CN113720395A

CN113720395A - Low-voltage power distribution cabinet with protection device

Info

Publication number: CN113720395A
Application number: CN202111056830.2A
Authority: CN
Inventors: 李发有
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2021-11-30

Abstract

The embodiment of the application discloses a low-voltage power distribution cabinet with a protection device, which comprises a cabinet body, wherein a plurality of electrical devices are arranged in the cabinet body, and a temperature detection device, a smoke detection device and a current detection device are also arranged in the cabinet body; the temperature detection device is used for acquiring temperature information of the electric wires, the smoke detection device is used for acquiring smoke concentration information in the cabinet body, and the current detection device is used for acquiring current information of the electric wires; the cabinet body is also internally provided with a heat dissipation device and a power supply device, the output end of the temperature detection device is electrically connected with a first control switch device, and the first control switch device is used for controlling the power supply device to supply power to the heat dissipation device; the cabinet body is also internally provided with a second control switch device and an alarm, the output ends of the temperature detection device, the smoke detection device and the current detection device are electrically connected with the second control switch device, and the second control switch device is used for controlling the power supply device to supply power to the alarm.

Description

Low-voltage power distribution cabinet with protection device

Technical Field

The invention mainly relates to the technical field of electrical equipment, in particular to a low-voltage power distribution cabinet with a protection device.

Background

The low-voltage power distribution cabinet is a complete set of electric devices with alternating-current voltage and direct-current voltage below 1000V, and can comprise low-voltage complete set of switch equipment and control equipment. In practical application, when fault early warning information of the low-voltage power distribution cabinet is sent through GSM or GPRS, parameters (such as current, voltage and temperature values) of a fault point close to the power distribution equipment can be compared with actual real acquisition data, the parameters are used as basis to directly trigger the built-in wireless communication of the terminal to send the information to a related mobile phone and a remote server, and then warning is carried out on various monitoring systems through early warning windows. Therefore, the same type of early warning information is more and repeated, and some of the early warning information may receive nearly 50 pieces of the same information in half an hour, which seriously affects the processing of the real potential equipment fault early warning information.

Therefore, there is a need for a low-voltage distribution cabinet with a protection device, which improves the efficiency of fault monitoring of the low-voltage distribution cabinet.

Disclosure of Invention

One of the embodiments of the present specification provides a low voltage distribution cabinet with a protection device. This low-voltage distribution cabinet includes the cabinet body, the internal a plurality of electrical devices that install of cabinet, through the connection of electric lines between a plurality of electrical devices, its characterized in that, internal temperature-detecting device, smoke detection device and the current detection device of still installing of cabinet. Temperature-detecting device installs on a plurality of electric devices for acquireing a plurality of electric devices's temperature information, smoke detector installs the cabinet is internal, is used for acquireing the internal smog concentration information of cabinet, current detection device installs many on the electric wire, be used for acquireing many the current information of electric wire. The cabinet body is also internally provided with a heat dissipation device and a power supply device, the output end of the temperature detection device is electrically connected with a first control switch device, and the first control switch device is used for controlling the power supply device to supply power to the heat dissipation device according to the output signal of the temperature detection device. The cabinet body is also provided with a second control switch device and an alarm, the output end of the temperature detection device, the output end of the smoke detection device and the output end of the current detection device are electrically connected with the second control switch device, and the second control switch device is used for controlling the power supply device to supply power to the alarm according to the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device.

The temperature detection device is arranged on the plurality of electric devices and used for acquiring temperature information of the plurality of electric devices, and when the temperature of any one electric device is too high, the first control switch device controls the power supply device to supply power to the heat dissipation device, and the heat dissipation device conducts heat dissipation work. The smoke detection device is used for acquiring smoke concentration information in the cabinet body. The current detection device is arranged on the electric wires and used for obtaining the electric leakage condition of the electric wires. When the temperature detection device finds that the temperature of any one electric device is abnormal, the smoke concentration in the cabinet body is abnormal and/or the electric leakage of the electric wire is abnormal, the second control switch device controls the power supply device to supply power to the alarm to alarm. Therefore, the working state of the cabinet body is automatically monitored, excessive invalid fault information is prevented from being sent to workers, and the efficiency of monitoring the faults of the low-voltage power distribution cabinet is improved.

In some embodiments, the cabinet body is further provided with a processing device, and the temperature detection device comprises a temperature judgment part and four temperature sensing parts. The temperature sensing piece comprises a temperature sensor and a first comparator U1, the temperature sensing piece is arranged on one of the electric devices, the output end of the temperature sensor is electrically connected with the in-phase end of the first comparator U1, the reverse-phase end of the first comparator U1 is electrically connected with a first reference voltage Vref1, and the output end of the first comparator U1 is electrically connected with the temperature judging piece. The temperature judgment piece further comprises two first or gates U2 and a second or gate U3, two input ends of one first or gate U2 are electrically connected with output ends of two first comparators U1 respectively, output ends of two second or gates U3 are electrically connected with two input ends of a second or gate U3 respectively, and an output end of a second or gate U3 is electrically connected with the first control switch. The first control switch comprises a first triode switch circuit which comprises a first NPN triode Q1, the output end of the second OR gate U3 is electrically connected with the base electrode of the first NPN triode Q1, and the first triode switch circuit is connected between the power supply device and the heat dissipation device in series.

When any one of the temperature sensors detects that the temperature of the electrical device is too high, namely the voltage input by the in-phase end of any one of the first comparators U1 is greater than the first reference voltage Vref1, the second OR gate U3 outputs high level, the first NPN triode Q1 is conducted, the first triode switch circuit is in a conduction state, the power supply device is conducted with the heat dissipation device, and the heat dissipation device conducts electricity to perform heat dissipation work.

In some embodiments, heat abstractor includes total air-supply line, fan and many branch air pipes, total air-supply line is worn to establish on the cabinet body, the fan sets up in the total air-supply line, the length direction of total air-supply line with the direction of height of the cabinet body is parallel, many branch air pipes are installed the cabinet is internal, many branch air pipes are worn to establish on the total air-supply line, the length direction of many branch air pipes with the length direction of total air-supply line is perpendicular, many branch air pipes set up at different heights respectively. The first triode switching circuit is connected in series between the power supply device and the fan.

When any one temperature sensor detects the over-temperature of the electric device, the first triode switch circuit is in a conducting state, the fan is electrified, the outside air is extracted into the main air inlet pipe, and flows out of each position of the cabinet body through the plurality of branch air pipes, so that the hot air in the cabinet body is driven to flow out of the cabinet body.

