Safety monitoring device and method of electric energy meter for spot goods electricity purchase transaction

Abstract

The invention relates to a safety monitoring device and method of an electric energy meter for spot electricity purchase transaction, and belongs to the technical field of electricity markets. The safety monitoring device of the electric energy meter for the spot goods electricity purchase transaction comprises a mounting plate and a protective cover, the protective cover is fixedly connected to the surface of the mounting plate, a mounting cavity is formed in one end of the mounting plate, and safety monitoring equipment making contact with the protective cover is mounted in the mounting cavity; the whole safety monitoring equipment is arranged in the protective cover, so that the protective cover can actively separate the micro camera from external dust to ensure that the micro camera can shoot clearly, the safety monitoring effect on electricity stealing prevention of the electric energy meter is further improved, and when the protective cover is illegally taken down, the safety monitoring equipment is prevented from being damaged. At the moment, the colorless compressed gas in the U-shaped air bag is released and rapidly purges the transparent protection panel, and the shooting definition of the micro camera is further guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power market, and in particular to a safety monitoring device and method for electric energy meters used in spot electricity purchase transactions. Background Art

[0002] Electricity meters are crucial in spot electricity trading. They accurately measure electricity consumption, provide a fair settlement basis for transactions, and support dynamic market adjustments through real-time data. Big data analysis of smart meters helps market forecasting and optimization, promotes the precision of electricity sales strategies, and promotes users' rational use of electricity.

[0003] A Chinese patent discloses an anti-theft smart meter (authorization announcement number CN213149055U), which is provided with a pyroelectric infrared sensor inside a dustproof box, a controller on the top surface of the dustproof box, a camera is fixed to the top surface of a camera base through a camera bracket, and the camera base is fixed to the top surface of the dustproof box. When someone approaches the dustproof box, the pyroelectric infrared sensor senses and sends a signal to the microcontroller inside the controller, so that the camera can start shooting. When the person leaves the dustproof box, the pyroelectric infrared sensor disconnects the sensing signal and the microcontroller inside the controller does not receive it, so that the camera does not shoot outside, thereby cutting off power consumption and saving energy.

[0004] Since the above device installs the camera on the top surface of the dustproof box and the pyroelectric infrared sensor is arranged inside the dustproof box, the electricity thief only needs to block or damage the camera from a distance before stealing electricity. Moreover, since the camera is directly exposed to the outside, the dust floating in the air can easily cover and block the mirror of the camera, making it difficult to ensure that the camera can effectively shoot. Summary of the invention

[0005] Based on this, it is necessary to provide a safety monitoring device and method for an electric energy meter used for spot electricity purchase transactions in view of the problem that the safety monitoring device of the electric energy meter used for spot electricity purchase transactions is easily blocked or damaged.

[0006] A safety monitoring device for an electric energy meter used for spot electricity purchase transactions comprises a mounting plate and a protective cover, wherein the protective cover is fixedly connected to the surface of the mounting plate, an mounting cavity is provided at one end of the mounting plate, and a safety monitoring device in contact with the protective cover is installed inside the mounting cavity.

[0007] Furthermore, the security monitoring device includes a spring telescopic rod and a wireless controller, the spring telescopic rod is fixedly connected to the inside of the installation cavity, one end of the spring telescopic rod is in contact with the protective cover, the wireless controller is embedded and installed in the inside of the installation cavity, and the surface of the wireless controller is electrically connected to a first pressure switch and a miniature camera, the first pressure switch coincides with the spring telescopic rod, and the lens of the miniature camera is aligned with the opening of the installation cavity.

[0008] In one of the embodiments, a flexible triggering method is used to shoot, which eliminates the need to install equipment to continuously monitor people around, thereby achieving energy saving.

[0009] Furthermore, the security monitoring device also includes an auxiliary shooting mechanism, which includes a micro motor, the micro motor is fixedly connected to the inside of the installation cavity, the end of the micro motor output shaft is fixedly connected to a disk, the surface of the disk is provided with annular installation openings, a polarizer is embedded and installed inside the installation opening, two adjacent polarizers have different colors, and the lowest polarizer is arranged between the micro camera lens and the installation cavity opening.

[0010] In one embodiment, this enables the micro camera to take clear photos in different light scenes to meet the shooting needs in different environments.

