first energy storage circuit 410 and the LED lamp unit 420, and is located on the front of the monitoring host module 100. By controlling the state of the control switch 430, the power supply to or from the LED lamp unit 420 can be controlled. The first energy storage circuit 410 may have an input connection port and can be an AC / DC conversion energy storage circuit structure directly connected to the mains power, or an energy storage circuit structure indirectly powered by the power supply of the monitoring host module 100, or a battery circuit structure, enabling energy replenishment, charging, or battery replacement. It should be noted that the control switch 430 and the first energy storage circuit 410 use circuit structures or components commonly used in the art, which can be installed and configured as needed by those skilled in the art.

[0065] Reference Fig. 1 to Fig. 3 , Fig. 6In some embodiments of this utility model, the monitoring host module 100 includes a host housing 110, a first control circuit 120, a display screen 130, a first wireless circuit 140, a switch switching circuit 150, and a first power supply circuit 160; a plurality of electromagnets 300 are respectively disposed around the host housing 110; the first control circuit 120 is disposed inside the host housing 110; the display screen 130 is embedded in the front of the host housing 110 and is electrically connected to the first control circuit 120; the first wireless circuit 140 is disposed inside the host housing 110 and is electrically connected to the first control circuit 120 and the composite acquisition module 200 respectively; the switch switching circuit 150 is disposed inside the host housing 110 and is electrically connected to the first control circuit 120 and the plurality of electromagnets 300 respectively; the first power supply circuit 160 is disposed inside the host housing 110 and is electrically connected to the first control circuit 120, the display screen 130, the first wireless circuit 140, and the switch switching circuit 150 respectively. Specifically, the back of the main unit housing 110 has a protruding portion, and several electromagnets 300 are distributed around the periphery of the protruding portion. When the main unit housing 110 is placed on a corresponding wall or cabinet, the protruding portion of the main unit housing 110 will be embedded into the corresponding slot. Since the overall length of the main unit housing 110 is longer than the protruding portion on the back, the edge of the main unit housing 110 can act as a limit to prevent the main unit housing 110 from being pushed in excessively. At the same time, it can also cover the slot, preventing damage from external sources that can directly confirm the position of the electromagnets 300. In addition, the edge of the main unit housing 110 can also be used with screws to achieve further fixation, improving reliability. External personnel can use terminals with appropriate permissions, such as mobile phones or tablets, to wirelessly interact with the first wireless circuit 140 and ultimately interact with the first control circuit 120. They can not only directly view the corresponding data on the mobile phone or tablet, but also... The on / off state of the switch switching circuit 150 can also be controlled by the first control circuit 120, thereby controlling the energized state of the electromagnet 300. In addition, it can also be operated on the display screen 130 on-site. After obtaining authorization by entering the corresponding password, it can also be operated and queried directly on the display screen 130. Specifically, it can be a combination of display screen 130 and keyboard, or it can be a touch screen display. Direct operation and clicking on the display screen 130 can be achieved. It should be noted that the structures of the first control circuit 120, display screen 130, first wireless circuit 140, switch switching circuit 150 and first power supply circuit 160 are all existing mature structures. Those skilled in the art can select and design them according to their working principles. For example, the first control circuit 120 can directly use a mature microcontroller or processor, so it will not be described in detail here.

[0066] In some embodiments of this utility model, the monitoring host module 100 further includes a voice player, which is electrically connected to the first control circuit 120. The first control circuit 120 can control the voice player to play relevant content, such as alarm prompts or related data playback. It can be set so that, for example, when the contact temperature, clamping force, and insertion depth reach a set threshold, an alarm prompt is made through the voice player to remind the staff to check and monitor.

[0067] In some embodiments of this utility model, the first power supply circuit 160 is a power supply circuit. The input terminal of the power supply circuit is electrically connected to the mains power, and the output terminal of the power supply circuit is electrically connected to the first control circuit 120, the display screen 130, the first wireless circuit 140, and the switch switching circuit 150, respectively. The first power supply circuit 160 also includes a battery, which is electrically connected to the first control circuit 120, the display screen 130, the first wireless circuit 140, and the switch switching circuit 150, respectively. The battery can be a Swiss RENATA CR2450HT 125-degree high-temperature button cell battery. The power supply circuit can be set to prioritize power supply to the monitoring host module 100 when the voltage drawn from it is higher than that of the button cell battery; when the power supply circuit cannot draw power, the battery energy is used. Using the power supply circuit to replenish power in real time helps to ensure that the battery energy is not consumed when a large current flows through the switch when it is closed, and that the battery can provide power when the mains power fails and cannot supply power normally, further improving reliability. The specific power supply circuit structure is also a conventional circuit structure in this field and will not be described in detail here.