In some embodiments, the temperature sensing element further comprises a second comparator U4, the output of the temperature sensor is electrically connected to the non-inverting terminal of the second comparator U4, and the inverting terminal of the second comparator U4 is electrically connected to a second reference voltage Vref 2. The temperature judgment piece further comprises two third or gates U5 and a fourth or gate U6, two input ends of one third or gate U5 are electrically connected with output ends of the two second comparators U4, and two output ends of the two third or gates U5 are electrically connected with two input ends of the fourth or gate U6. The smoke detection device comprises a smoke sensor and a third comparator U7, wherein the output end of the smoke sensor is electrically connected with the in-phase end of the third comparator U7, and the inverting end of the third comparator U7 is electrically connected with a third reference voltage Vref 3. The current detection device comprises four leakage inductors and a leakage judgment piece, wherein each leakage inductor comprises a current transformer and a fourth comparator U8, the current transformer is sleeved on the wire, the output section of the current transformer is electrically connected with the in-phase end of the fourth comparator U8, the opposite-phase end of the fourth comparator U8 is electrically connected with a fourth reference voltage Vref4, the leakage judgment piece comprises two fifth OR gates U9 and a sixth OR gate U10, two input ends of one fifth OR gate U9 are respectively and electrically connected with output ends of the two fourth comparators U8, and output ends of the two fifth OR gates U9 are respectively and electrically connected with two input ends of the sixth OR gate U10. The second control switch is electrically connected with a total judgment piece and a switch piece, the output end of the fourth or gate U6, the output end of the third comparator U7 and the output end of the sixth or gate U10 are electrically connected with the total judgment piece, the output end of the total judgment piece is electrically connected with the switch piece, and the switch piece is connected in series between the power supply device and the alarm.

When any one of the temperature sensors detects that the temperature of the electrical device is abnormal, that is, the voltage input to the non-inverting terminal of any one of the second comparators U4 is greater than the second reference voltage Vref2, the fourth or gate U6 outputs a high level. When the smoke concentration in the cabinet is abnormal, the voltage input to the non-inverting terminal of the third comparator U7 is greater than the third reference voltage Vref3, and the third comparator U7 outputs a high level. When any one of the wires has an abnormal leakage, that is, the input voltage of the non-inverting terminal of any one of the fourth comparators U8 is greater than the fourth reference voltage Vref4, the sixth or gate U10 outputs a high level. When the temperature of any electric device in the cabinet body, the smoke concentration in the cabinet body and the electric leakage of any electric wire are abnormal, the total judgment piece controls the switch piece to be in a closed state, so that the power supply device supplies power to the alarm, and the alarm performs alarming work.

In some embodiments, the overall judgment device includes a seventh or gate U11 and an eighth or gate U12, an output terminal of the fourth or gate U6 is electrically connected to one input terminal of the seventh or gate U11, an output terminal of the third comparator U7 is electrically connected to the other input terminal of the seventh or gate U11, an output terminal of the seventh or gate U11 is electrically connected to one input terminal of the eighth or gate U12, an output terminal of the sixth or gate U10 is electrically connected to the other input terminal of the eighth or gate U12, and an output terminal of the eighth or gate U12 is electrically connected to the switch. The switch device comprises a second triode switch circuit which comprises a second NPN triode Q2, the output end of the eighth OR gate U12 is electrically connected with the base electrode of the second NPN triode Q2, and the second triode switch circuit is connected between the power supply device and the alarm in series.

When the temperature of any electric device in the cabinet body, the smoke concentration in the cabinet body and the electric leakage of any electric wire are abnormal, namely, any one or more of the fourth or gate U6, the third comparator U7 and the sixth or gate U10 outputs high level, the eighth or gate U12 outputs high level, so that the second NPN triode Q2 is in a conducting state, the second triode switching circuit is in a conducting state, the power supply device supplies power to the alarm, and the alarm performs alarming operation.

In some embodiments, a base is arranged at the bottom of the cabinet body, a groove is formed in the base, a floating seat is abutted to the base, the floating seat is connected with the groove through a waterproof film, one end of the waterproof film is arranged in the groove, and the other end of the waterproof film is connected with the floating seat. The top of the cabinet body is provided with a wire outlet.

When water is accumulated on the ground, the floating seat floats on the surface of the accumulated water under the action of the buoyancy of the water, so that the waterproof film is unfolded, and the accumulated water is prevented from entering the cabinet body.

In some embodiments, a processing device is further disposed in the cabinet, and an output end of the temperature detection device, an output end of the smoke detection device, and an output end of the current detection device are all electrically connected to the processing device. The processing equipment is used for sending prompt information to the mobile equipment according to at least one of the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device.

When the temperature of any electric device in the cabinet body, the smoke concentration in the cabinet body and the electric leakage of any electric wire are abnormal, the processing equipment sends prompt information containing warning information.

In some embodiments, a cabinet door is further hinged to the cabinet body, and an electrically controlled lock is further arranged on the cabinet body and used for locking the cabinet door. Still be provided with human response piece and image acquisition piece on the cabinet body, human response piece reaches image acquisition piece with the treatment facility electricity is connected. The human body induction device is used for inducing a human body. The processing equipment is used for controlling the image acquisition piece to acquire the face image after the human body induction device induces the human body. The processing equipment is also used for carrying out authority verification based on the face image and controlling the electric control lock to be in an open state when the authority verification passes.

When the cabinet door needs to be unlocked, after an operator is sensed by the human body sensing device, the processing equipment controls the image acquisition part to acquire the face image, the processing equipment carries out authority verification based on the face image, when the authority verification is judged to pass, the electric control lock is controlled to be in an open state, and if the authority verification is judged not to pass, the electric control lock is controlled to be kept in a closed state.

In some embodiments, the cabinet body is further provided with a light supplementing piece, the light supplementing piece comprises a plurality of monochromatic light sources, the cabinet body is further provided with a display screen, and the display screen is used for displaying a photo frame for indicating a user to align the face of the user. The processing equipment is used for lighting one of the plurality of monochromatic light sources after the human body sensing device senses a human body, controlling the display screen to display the photo frame and controlling the image acquisition part to acquire a human face image.

When the cabinet door needs to be unlocked, an operator is sensed by the human body sensing device, then the display screen is controlled to display the photo frame, one of the monochromatic light sources is lightened, the photo frame prompts the operator to align the face, and the image acquisition part acquires the face image aligned.

In some embodiments, the processing device is further configured to adjust parameters of the picture frame based on the illuminated monochromatic light source, wherein the picture frame parameters include a scale and an angle.