[0011] Furthermore, the auxiliary shooting mechanism also includes a transparent protective panel, which is embedded and installed inside the opening of the installation cavity, and one end of the transparent protective panel is flush with the opening of the installation cavity.

[0012] In one of the embodiments, this can prevent external dust from entering the interior of the installation cavity, thereby improving the operating cleanliness of the micro camera.

[0013] Furthermore, the security monitoring equipment also includes a cleaning mechanism, which includes a round box fixedly connected between the micro motor and the disc, the inner side of the round box is rotatably connected to an air guide tube fixedly connected to the mounting plate, the surface of the air guide tube is provided with annularly distributed air guide channels, and the opening of the lowest air guide channel faces the transparent protective panel, the interior of the round box is fixedly connected to a U-shaped air bag, the interior of the U-shaped air bag is filled with sulfur-free odorant and compressed nitrogen, the interior of the air guide tube is fixedly connected to a mounting rod, and the surface of the mounting rod is fixedly connected to a cutter arranged inside the round box.

[0014] In one of the embodiments, this can, on the one hand, stimulate the surrounding lawless elements, and on the other hand, blow away the floating dust on the surface of the transparent protective panel, thereby improving the shooting clarity of the micro camera.

[0015] Furthermore, the number of the cutters is not less than five, and the cutting ends of the cutters face the U-shaped airbag.

[0016] In one embodiment, this can increase the tearing hole of the U-shaped airbag and accelerate the leakage rate of the gas inside the U-shaped airbag.

[0017] Furthermore, the auxiliary shooting mechanism also includes a trigger block and a second pressure switch distributed in a ring shape, the trigger block is fixedly connected to the surface of the disk, the trigger block, the polarizer and the center point of the disk are all arranged on the same straight line, the second pressure switch is electrically connected to the surface of the micro camera, and one end of the second pressure switch is in contact with the trigger block at the bottom.

[0018] In one of the embodiments, this can trigger the micro camera to take pictures in time when the polarizer completely covers the lens of the micro camera.

[0019] Furthermore, the cross-sectional shapes of the ends opposite to the trigger block and the second pressure switch are both arc-shaped.

[0020] In one embodiment, this can reduce the probability of the trigger block and the second pressure switch getting stuck together, so as to ensure that the trigger block and the second pressure switch can operate normally.

[0021] Furthermore, the spring telescopic rod includes a metal spring fixedly connected to the inside of the installation cavity, the metal spring is always in a compressed state, one end of the metal spring is fixedly connected to an L rod slidably connected to the installation cavity, one end of the L rod passes through the installation cavity and contacts the protective cover, and the first pressure switch partially overlaps with the L rod.

[0022] Furthermore, the security monitoring device also includes an electric push rod electrically connected to the surface of the wireless controller, the top of the electric push rod is fixedly connected to the installation cavity, and the end of the output shaft of the electric push rod is fixedly connected to a support plate, which is interlaced with the L rod at this time.

[0023] In one embodiment, the authorized person can actively resist the L-rod before opening the protective cover, so that the authorized person can open the protective cover without triggering the first pressure switch.

[0024] A method for safely monitoring an electric energy meter for spot electricity purchase transactions, the method comprising:

[0025] 1. When the protective cover is removed without authorization, the L rod triggers the first pressure switch, and the wireless controller controls the miniature camera to capture and record the scene in front of the mounting plate according to the safety program preset inside it, recording the lawbreakers;

[0026] 2. After the first pressure switch is triggered, the wireless controller drives the micro motor to continuously replace the polarizing filter at the micro camera lens according to the safety program preset inside it, so as to improve the shooting clarity of the micro camera;

[0027] 3. The micro motor rotates the round box synchronously, and the round box drives the U-shaped airbag to be cut. The compressed nitrogen gas carrying the sulfur-free odorant flows to the outside through the U-shaped airbag rupture and the air guide channel in turn, which stimulates the surrounding lawless elements on the one hand, and blows away the floating dust on the surface of the transparent protective panel on the other hand, improving the shooting clarity of the micro camera;

[0028] 4. Authorized personnel need to match and connect the external wireless device with the wireless controller, and control the electric push rod to extend through the external wireless device to drive the stop plate to press against the L rod to ensure that the L rod cannot trigger the first pressure switch after the protective cover is removed.