[0068] Reference Fig. 7 and Fig. 8In some embodiments of this utility model, the composite acquisition module 200 includes an annular housing 210, a power-gathering unit 220, an acquisition and communication unit 230, a depth sensor 240, a temperature sensor 250, and a pressure sensor 260. The annular inner wall of the annular housing 210 is provided with a buckle for locking the contacts. The power-gathering unit 220 is disposed on the annular housing 210. The acquisition and communication unit 230 is disposed on the annular housing 210 and electrically connected to the power-gathering unit 220. The depth sensor 240 is disposed on the inner wall edge of the annular housing 210 and electrically connected to the acquisition and communication unit 230. The temperature sensor 250 is disposed on the inner wall edge of the annular housing 210 and electrically connected to the acquisition and communication unit 230. The pressure sensor 260 is disposed on the inner wall edge of the annular housing 210 and electrically connected to the acquisition and communication unit 230. The annular housing 210, with its snap-fit ​​mechanism, can be fixed to the corresponding contact. The power-taking unit 220 converts the magnetic field energy generated by the current passing through the contact into electrical energy to power the acquisition and communication unit 230 for normal operation. Simultaneously, the acquisition and communication unit 230 can transmit data with the first wireless circuit 140 of the monitoring host module 100. The depth sensor 240 can be a laser array sensor, capable of accurately measuring the contact insertion depth. The temperature sensor 250 and pressure sensor 260 are conventional structures; those skilled in the art can use appropriate sensor models as needed. The specific implementation of contact insertion depth, clamping force, and temperature monitoring is a mature technology in this field, therefore the specific principles will not be elaborated further.

[0069] Reference Fig. 8In some embodiments of this utility model, the power extraction unit 220 includes a power extraction ring 221, an energy extraction coil 222, a bridge rectifier circuit 223, a second energy storage circuit 224, and a voltage regulator circuit 225; the power extraction ring 221 is fixed to the outside of the annular housing 210; the energy extraction coil 222 is disposed on the power extraction ring 221 and electrically connected to the power extraction ring 221; the input terminal of the bridge rectifier circuit 223 is electrically connected to the energy extraction coil 222; the input terminal of the second energy storage circuit 224 is electrically connected to the output terminal of the bridge rectifier circuit 223; and the input terminal of the voltage regulator circuit 225 is electrically connected to the output terminal of the second energy storage circuit 224. The current-collecting ring 221 converts the magnetic field energy generated by the current passing through the contacts into electrical energy through the current-collecting coil. The bridge rectifier circuit 223 is used to rectify the electrical energy converted by the current-collecting coil 222, the second energy storage circuit 224 is used to store electrical energy, and the voltage regulator circuit 225 is used to stabilize the voltage to ensure stable voltage output. That is, the current-collecting ring 221 converts the magnetic field energy generated by the current passing through the contacts into electrical energy through the current-collecting coil, then the bridge rectifier circuit 223 rectifies the energy, the second energy storage circuit 224 stores the energy, and then the voltage regulator circuit 225 regulates the voltage to ensure stable voltage output. This ensures that the acquisition and communication unit 230 can work normally and stably. The voltage regulator is preferably an HT7533, which has the characteristics of high output voltage accuracy and low power consumption.

[0070] In some embodiments of this utility model, the power extraction unit 220 further includes an energy extraction circuit board disposed within the annular housing 210, on which the bridge rectifier circuit 223, the second energy storage circuit 224, and the voltage regulator circuit 225 are integrated. The energy extraction circuit board can fix the corresponding circuit structure to ensure that the circuit structure can work stably.

[0071] Reference Fig. 8In some embodiments of this utility model, the data acquisition and communication unit 230 includes a second power supply circuit 231, a second control circuit 232, a second wireless circuit 233, and a signal acquisition circuit 234; the input terminal of the second power supply circuit 231 is electrically connected to the output terminal of the power extraction unit 220; the second control circuit 232 is electrically connected to the second power supply circuit 231; the second wireless circuit 233 is electrically connected to the second control circuit 232; the three acquisition terminals of the signal acquisition circuit 234 are respectively electrically connected to the corresponding depth sensor 240, temperature sensor 250, and pressure sensor 260, and the output terminal of the signal acquisition circuit 234 is electrically connected to the second control circuit 232. The corresponding depth sensor 240, temperature sensor 250, and pressure sensor 260 will transfer the collected signals to the signal acquisition circuit 234. After being converted into electrical signals by the signal acquisition circuit 234, they will be calculated and analyzed by the second control circuit 232. Finally, the relevant signals will be transmitted to the monitoring host module 100 through the second wireless circuit 233. The monitoring host module 100 will then perform calculations and analyses again to determine the corresponding data of the composite acquisition module 200 and display it, so that relevant personnel can directly view it on the screen.

[0072] According to the embodiments of this utility model, the following effects can be achieved by the following configuration: Several composite acquisition modules 200 are fixed to the corresponding contacts of the switch cabinet. Through wireless connection, data transmission can be achieved with the monitoring host module 100, thereby confirming the installation depth, clamping force, and real-time temperature changes of the corresponding contacts. The relevant acquisition data can be directly displayed and recorded on the monitoring host module 100, thus enabling real-time monitoring of the contact status. Furthermore, the electromagnet 300 and the corresponding groove facilitate the fixing of the monitoring host module 100 in the corresponding position and improve anti-theft performance, preventing the monitoring host module 100 from being easily disassembled. When disassembly is required, by controlling the electromagnet 300 to be energized to disengage from the slot, the monitoring host module 100 can be directly removed, effectively improving the convenience and safety of disassembly and assembly.