The processing device may pre-store the photo frame parameters corresponding to each monochromatic light source, and when one monochromatic light source is lighted, control the display screen to mount the corresponding photo frame parameters to display the photo frame.

Drawings

The present application will be further explained by way of exemplary embodiments, which will be described in detail by way of the accompanying drawings. These embodiments are not intended to be limiting, and in these embodiments like numerals are used to indicate like structures, wherein:

fig. 1 is a schematic structural view of a low-voltage distribution cabinet with a protection device according to some embodiments of the present application;

FIG. 2 is an exemplary block diagram of a computing device shown in accordance with some embodiments of the present application;

FIG. 3 is a schematic diagram of exemplary hardware and/or software of a mobile device shown in accordance with some embodiments of the present application;

fig. 4 is an exemplary block diagram of a low-voltage distribution cabinet with a protection device according to some embodiments of the present application;

FIG. 5 is an exemplary circuit schematic of a temperature determination component according to some embodiments of the present application;

FIG. 6 is an exemplary circuit schematic of a temperature determination component according to other embodiments of the present application;

figure 7 is an exemplary circuit schematic of a smoke detection device according to some embodiments of the present application;

FIG. 8 is a circuit schematic of a current sensing device according to some embodiments of the present application;

FIG. 9 is a circuit schematic of a second control switch according to some embodiments of the present application;

FIG. 10a is a schematic view of a picture frame according to some embodiments of the present application;

FIG. 10b is a schematic view of a picture frame according to other embodiments of the present application.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. It is understood that these exemplary embodiments are given solely to enable those skilled in the relevant art to better understand and implement the present invention, and are not intended to limit the scope of the invention in any way. Unless otherwise apparent from the context, or otherwise indicated, like reference numbers in the figures refer to the same structure or operation.

It should be understood that as used herein, "device," "unit" and/or "module" is one that is used to distinguish different components, elements, components, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that these steps and elements do not constitute an exclusive list, or that an apparatus may comprise other steps or elements.

Although various references are made herein to certain modules or units in accordance with embodiments of the present application, any number of different modules or units may be used and run on the client and/or server. The modules are merely illustrative and different aspects of the sum may use different modules.

Flow charts are used herein to illustrate operations performed according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.

Fig. 1 is a schematic view of an application scenario of a low-voltage distribution cabinet with a protection device according to some embodiments of the present application.

As shown in fig. 1, the low voltage distribution cabinet with protection device 100 may include a processing device 110, a network 120, a mobile device 130, a storage device 140 and a cabinet. The various components of the system 100 may be interconnected by a network 120. For example, the processing device 110 and at least one terminal 130 may be connected or in communication via the network 120.

In some embodiments, the processing device 110 can be used to process information and/or data related to the low voltage distribution cabinet 100 with the protection device. For example, the processing device 110 sends a prompt message to the mobile device 130 based on at least one of the output signal of the temperature detection means, the output signal of the smoke detection means, and the output signal of the current detection means. Further description of the processing device 110 may be found in other portions of the present application. Such as fig. 2-9 and the description thereof.

In some embodiments, the processing device 110 may be regional or remote. For example, processing device 110 may access information and/or material stored in mobile device 130 and storage device 140 via network 120. In some embodiments, processing device 110 may interface directly with mobile device 130 and storage device 140 to access information and/or material stored therein. In some embodiments, the processing device 110 may execute on a cloud platform. For example, the cloud platform may include one or any combination of a private cloud, a public cloud, a hybrid cloud, a community cloud, a decentralized cloud, an internal cloud, and the like.

In some embodiments, the processing device 110 may comprise a processor. The processor may process data and/or information related to the low voltage distribution cabinet with the protection device to perform one or more of the functions described in the present application. For example, the processor may receive control instructions sent by the mobile device 130. As another example, the processor may retrieve an electronic map stored by the storage device 140. In some embodiments, a processor may include one or more sub-processors (e.g., a single core processing device or a multi-core processing device). Merely by way of example, a processor may include a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), an Application Specific Instruction Processor (ASIP), a Graphics Processor (GPU), a Physical Processor (PPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a programmable logic circuit (PLD), a controller, a microcontroller unit, a Reduced Instruction Set Computer (RISC), a microprocessor, and the like or any combination thereof.

The network 120 may facilitate the exchange of data and/or information in the low voltage distribution cabinet 100 with the protection devices. In some embodiments, one or more components (e.g., the processing device 110, the mobile device 130, and the storage device 140) in the low voltage power distribution cabinet with protection 100 may send data and/or information to other components in the low voltage power distribution cabinet with protection 100 via the network 120. For example, the parameters of the picture frame corresponding to each monochromatic light source stored by the storage device 140 may be transmitted to the processing device 110 through the network 120. As another example, processing device 110 may transmit the reminder information to mobile device 130 via network 120. In some embodiments, the network 120 may be any type of wired or wireless network. For example, network 120 may include a cable network, a wired network, a fiber optic network, a telecommunications network, an intranet, the internet, a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), a Metropolitan Area Network (MAN), a Public Switched Telephone Network (PSTN), a bluetooth network, a ZigBee network, a Near Field Communication (NFC) network, the like, or any combination thereof. In some embodiments, network 120 may include one or more network access points. For example, the network 120 may include wired or wireless network access points, such as base stations and/or internet switching points 120-1, 120-2, …, through which one or more components of the low voltage distribution cabinet 100 with protective devices may connect to the network 120 to exchange data and/or information.

In some embodiments, the mobile device 130 may obtain information or data in the low voltage distribution cabinet 100 with the protection device. In some embodiments, the user may obtain the water quality detection result of the processing device 110 through the mobile device 130, for example, the user may view the prompt information sent by the processing device 110 through the mobile device 130, and the terminal 130 in the user may broadcast the prompt information sent by the processing device 110 to the user in a voice broadcast manner. For example, the mobile device 130 may be connected (e.g., wired, wirelessly connected) to the processing device 110 via the network 120, and the user may obtain the reminder information sent by the processing device 110 via the mobile device 130. The mobile device 130 may be used to display alert information.

In some embodiments, the mobile device 130 may also upload information or data in the low voltage power distribution cabinet 100 with the protection device. For example, the mobile device 130 may be connected (e.g., wired, wirelessly connected) to the processing device 110 via the network 120 to send the authorization verification instruction to the processing device 110.