[0029] The above-mentioned safety monitoring device and method for the electric energy meter used for spot electricity purchase transactions place the safety monitoring device as a whole inside the protective cover, which enables the protective cover to actively separate the micro camera from external dust to ensure that the micro camera can take clear pictures, thereby improving the safety monitoring effect of the electric energy meter against electricity theft, and when the protective cover is illegally removed, the colorless compressed gas in the U-shaped airbag is released and quickly blows the transparent protective panel, further ensuring the shooting clarity of the micro camera;

[0030] A micro motor is used to drive the rotational power of the U-shaped airbag to drive polarizing filters of different colors to cover the micro camera in turn, which can filter the corresponding values ​​of reflection and glare and filter the corresponding stray light, making the micro camera shooting clearer and easier to investigate later. When the polarizing filter completely covers the lens of the micro camera, the trigger block also squeezes and triggers the second pressure switch to control the micro camera to take a picture under the cover of the corresponding polarizing filter, so as to ensure that the micro camera can take pictures in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0034] Figure 3 It is a structural schematic diagram of a partial cutout of the present invention;

[0035] Figure 4 It is a structural schematic diagram of the security monitoring device in the present invention;

[0036] Figure 5 for Figure 3 Schematic cross-sectional view along the AA direction;

[0037] Figure 6 for Figure 3 A cross-sectional schematic diagram along the BB direction;

[0038] Figure 7 for Figure 3 Schematic cross-sectional view along CC direction;

[0039] Figure 8 It is a schematic diagram of the explosion of the cleaning mechanism in the present invention.

[0040] Reference numerals:

[0041] 100, mounting plate; 110, mounting cavity; 200, protective cover; 300, security monitoring equipment; 310, spring telescopic rod; 311, metal spring; 312, L rod; 320, wireless controller; 330, first pressure switch; 340, micro camera; 350, auxiliary shooting mechanism; 351, micro motor; 352, disc; 3521, mounting port; 353, polarizing filter; 354, transparent protective panel; 355, trigger block; 356, second pressure switch; 360, cleaning mechanism; 361, round box; 362, air guide tube; 3621, air guide channel; 363, U-shaped air bag; 364, mounting rod; 365, cutter; 370, electric push rod; 380, stop plate. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.

[0047] Combine the following Figure 1 - Figure 8 The present invention describes a safety monitoring device and method for an electric energy meter used in spot electricity purchase transactions.

[0048] In one embodiment, a safety monitoring device for an electric energy meter for spot electricity purchase transactions includes a mounting plate 100 and a protective cover 200, wherein the protective cover 200 is fixedly connected to the surface of the mounting plate 100, and a mounting cavity 110 is provided at one end of the mounting plate 100, wherein a safety monitoring device 300 in contact with the protective cover 200 is installed inside the mounting cavity 110;

[0049] The installer first fixes the mounting plate 100 at the corresponding position with bolts, and then fixes the electric energy meter to the corresponding position of the mounting plate 100 with bolts, and then passes the wires connected to the electric energy meter through the protective cover 200 and electrically connects it to the electric energy meter, and then fixes the protective cover 200 to the corresponding position of the mounting plate 100 with bolts and covers the electric energy meter.

[0050] like Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the security monitoring device 300 includes a spring telescopic rod 310 and a wireless controller 320. The spring telescopic rod 310 is fixedly connected to the inside of the installation cavity 110, one end of the spring telescopic rod 310 is in contact with the protective cover 200, and the wireless controller 320 is embedded and installed in the inside of the installation cavity 110. The surface of the wireless controller 320 is electrically connected with a first pressure switch 330 and a miniature camera 340. The first pressure switch 330 coincides with the spring telescopic rod 310, and the lens of the miniature camera 340 is aligned with the opening of the installation cavity 110; the spring telescopic rod 310 includes a metal spring 311 fixedly connected to the inside of the installation cavity 110, the metal spring 311 is always in a compressed state, one end of the metal spring 311 is fixedly connected to an L rod 312 slidably connected to the installation cavity 110, one end of the L rod 312 passes through the installation cavity 110 and contacts with the protective cover 200, and the first pressure switch 330 partially coincides with the L rod 312.