[0073] The above are merely preferred embodiments of this utility model. This utility model is not limited to the above-described embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this disclosure, as long as they achieve the same technical effect, should be included within the scope of protection of this disclosure and should fall under the protection scope of this utility model. Within the protection scope of this utility model, the technical solutions and / or implementation methods can have various modifications and variations.

Claims

1. A monitoring device for switchgear, characterized in that, include: The monitoring host module (100) is installed in a cabinet or on a wall; Several composite acquisition modules (200) are installed on the corresponding contacts to collect data on the insertion depth, clamping force and temperature of the corresponding contacts in real time, and are electrically connected to the monitoring host module (100). Several electromagnets (300) are arranged along the side wall of the monitoring host module (100) and electrically connected to the monitoring host module (100); The cabinet or the wall has a number of slots on the inner edge of the corresponding slot. When the monitoring host module (100) is embedded in the cabinet or the wall, the armature of each electromagnet (300) can be inserted into or moved away from the corresponding slot.

2. The monitoring device for switchgear according to claim 1, characterized in that, It also includes a lighting module (400) located on the side wall of the monitoring host module (100).

3. The monitoring device for switchgear according to claim 2, characterized in that, The lighting module (400) includes: First energy storage circuit (410); LED light units (420) are located around the monitoring host module (100); A control switch (430) is electrically connected between the first energy storage circuit (410) and the LED lamp unit (420), and is located on the front of the monitoring host module (100).

4. The monitoring device for switchgear according to claim 1, characterized in that, The monitoring host module (100) includes: A main unit housing (110) is provided, and several electromagnets (300) are respectively disposed around the main unit housing (110); The first control circuit (120) is located inside the main unit housing (110); The display screen (130) is embedded in the front of the main unit housing (110) and is electrically connected to the first control circuit (120); The first wireless circuit (140) is located inside the main unit housing (110) and is electrically connected to the first control circuit (120) and the composite acquisition module (200) respectively; A switch switching circuit (150) is located inside the main unit housing (110) and is electrically connected to the first control circuit (120) and several electromagnets (300). The first power supply circuit (160) is located inside the main unit housing (110) and is electrically connected to the first control circuit (120), the display screen (130), the first wireless circuit (140), and the switch switching circuit (150).

5. The monitoring device for switchgear according to claim 4, characterized in that: The first power supply circuit (160) also includes a battery, which is electrically connected to the first control circuit (120), the display screen (130), the first wireless circuit (140), and the switch switching circuit (150).

6. The monitoring device for switchgear according to claim 4 or 5, characterized in that: The monitoring host module (100) also includes a voice player, which is mounted on the host housing (110) and electrically connected to the first control circuit (120).

7. The monitoring device for switchgear according to claim 1, characterized in that, The composite acquisition module (200) includes: The annular housing (210) has a snap-fit ​​on its inner annular wall for locking the contacts; A power extraction unit (220) is disposed on the annular housing (210); A data acquisition and communication unit (230) is disposed on the annular housing (210) and electrically connected to the power acquisition unit (220); A depth sensor (240) is disposed on the inner wall edge of the annular housing (210) and electrically connected to the acquisition and communication unit (230); A temperature sensor (250) is disposed on the inner wall edge of the annular housing (210) and electrically connected to the acquisition and communication unit (230); A pressure sensor (260) is disposed on the inner wall edge of the annular housing (210) and electrically connected to the acquisition and communication unit (230).

8. The monitoring device for switchgear according to claim 7, characterized in that, The power extraction unit (220) includes: A current-collecting ring (221) is fixed to the outside of the annular housing (210); An energy harvesting coil (222) is disposed on the power harvesting ring (221) and electrically connected to the power harvesting ring (221); The bridge rectifier circuit (223) is electrically connected to the energy harvesting coil (222) at its input terminal; The second energy storage circuit (224) has its input terminal electrically connected to the output terminal of the bridge rectifier circuit (223); the voltage regulator circuit (225) has its input terminal electrically connected to the output terminal of the second energy storage circuit (224).

9. The monitoring device for switchgear according to claim 8, characterized in that, The power extraction unit (220) also includes an energy extraction circuit board disposed within the annular housing (210), and the bridge rectifier circuit (223), the second energy storage circuit (224) and the voltage regulator circuit (225) are integrated on the energy extraction circuit board.

10. The monitoring device for switchgear according to claim 7, characterized in that, The data acquisition and communication unit (230) includes: The second power supply circuit (231) is electrically connected to the output terminal of the power extraction unit (220). The second control circuit (232) is electrically connected to the second power supply circuit (231); The second wireless circuit (233) is electrically connected to the second control circuit (232); The signal acquisition circuit (234) has three acquisition terminals that are electrically connected to the corresponding depth sensor (240), temperature sensor (250), and pressure sensor (260), respectively. The output terminal of the signal acquisition circuit (234) is electrically connected to the second control circuit (232).

Images