In some embodiments, the mobile device 130 may include one or any combination of a mobile apparatus 130-1, a tablet computer 130-2, a notebook computer 130-3, and the like. In some embodiments, the mobile device 130-1 may include a wearable device, a smart mobile device, a virtual reality device, an augmented reality device, and the like, or any combination thereof. In some embodiments, the wearable device may include a smart bracelet, smart footwear, smart glasses, smart helmet, smart watch, smart clothing, smart backpack, smart accessory, smart handle, or the like, or any combination thereof. In some embodiments, the smart mobile device may include a smart phone, a Personal Digital Assistant (PDA), a gaming device, a navigation device, a POS device, and the like, or any combination thereof. In some embodiments, the metaverse device and/or the augmented reality device may include metaverse helmets, metaverse glasses, metaverse eyewear, augmented reality helmets, augmented reality glasses, augmented reality eyewear, and the like, or any combination thereof.

In some embodiments, the storage device 140 may be connected to the network 120 to enable communication with one or more components of the low voltage distribution cabinet with protection 100 (e.g., the processing device 110, the mobile device 130, etc.). One or more components of the low voltage distribution cabinet 100 with protection devices can access data or instructions stored in the storage device 140 through the network 120. In some embodiments, the storage device 140 may be directly connected to or in communication with one or more components (e.g., the processing device 110, the mobile device 130) in the low voltage distribution cabinet 100 with the protection device. In some embodiments, the storage device 140 may be part of the processing device 110. In some embodiments, the processing device 110 may also be located in the mobile device 130.

In some embodiments, the cabinet body is provided with a plurality of electrical devices, the plurality of electrical devices are connected through wires, and the cabinet body is also provided with a temperature detection device, a smoke detection device and a current detection device. The temperature detection device is arranged on the plurality of electric devices and used for acquiring temperature information of the plurality of electric devices, the smoke detection device is arranged in the cabinet body and used for acquiring smoke concentration information in the cabinet body, and the current detection device is arranged on the plurality of electric wires and used for acquiring current information of the plurality of electric wires; the cabinet body is also internally provided with a heat dissipation device and a power supply device, the output end of the temperature detection device is electrically connected with a first control switch device, and the first control switch device is used for controlling the power supply device to supply power to the heat dissipation device according to the output signal of the temperature detection device. The cabinet body is also internally provided with a second control switch device and an alarm, the output end of the temperature detection device, the output end of the smoke detection device and the output end of the current detection device are electrically connected with the second control switch device, and the second control switch device is used for controlling the power supply device to supply power to the alarm according to the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device.

It should be noted that the foregoing description is provided for illustrative purposes only, and is not intended to limit the scope of the present application. Many variations and modifications will occur to those skilled in the art in light of the teachings herein. The features, structures, and other characteristics of the exemplary embodiments described herein may be combined in various ways to obtain additional and/or alternative exemplary embodiments. For example, the storage device 140 may be a data storage device comprising a cloud computing platform, such as a public cloud, a private cloud, a community and hybrid cloud, and the like. However, such changes and modifications do not depart from the scope of the present application.

FIG. 2 is an exemplary block diagram of a computing device shown in accordance with some embodiments of the present application.

In some embodiments, processing device 110 and/or mobile device 130 may be implemented on computing device 200. For example, the processing device 110 may implement and perform the functions disclosed herein on the computing device 200.

As shown in fig. 2, computing device 200 may include a processor 210, a read only memory 220, a random access memory 230, a communication port 240, an input/output interface 250, and a hard disk 260.

The processor 210 can execute the calculation instructions (program code) and perform the functions of the low voltage distribution cabinet with protection device 100 described herein. The computing instructions may include programs, objects, components, data structures, procedures, modules, and functions (which refer to specific functions described herein). For example, the processor 210 may process the retrieval of an electronic map from the storage device 140 of the low voltage distribution cabinet 100 with the protection device. In some embodiments, processor 210 may include microcontrollers, microprocessors, Reduced Instruction Set Computers (RISC), Application Specific Integrated Circuits (ASIC), application specific instruction set processors (ASIP), Central Processing Units (CPU), Graphics Processing Units (GPU), Physical Processing Units (PPU), microcontroller units, Digital Signal Processors (DSP), Field Programmable Gate Array (FPGA), Advanced RISC Machines (ARM), programmable logic devices, any circuit or processor capable of executing one or more functions, or the like, or any combination thereof. For illustration only, the computing device 200 in fig. 2 depicts only one processor, but it should be noted that the computing device 200 in the present application may also include multiple processors.

The memory (e.g., Read Only Memory (ROM) 220, Random Access Memory (RAM) 230, hard disk 260, etc.) of the computing device 200 may store data/information obtained from any other component of the low voltage power distribution cabinet 100 with a protection device. Such as an electronic map stored by the storage device 140. As another example, storage device 140 stores instructions that determine a walking pattern of the walking assembly based on the control instructions. Exemplary ROMs may include Mask ROM (MROM), Programmable ROM (PROM), erasable programmable ROM (PEROM), Electrically Erasable Programmable ROM (EEPROM), compact disk ROM (CD-ROM), digital versatile disk ROM, and the like. Exemplary RAM may include Dynamic RAM (DRAM), double-data-rate synchronous dynamic RAM (DDR SDRAM), Static RAM (SRAM), thyristor RAM (T-RAM), zero-capacitance (Z-RAM), and the like.

The input/output interface 250 may be used to input or output signals, data, or information. In some embodiments, the input/output interface 250 can enable a user to contact the low voltage distribution cabinet 100 with the protection device. For example, the user receives training tasks sent by the processing device 110 via the input/output interface 250. Also for example, control instructions sent by the user to the processing device 110 via the input/output interface 250. In some embodiments, input/output interface 250 may include an input device and an output device. Exemplary input devices may include a keyboard, mouse, touch screen, microphone, and the like, or any combination thereof. Exemplary output devices may include a display device, speakers, printer, projector, etc., or any combination thereof. Exemplary display devices may include Liquid Crystal Displays (LCDs), Light Emitting Diode (LED) based displays, flat panel displays, curved displays, television equipment, Cathode Ray Tubes (CRTs), and the like, or any combination thereof. The communication port 240 may be connected to a network for data communication. The connection may be a wired connection, a wireless connection, or a combination of both. The wired connection may include an electrical cable, an optical cable, or a telephone line, among others, or any combination thereof. The wireless connection may include bluetooth, Wi-Fi, WiMax, WLAN, ZigBee, mobile networks (e.g., 3G, 4G, or 5G, etc.), and the like, or any combination thereof. In some embodiments, the communication port 240 may be a standardized port, such as RS232, RS485, and the like. In some embodiments, the communication port 240 may be a specially designed port.