[0051] When the criminals dismantle the protective cover 200 without authorization to the wireless controller 320, the protective cover 200 is separated from the L rod 312, and the metal spring 311 quickly pushes the L rod 312 outward. The L rod 312 presses the first pressure switch 330 in the process of moving outward along the installation cavity 110. The first pressure switch 330 transmits the internal preset instruction to the wireless controller 320. The wireless controller 320 controls the micro camera 340 to be turned on according to the security instruction corresponding to the instruction and preset in the internal thereof to shoot the criminals in front of the installation plate 100 for subsequent investigation. Since the security monitoring device 300 is arranged inside the protective cover 200 as a whole when not in use, the protective cover 200 can prevent external dust from covering and blocking the lens of the micro camera 340, and the micro camera 340 can be turned on only by elastic squeezing, which does not require the security monitoring device 300 to run continuously to achieve energy saving.

[0052] like Figure 4 , Figure 5 and Figure 6As shown, the security monitoring device 300 also includes an auxiliary shooting mechanism 350, which includes a micro motor 351, which is fixedly connected to the inside of the installation cavity 110, and a disk 352 is fixedly connected to the end of the output shaft of the micro motor 351. The surface of the disk 352 is provided with an annular installation opening 3521, and a polarizer 353 is embedded and installed inside the installation opening 3521. The colors of two adjacent polarizers 353 are different, and the lowermost polarizer 353 is arranged between the lens of the micro camera 340 and the opening of the installation cavity 110; the auxiliary shooting mechanism 350 also includes a transparent protective panel 354, and the transparent protective panel The plate 354 is embedded and installed on the inner side of the opening of the installation cavity 110, and one end of the transparent protective panel 354 is flush with the opening of the installation cavity 110; the auxiliary shooting mechanism 350 also includes a trigger block 355 and a second pressure switch 356 distributed in a ring shape, the trigger block 355 is fixedly connected to the surface of the disk 352, the trigger block 355, the polarizer 353 and the center point of the disk 352 are all set on the same straight line, the second pressure switch 356 is electrically connected to the surface of the micro camera 340, and one end of the second pressure switch 356 is in contact with the bottom trigger block 355; the cross-sectional shapes of the opposite ends of the trigger block 355 and the second pressure switch 356 are both arc-shaped.

[0053] The wireless controller 320 synchronously controls the rotation of the micro motor 351 during the execution of the preset safety program. The micro motor 351 drives the disk 352 to rotate. The disk 352 also drives all the polarizers 353 and the trigger block 355 to rotate. During this process, the polarizer 353 at the lens of the micro camera 340 is constantly replaced, which can filter the corresponding reflections and glare and the corresponding stray light, so that the micro camera 340 can shoot more clearly. When the polarizer 353 completely covers the lens of the micro camera 340, the trigger block 355 also squeezes and triggers the second pressure switch 356. The second pressure switch 356 controls the micro camera 340 to take a picture under the cover of the corresponding polarizer 353 according to the instructions preset inside it.

[0054] like Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, the security monitoring device 300 also includes a cleaning mechanism 360, which includes a round box 361 fixedly connected between the micro motor 351 and the disc 352, and the inner side of the round box 361 is rotatably connected to an air guide tube 362 fixedly connected to the mounting plate 100, and the surface of the air guide tube 362 is provided with an annularly distributed air guide channel 3621, and the opening of the lowermost air guide channel 3621 faces the transparent protective panel 354, and the inside of the round box 361 is fixedly connected to a U-shaped air bag 363, and the inside of the U-shaped air bag 363 is filled with sulfur-free odorant and compressed nitrogen, and the inside of the air guide tube 362 is fixedly connected to a mounting rod 364, and the surface of the mounting rod 364 is fixedly connected to a cutter 365 arranged inside the round box 361; the number of the cutters 365 is not less than five, and the cutting end of the cutter 365 faces the U-shaped air bag 363;

[0055] The micro motor 351 can drive the disc 352 to rotate through the round box 361, and the round box 361 drives the U-shaped air bag 363 to be cut, and the compressed nitrogen entrained with the sulfur-free odorant flows to the outside through the rupture of the U-shaped air bag 363 and the air guide channel 3621 in turn, which on the one hand stimulates the surrounding lawless elements, and on the other hand blows away the floating dust on the surface of the transparent protective panel 354, thereby improving the shooting clarity of the micro camera 340.

[0056] like Figure 4 and Figure 7 As shown, the security monitoring device 300 also includes an electric push rod 370 electrically connected to the surface of the wireless controller 320, the top of the electric push rod 370 is fixedly connected to the installation cavity 110, and the end of the output shaft of the electric push rod 370 is fixedly connected to a support plate 380, which is interlaced with the L rod 312 at this time.