Computing device 200 depicts only one central processor and/or processor for purposes of illustration only. However, it should be noted that the computing device 200 in the present application may include a plurality of central processors and/or processors, and thus operations described in the present application that are implemented by one central processor and/or processor may also be implemented by a plurality of central processors and/or processors, collectively or independently. For example, a central processor and/or processors of computing device 200 may perform steps a and B. In another example, steps a and B may also be performed by two different central processors and/or processors in computing device 200, either in combination or separately (e.g., a first processor performing step a and a second processor performing step B, or both a first and second processor performing steps a and B together).

Fig. 3 is a schematic diagram of exemplary hardware and/or software of a mobile device (e.g., mobile device 130) that may be implemented on mobile device 300 according to some embodiments of the present application, according to some embodiments of the present application.

As shown in fig. 3, the mobile device 300 may include a communication unit 310, a display unit 320, a Graphics Processor (GPU) 330, a Central Processing Unit (CPU) 340, an input/output unit 350, a memory 360, a storage unit 370, and the like. In some embodiments, any other suitable components, including but not limited to a bus or a controller (not shown), may also be included within the mobile device 300. In some embodiments, operations 361 (e.g., iOS, Android, Windows Phone, etc.) and application programs 362 may be loaded from storage unit 370 into memory 360 for execution by CPU 340. Application 380 may be any other suitable application for sending, receiving, and presenting information (e.g., reminder information sent by processing device 110, etc.) from processing device 110 and/or storage device 140. The interaction of the user with the information flow can be realized via the input/output unit 350 and provided via the network 120 to the processing device 110 and/or other components of the low voltage distribution cabinet with protection 100. In some embodiments, a user may send control instructions to the processing device 110 through the mobile device 300. The user may also obtain reminder information through the mobile device 300. For example, the user may acquire the prompt information transmitted by the processing device 110 via the display unit 320.

To implement the various modules, units and their functionality described in this application, a computing device or mobile device may serve as a hardware platform for one or more of the components described in this application. The hardware elements, operating and programming languages of such computers or mobile devices are conventional in nature, and those skilled in the art who have the benefit of these techniques will be able to adapt such techniques to the information displays described herein. A computer with user interface elements may be used to implement a Personal Computer (PC) or other type of workstation or mobile device, and if suitably programmed, may also act as a server.

Fig. 4 is an exemplary block diagram of a low-voltage distribution cabinet with a protection device according to some embodiments of the present application.

In some embodiments, as shown in fig. 4, a low-voltage power distribution cabinet with a protection device may include a cabinet body, in which a plurality of electrical devices are installed, and the plurality of electrical devices are connected through wires. The cabinet body can be internally provided with a temperature detection device which is arranged on the plurality of electric devices and used for acquiring the temperature information of the plurality of electric devices. The cabinet body is also internally provided with a heat dissipation device and a power supply device, the output end of the temperature detection device is electrically connected with a first control switch device, and the first control switch device is used for controlling the power supply device to supply power to the heat dissipation device according to the output signal of the temperature detection device.

Referring to fig. 5, fig. 5 is a schematic circuit diagram illustrating an exemplary temperature determination element according to some embodiments of the present disclosure, and in some embodiments, the temperature detection device may include a temperature determination element and four temperature sensing elements. The temperature sensing part comprises a temperature sensor and a first comparator U1, the temperature sensing part is arranged on an electric device, the output end of the temperature sensor is electrically connected with the in-phase end of the first comparator U1, the reverse-phase end of the first comparator U1 is electrically connected with a first reference voltage Vref1, and the output end of the first comparator U1 is electrically connected with the temperature judging part. The temperature judgment piece also comprises two first OR gates U2 and a second OR gate U3, two input ends of one first OR gate U2 are respectively and electrically connected with output ends of two first comparators U1, output ends of two second OR gates U3 are respectively and electrically connected with two input ends of a second OR gate U3, and an output end of a second OR gate U3 is electrically connected with the first control switch. The first control switch comprises a first triode switch circuit, the first triode switch circuit comprises a first NPN triode Q1, the output end of the second OR gate U3 is electrically connected with the base electrode of the first NPN triode Q1, and the first triode switch circuit is connected between the power supply device and the heat dissipation device in series.

Specifically, when any one of the temperature sensors detects that the temperature of the electrical device is too high, that is, the voltage input at the non-inverting terminal of any one of the first comparators U1 is greater than the first reference voltage Vref1, the second or gate U3 outputs a high level, the first NPN triode Q1 is turned on, the first triode switching circuit is in a conducting state, the power supply device is turned on with the heat dissipation device, and the heat dissipation device is powered on to perform heat dissipation.

In some embodiments, the heat dissipation device may include a main air inlet pipe, a fan, and a plurality of branch air pipes, the main air inlet pipe is disposed on the cabinet body, the fan is disposed in the main air inlet pipe, the length direction of the main air inlet pipe is parallel to the height direction of the cabinet body, the plurality of branch air pipes are disposed in the cabinet body, the plurality of branch air pipes are disposed on the main air inlet pipe, the length direction of the plurality of branch air pipes is perpendicular to the length direction of the main air inlet pipe, and the plurality of branch air pipes are disposed at different heights. The first triode switching circuit is connected in series between the power supply device and the fan.

Specifically, when any one temperature sensor detects the high temperature of the electric device, the first triode switch circuit is in a conducting state, the fan is electrified, the outside air is extracted into the main air inlet pipe, and flows out of each position of the cabinet body through the plurality of branch air pipes, so that the hot air in the cabinet body is driven to flow out of the cabinet body.

In some embodiments, a smoke detection device and a current detection device may be further disposed in the cabinet. The smoke detection device is installed in the cabinet body and used for obtaining smoke concentration information in the cabinet body, and the current detection device is installed on the electric wires and used for obtaining current information of the electric wires. The cabinet body is also internally provided with a second control switch device and an alarm, the output end of the temperature detection device, the output end of the smoke detection device and the output end of the current detection device are electrically connected with the second control switch device, and the second control switch device is used for controlling the power supply device to supply power to the alarm according to the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device. Referring to fig. 6, fig. 6 is a schematic circuit diagram of an exemplary temperature determination device according to other embodiments of the present disclosure, the temperature sensing device further includes a second comparator U4, an output terminal of the temperature sensor is electrically connected to a non-inverting terminal of the second comparator U4, and an inverting terminal of the second comparator U4 is electrically connected to a second reference voltage Vref 2. The temperature judgment piece also comprises two third or gates U5 and a fourth or gate U6, two input ends of one third or gate U5 are respectively and electrically connected with output ends of two second comparators U4, and two output ends of two third or gates U5 are respectively and electrically connected with two input ends of a fourth or gate U6. Referring to fig. 7, fig. 7 is a schematic circuit diagram of a smoke detection device according to some embodiments of the present disclosure, the smoke detection device includes a smoke sensor and a third comparator U7, an output terminal of the smoke sensor is electrically connected to a non-inverting terminal of the third comparator U7, and an inverting terminal of the third comparator U7 is electrically connected to a third reference voltage Vref 3. Referring to fig. 8, fig. 8 is a circuit diagram of a current detection device according to some embodiments of the present disclosure, the current detection device includes four leakage inductors and a leakage judgment component, the leakage inductors include a current transformer and a fourth comparator U8, the current transformer is sleeved on a wire, an output section of the current transformer is electrically connected to a non-inverting terminal of the fourth comparator U8, an inverting terminal of the fourth comparator U8 is electrically connected to a fourth reference voltage Vref4, the leakage judgment component includes two fifth or gates U9 and a sixth or gate U10, two input terminals of the fifth or gate U9 are electrically connected to output terminals of the two fourth comparators U8, and output terminals of the two fifth or gates U9 are electrically connected to two input terminals of the sixth or gate U10. Referring to fig. 9, fig. 9 is a circuit diagram of a second control switch according to some embodiments of the present disclosure, the second control switch is electrically connected to a total judgment component and a switch component, an output terminal of the fourth or gate U6, an output terminal of the third comparator U7, and an output terminal of the sixth or gate U10 are electrically connected to the total judgment component, an output terminal of the total judgment component is electrically connected to the switch component, and the switch component is connected in series between the power supply device and the alarm. The general judgment part comprises a seventh OR gate U11 and an eighth OR gate U12, wherein the output end of a fourth OR gate U6 is electrically connected with one input end of the seventh OR gate U11, the output end of a third comparator U7 is electrically connected with the other input end of the seventh OR gate U11, the output end of a seventh OR gate U11 is electrically connected with one input end of the eighth OR gate U12, the output end of a sixth OR gate U10 is electrically connected with the other input end of an eighth OR gate U12, and the output end of an eighth OR gate U12 is electrically connected with a switch. The switch component comprises a second triode switch circuit which comprises a second NPN triode Q2, the output end of the eighth OR gate U12 is electrically connected with the base electrode of the second NPN triode Q2, and the second triode switch circuit is connected between the power supply device and the alarm in series.

Specifically, when any one of the temperature sensors detects that the temperature of the electrical device is abnormal, that is, the voltage input to the non-inverting terminal of any one of the second comparators U4 is greater than the second reference voltage Vref2, the fourth or gate U6 outputs a high level. When the smoke concentration in the cabinet is abnormal, the voltage input to the non-inverting terminal of the third comparator U7 is greater than the third reference voltage Vref3, and the third comparator U7 outputs a high level. When any one of the wires has an abnormal leakage, that is, the input voltage of the non-inverting terminal of any one of the fourth comparators U8 is greater than the fourth reference voltage Vref4, the sixth or gate U10 outputs a high level. When the temperature of any electric device in the cabinet body, the smoke concentration in the cabinet body and the electric leakage of any electric wire are abnormal, namely, any one or more of the fourth or gate U6, the third comparator U7 and the sixth or gate U10 outputs high level, the eighth or gate U12 outputs high level, so that the second NPN triode Q2 is in a conducting state, the second triode switching circuit is in a conducting state, the power supply device supplies power to the alarm, and the alarm performs alarming operation.

In some embodiments, a base is arranged at the bottom of the cabinet body, a groove is further formed in the base, a floating seat is further abutted to the base, the floating seat is connected with the groove through a waterproof film, one end of the waterproof film is arranged in the groove, and the other end of the waterproof film is connected with the floating seat. The top of the cabinet body is provided with a wire outlet.

Specifically, when ponding appears on the ground, the floating seat floats on the surface of ponding under the buoyancy of water for waterproof film expandes, thereby prevents that ponding from getting into in the cabinet body.

In some embodiments, the cabinet further includes a processing device 110, and the output end of the temperature detection device, the output end of the smoke detection device, and the output end of the current detection device are electrically connected to the processing device 110. In some embodiments, the output of the fourth or gate U6, the output of the third comparator U7, and the output of the sixth or gate U10 are all electrically connected to the processing device 110. The processing device 110 is configured to send a prompt message to the mobile device according to at least one of the output signal of the temperature detection device, the output signal of the smoke detection device, and the output signal of the current detection device.

Specifically, when the temperature of any electrical device in the cabinet, the smoke concentration in the cabinet, and the leakage of any electric wire are abnormal, the output terminal of the fourth or gate U6, the output terminal of the third comparator U7, and the output terminal of the sixth or gate U10 output corresponding signals to the processing device 110, and the processing device 110 sends a prompt message including warning information, where the prompt message may include a fault type, such as temperature abnormality, smoke concentration abnormality, and/or current leakage abnormality.

In some embodiments, a cabinet door can be hinged to the cabinet body, and an electric control lock is further arranged on the cabinet body and used for locking the cabinet door. The cabinet body is also provided with a human body induction part and an image acquisition part which are electrically connected with the processing equipment 110. The human body induction device is used for inducing a human body. In some embodiments, the processing device 110 may be configured to control the image capturing component to capture the face image after the human body sensing device senses a human body. In some embodiments, the processing device 110 may further be configured to perform authorization verification based on the face image, and control the electrically controlled lock to be in the open state when the authorization verification passes. Still be provided with the light filling piece on the cabinet body, the light filling piece includes a plurality of monochromatic light sources, still is provided with the display screen on the cabinet body, and the display screen is used for showing the photo holder frame that instructs the user to carry out the people's face and align. In some embodiments, the processing device 110 may be configured to illuminate one of the plurality of monochromatic light sources after the human body sensing device senses a human body, control the display screen to display the photo frame, and control the image capturing unit to capture a human face image. In some embodiments, the processing device 110 may also be configured to adjust parameters of the picture frame based on the illuminated monochromatic light source, wherein the picture frame parameters include scale and angle.