[0057] Before the authorized personnel need to remove the protective cover 200, the authorized personnel need to use an external wireless device (the external wireless device here can be a wireless PLC, which is a programmable logic controller that integrates wireless communication technology. It can communicate and exchange data with sensors, actuators and other control systems through wireless signals without physical connection. It is a well-known technology familiar to those skilled in the art, so it is not drawn in the figure) to match and connect with the wireless controller 320, and control the electric push rod 370 to extend to drive the support plate 380 to resist the L rod 312 through the external wireless device to ensure that the L rod 312 cannot trigger the first pressure switch 330 after the protective cover 200 is removed.

[0058] like Figure 1-8 As shown, a method for safely monitoring an electric energy meter for spot electricity purchase transactions, the method for safely monitoring an electric energy meter for spot electricity purchase transactions comprising:

[0059] 1. When the protective cover 200 is removed without authorization, the L rod 312 triggers the first pressure switch 330, and the wireless controller 320 controls the micro camera 340 to capture and record the scene in front of the mounting plate 100 according to the security program preset therein, and records the lawbreakers;

[0060] 2. After the first pressure switch 330 is triggered, the wireless controller 320 drives the micro motor 351 to continuously replace the polarizing filter 353 at the lens of the micro camera 340 according to the safety program preset therein, so as to improve the shooting clarity of the micro camera 340;

[0061] 3. The micro motor 351 rotates the round box 361 synchronously, and the round box 361 drives the U-shaped air bag 363 to be cut, and the compressed nitrogen gas carrying the sulfur-free odorant flows to the outside through the cut of the U-shaped air bag 363 and the air guide channel 3621 in sequence, which stimulates the surrounding lawless elements on the one hand, and blows away the floating dust on the surface of the transparent protective panel 354 on the other hand, so as to improve the shooting clarity of the micro camera 340;

[0062] Fourth, the authorized personnel need to match and connect the wireless controller 320 through the external wireless device, and control the electric push rod 370 to extend to drive the support plate 380 to support the L rod 312 through the external wireless device to ensure that the L rod 312 cannot trigger the first pressure switch 330 after the protective cover 200 is removed.

[0063] It should be noted that the wireless controller 320, the first pressure switch 330, the micro camera 340, the micro motor 351, the polarizing filter 353 and the electric push rod 370 in the above description are all devices with relatively mature application of existing technologies. The specific models can be selected according to actual needs. At the same time, the wireless controller 320, the first pressure switch 330, the micro camera 340, the micro motor 351 and the electric push rod 370 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A safety monitoring device for an electric energy meter for spot electricity purchase transactions, comprising a mounting plate (100) and a protective cover (200), wherein the protective cover (200) is fixedly connected to the surface of the mounting plate (100), characterized in that: An installation cavity (110) is provided at one end of the installation plate (100), and a safety monitoring device (300) in contact with the protective cover (200) is installed inside the installation cavity (110); The security monitoring device (300) comprises a spring telescopic rod (310) and a wireless controller (320), wherein the spring telescopic rod (310) is fixedly connected to the inside of the installation cavity (110), one end of the spring telescopic rod (310) is in contact with the protective cover (200), and the wireless controller (320) is embedded and installed in the inside of the installation cavity (110), and the surface of the wireless controller (320) is electrically connected to a first pressure switch (330) and a miniature camera (340), the first pressure switch (330) overlaps with the spring telescopic rod (310), and the lens of the miniature camera (340) is aligned with the opening of the installation cavity (110).

2. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 1, characterized in that: The security monitoring device (300) further comprises an auxiliary shooting mechanism (350), wherein the auxiliary shooting mechanism (350) comprises a micro motor (351), wherein the micro motor (351) is fixedly connected to the inside of the mounting cavity (110), wherein the end of the output shaft of the micro motor (351) is fixedly connected to a disk (352), wherein the surface of the disk (352) is provided with mounting openings (3521) distributed in a ring shape, wherein a polarizing filter (353) is embedded and installed inside the mounting opening (3521), wherein two adjacent polarizing filters (353) have different colors, and the lowest polarizing filter (353) is arranged between the lens of the micro camera (340) and the opening of the mounting cavity (110).

3. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 2, characterized in that: The auxiliary shooting mechanism (350) further comprises a transparent protective panel (354), wherein the transparent protective panel (354) is embedded and installed inside the opening of the installation cavity (110), and one end of the transparent protective panel (354) is flush with the opening of the installation cavity (110).

4. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 3, characterized in that: The safety monitoring device (300) further comprises a cleaning mechanism (360), the cleaning mechanism (360) comprising a round box (361) fixedly connected between the micro motor (351) and the disc (352), the inner side of the round box (361) being rotatably connected to an air guide tube (362) fixedly connected to the mounting plate (100), the surface of the air guide tube (362) being provided with annularly distributed air guide channels (3621), the lowermost opening of the air guide channel (3621) facing the transparent protective panel (354), the interior of the round box (361) being fixedly connected to a U-shaped air bag (363), the interior of the U-shaped air bag (363) being filled with sulfur-free odorant and compressed nitrogen, the interior of the air guide tube (362) being fixedly connected to a mounting rod (364), the surface of the mounting rod (364) being fixedly connected to a cutter (365) arranged inside the round box (361).

5. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 4, characterized in that: The number of the cutters (365) is not less than five, and the cutting ends of the cutters (365) face the U-shaped airbag (363).

6. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 2, characterized in that: The auxiliary shooting mechanism (350) further comprises a trigger block (355) and a second pressure switch (356) which are distributed in a ring shape. The trigger block (355) is fixedly connected to the surface of the disk (352). The center points of the trigger block (355), the polarizing filter (353) and the disk (352) are all arranged on the same straight line. The second pressure switch (356) is electrically connected to the surface of the micro camera (340). One end of the second pressure switch (356) contacts the trigger block (355) at the bottom.

7. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 6, characterized in that: The cross-sectional shapes of the opposite ends of the trigger block (355) and the second pressure switch (356) are both arc-shaped.

8. The safety monitoring device for electric energy meters used for spot electricity purchase transactions according to claim 1 is characterized in that: The spring telescopic rod (310) comprises a metal spring (311) fixedly connected to the inside of the installation cavity (110); the metal spring (311) is always in a compressed state; one end of the metal spring (311) is fixedly connected to an L rod (312) slidably connected to the installation cavity (110); one end of the L rod (312) passes through the installation cavity (110) and contacts the protective cover (200); the first pressure switch (330) partially overlaps with the L rod (312).

9. A safety monitoring device for electric energy meters for spot electricity purchase transactions according to claim 8, characterized in that: The security monitoring device (300) further comprises an electric push rod (370) electrically connected to the surface of the wireless controller (320), the top of the electric push rod (370) being fixedly connected to the mounting cavity (110), the end of the output shaft of the electric push rod (370) being fixedly connected to a support plate (380), and the support plate (380) is interlaced with the L rod (312) at this time.

10. A method for safety monitoring of an electric energy meter for spot electricity purchase transactions, comprising a safety monitoring device for an electric energy meter for spot electricity purchase transactions as claimed in any one of claims 1 to 9, characterized in that: The method for safely monitoring an electric energy meter for spot electricity purchase transactions comprises:

1. When the protective cover (200) is removed without authorization, the L rod (312) triggers the first pressure switch (330), and the wireless controller (320) controls the micro camera (340) to capture and record the scene in front of the mounting plate (100) according to the security program preset therein, and records the illegal elements; 2. After the first pressure switch (330) is triggered, the wireless controller (320) drives the micro motor (351) according to a safety program preset inside the wireless controller (320) to continuously replace the polarizing filter (353) at the lens of the micro camera (340), thereby improving the shooting clarity of the micro camera (340); 3. The micro motor (351) rotates the round box (361) synchronously, and the round box (361) drives the U-shaped air bag (363) to be cut, and the compressed nitrogen gas carrying the sulfur-free odorant flows to the outside through the cut of the U-shaped air bag (363) and the air guide channel (3621) in sequence, which not only stimulates the surrounding lawless elements, but also blows away the floating dust on the surface of the transparent protective panel (354), thereby improving the shooting clarity of the micro camera (340); Fourth, the authorized personnel need to match and connect the external wireless device with the wireless controller (320), and control the electric push rod (370) to extend through the external wireless device to the wireless controller (320) to drive the abutment plate (380) to abut against the L rod (312), so as to ensure that the L rod (312) cannot trigger the first pressure switch (330) after the protective cover (200) is removed.

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