Specifically, when the cabinet door needs to be unlocked, after an operator is sensed by the human body sensing device, the processing equipment 110 controls the image acquisition part to acquire face images, the processing equipment 110 carries out authority verification based on the face images, when the authority verification is judged to pass, the electric control lock is controlled to be in an open state, and if the authority verification is judged not to pass, the electric control lock is controlled to be kept in a closed state. Furthermore, when the cabinet door needs to be unlocked, after an operator is sensed by the human body sensing device, the display screen is controlled to display the photo frame, one of the monochromatic light sources is lightened, the photo frame prompts the operator to align the face, and the image acquisition part acquires the aligned face image. The processing device 110 may pre-store the photo frame parameters corresponding to each monochromatic light source, and when one monochromatic light source is lit, control the display screen to mount the corresponding photo frame parameters to display the photo frame, where the alignment points of the five sense organs are calibrated in the photo frame. For example, referring to fig. 10a, the monochromatic light source with red color corresponds to the picture frame parameters: the proportion of the photo frame to the display screen is 1: 2. the picture frame is inclined to the right by 45 degrees. For example, referring to fig. 10b, the monochromatic light source with green color corresponds to the picture frame parameters: the proportion of the photo frame to the display screen is 1: 3. the picture frame is inclined 15 degrees to the right.

In some embodiments, a plurality of legal face images may be pre-stored in the processing device 110, and when the processing device 110 performs the authority verification based on the face images, it may search whether a legal face image corresponding to the face image exists from the plurality of legal face images, for example, a legal face image having a similarity greater than 90 percent with the face image exists.

In some embodiments, before the processing device 110 searches whether a legal face image corresponding to the face image exists from the multiple legal face images, the image color in the face image may be further obtained, it is determined whether the image color is consistent with the color of the lit monochromatic light source, and if so, it may further search whether a legal face image corresponding to the face image exists from the multiple legal face images.

Having thus described the basic concept, it will be apparent to those skilled in the art that the foregoing detailed disclosure is to be considered merely illustrative and not restrictive of the broad application. Various modifications, improvements and adaptations to the present application may occur to those skilled in the art, although not explicitly described herein. Such modifications, improvements and adaptations are proposed in the present application and thus fall within the spirit and scope of the exemplary embodiments of the present application.

Also, this application uses specific language to describe embodiments of the application. Reference throughout this specification to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the present application is included in at least one embodiment of the present application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon. Accordingly, various aspects of the present application may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software. The above hardware or software may be referred to as "data block," "module," "engine," "unit," "component," or "software. Furthermore, aspects of the present application may be represented as a computer product, including computer readable program code, embodied in one or more computer readable media.

The computer storage medium may comprise a propagated data signal with the computer program code embodied therewith, for example, on baseband or as part of a carrier wave. The propagated signal may take any of a variety of forms, including electromagnetic, optical, etc., or any suitable combination. A computer storage medium may be any computer readable medium except computer readable storage medium, which can communicate, propagate, or transport a program for use by or in connection with an instruction execution, apparatus, or device. Program code located on a computer storage medium may be propagated over any suitable medium, including radio, cable, fiber optic cable, RF, or the like, or any combination of the preceding.

Computer program code required for the operation of various portions of the present application may be written in any one or more programming languages, including an object oriented programming language such as Java, Scala, Smalltalk, Eiffel, JADE, Emerald, C + +, C #, VB.NET, Python, and the like, a conventional programming language such as C, Visual Basic, Fortran 2003, Perl, COBOL 2002, PHP, ABAP, a dynamic programming language such as Python, Ruby, and Groovy, or other programming languages, and the like. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any network format, such as a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet), or in a cloud computing environment, or as a service, such as a software as a service (SaaS).

Furthermore, unless explicitly stated in the claims, the order of processing elements and sequences, the use of alphanumeric characters, or the use of other names in the present application is not intended to limit the flow or order of the present application. While various presently contemplated embodiments of the invention have been discussed in the foregoing disclosure by way of example, it is to be understood that such detail is solely for that purpose and that the appended claims are not limited to the disclosed embodiments, but, on the contrary, are intended to cover all modifications and equivalent arrangements that are within the spirit and scope of the embodiments herein. For example, although the components described above may be implemented by hardware devices, they may also be implemented by software-only solutions, as described for installation on existing servers or mobile devices.

Similarly, it should be noted that in the preceding description of embodiments of the application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This disclosure, however, is not intended to suggest that more features are required of the subject application than are set forth in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed above.

Numerals describing the number of components, attributes, etc. are used in some embodiments, it being understood that such numerals used in the description of the embodiments are modified in some instances by the use of the modifier "about", "approximately" or "substantially". Unless otherwise indicated, "about", "approximately" or "substantially" indicates that the number allows a variation of ± 20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximations that may vary depending upon the desired properties of the individual embodiments. In some embodiments, the numerical parameter should take into account the specified significant digits and be preserved with a general number of digits. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the range are approximations, in the specific examples, such numerical values are set forth as precisely as possible within the scope of the application.

The entire contents of each patent, patent application publication, and other material cited in this application, such as articles, books, specifications, publications, documents, and the like, are hereby incorporated by reference into this application. Except where the application is filed in a manner inconsistent or contrary to the present disclosure, and except where the claim is filed in its broadest scope (whether present or later appended to the application) as well. It is noted that the descriptions, definitions and/or use of terms in this application shall control if they are inconsistent or contrary to the present disclosure.

Finally, it should be understood that the embodiments described herein are merely illustrative of the principles of the embodiments of the present application. Other variations are also possible within the scope of the present application. Thus, by way of example, and not limitation, alternative configurations of the embodiments of the present application can be viewed as being consistent with the teachings of the present application. Accordingly, the embodiments of the present application are not limited to only those embodiments explicitly described and depicted herein.

Claims

1. A low-voltage power distribution cabinet with a protection device comprises a cabinet body, wherein a plurality of electric devices are arranged in the cabinet body and are connected through electric wires, and the low-voltage power distribution cabinet is characterized in that a temperature detection device, a smoke detection device and a current detection device are also arranged in the cabinet body;

the temperature detection devices are mounted on the plurality of electric devices and used for acquiring temperature information of the plurality of electric devices, the smoke detection devices are mounted in the cabinet body and used for acquiring smoke concentration information in the cabinet body, and the current detection devices are mounted on the plurality of electric wires and used for acquiring current information of the plurality of electric wires;

the cabinet body is also internally provided with a heat dissipation device and a power supply device, the output end of the temperature detection device is electrically connected with a first control switch device, and the first control switch device is used for controlling the power supply device to supply power to the heat dissipation device according to the output signal of the temperature detection device;

the cabinet body is also provided with a second control switch device and an alarm, the output end of the temperature detection device, the output end of the smoke detection device and the output end of the current detection device are electrically connected with the second control switch device, and the second control switch device is used for controlling the power supply device to supply power to the alarm according to the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device.

2. The low-voltage power distribution cabinet with the protection device according to claim 1, wherein a processing device is further disposed in the cabinet body, and the temperature detection device comprises a temperature determination component and four temperature sensing components;

the temperature sensing part comprises a temperature sensor and a first comparator U1, the temperature sensing part is arranged on one electric device, the output end of the temperature sensor is electrically connected with the in-phase end of the first comparator U1, the inverting end of the first comparator U1 is electrically connected with a first reference voltage Vref1, and the output end of the first comparator U1 is electrically connected with the temperature judging part;

the temperature judgment piece further comprises two first or gates U2 and a second or gate U3, two input ends of one first or gate U2 are respectively and electrically connected with output ends of two first comparators U1, two output ends of two second or gates U3 are respectively and electrically connected with two input ends of a second or gate U3, and an output end of a second or gate U3 is electrically connected with the first control switch;

the first control switch comprises a first triode switch circuit which comprises a first NPN triode Q1, the output end of the second OR gate U3 is electrically connected with the base electrode of the first NPN triode Q1, and the first triode switch circuit is connected between the power supply device and the heat dissipation device in series.

3. The low-voltage power distribution cabinet with the protection device according to claim 2, wherein the heat dissipation device comprises a main air inlet pipe, a fan and a plurality of branch air pipes, the main air inlet pipe is arranged on the cabinet body in a penetrating manner, the fan is arranged in the main air inlet pipe, the length direction of the main air inlet pipe is parallel to the height direction of the cabinet body, the plurality of branch air pipes are arranged in the cabinet body, the plurality of branch air pipes are arranged on the main air inlet pipe in a penetrating manner, the length directions of the plurality of branch air pipes are perpendicular to the length direction of the main air inlet pipe, and the plurality of branch air pipes are arranged at different heights respectively;

the first triode switching circuit is connected in series between the power supply device and the fan.

4. The low-voltage distribution cabinet with the protection device according to claim 2 or 3, wherein the temperature sensing element further comprises a second comparator U4, the output end of the temperature sensor is electrically connected with the non-inverting end of the second comparator U4, and the inverting end of the second comparator U4 is electrically connected with a second reference voltage Vref 2;

the temperature judgment piece further comprises two third or gates U5 and a fourth or gate U6, two input ends of one third or gate U5 are electrically connected with output ends of two second comparators U4, and two output ends of two third or gates U5 are electrically connected with two input ends of a fourth or gate U6;

the smoke detection device comprises a smoke sensor and a third comparator U7, the output end of the smoke sensor is electrically connected with the in-phase end of the third comparator U7, and the inverting end of the third comparator U7 is electrically connected with a third reference voltage Vref 3;

the current detection device comprises four leakage inductors and a leakage judgment element, wherein each leakage inductor comprises a current transformer and a fourth comparator U8, the current transformer is sleeved on the wire, the output section of the current transformer is electrically connected with the in-phase end of the fourth comparator U8, the opposite-phase end of the fourth comparator U8 is electrically connected with a fourth reference voltage Vref4, the leakage judgment element comprises two fifth OR gates U9 and a sixth OR gate U10, two input ends of one fifth OR gate U9 are respectively and electrically connected with output ends of the two fourth comparators U8, and output ends of the two fifth OR gates U9 are respectively and electrically connected with two input ends of the sixth OR gate U10;

the second control switch is electrically connected with a total judgment piece and a switch piece, the output end of the fourth or gate U6, the output end of the third comparator U7 and the output end of the sixth or gate U10 are electrically connected with the total judgment piece, the output end of the total judgment piece is electrically connected with the switch piece, and the switch piece is connected in series between the power supply device and the alarm.

5. The low voltage distribution cabinet with the protection device according to claim 4, wherein the total judgment component comprises a seventh or gate U11 and an eighth or gate U12, an output terminal of the fourth or gate U6 is electrically connected to one input terminal of the seventh or gate U11, an output terminal of the third comparator U7 is electrically connected to the other input terminal of the seventh or gate U11, an output terminal of the seventh or gate U11 is electrically connected to one input terminal of the eighth or gate U12, an output terminal of the sixth or gate U10 is electrically connected to the other input terminal of the eighth or gate U12, and an output terminal of the eighth or gate U12 is electrically connected to the switch;

the switch device comprises a second triode switch circuit which comprises a second NPN triode Q2, the output end of the eighth OR gate U12 is electrically connected with the base electrode of the second NPN triode Q2, and the second triode switch circuit is connected between the power supply device and the alarm in series.

6. The low-voltage power distribution cabinet with the protection device according to claim 5, wherein a base is arranged at the bottom of the cabinet body, a groove is formed in the base, a floating seat is abutted to the base, the floating seat is connected with the groove through a waterproof film, one end of the waterproof film is arranged in the groove, and the other end of the waterproof film is connected with the floating seat;

the top of the cabinet body is provided with a wire outlet.

7. The low-voltage power distribution cabinet with the protection device according to any one of claims 1 to 3, wherein a processing device is further disposed in the cabinet body, and an output end of the temperature detection device, an output end of the smoke detection device and an output end of the current detection device are electrically connected to the processing device;

the processing equipment is used for sending prompt information to the mobile equipment according to at least one of the output signal of the temperature detection device, the output signal of the smoke detection device and the output signal of the current detection device.

8. The low-voltage power distribution cabinet with the protection device according to claim 7, wherein a cabinet door is further hinged to the cabinet body, and an electric control lock is further arranged on the cabinet body and used for locking the cabinet door;

the cabinet body is also provided with a human body induction part and an image acquisition part, and the human body induction part and the image acquisition part are electrically connected with the processing equipment;

the human body induction device is used for inducing a human body;

the processing equipment is used for controlling the image acquisition part to acquire a face image after the human body sensing device senses a human body;

the processing equipment is also used for carrying out authority verification based on the face image and controlling the electric control lock to be in an open state when the authority verification passes.

9. The low-voltage power distribution cabinet with the protection device according to claim 8, wherein the cabinet body is further provided with a light supplement piece, the light supplement piece comprises a plurality of monochromatic light sources, the cabinet body is further provided with a display screen, and the display screen is used for displaying a photo frame for indicating a user to align faces;

the processing equipment is used for lighting one of the plurality of monochromatic light sources after the human body sensing device senses a human body, controlling the display screen to display the photo frame and controlling the image acquisition part to acquire a human face image.

10. The low voltage power distribution cabinet with the protection device according to claim 9, wherein the processing device is further configured to adjust parameters of the picture frame based on the illuminated monochromatic light source, wherein the picture frame parameters include a ratio and an angle.