An electric energy meter convenient for time calibration and electric energy meter time calibration method

Abstract

The present invention discloses an electric energy meter and an electric energy meter time calibration method that are convenient for time calibration, and relates to the field of electric energy meters, including a main housing, a cover housing is provided on the end face of the main housing, a wiring cavity is provided at the bottom of the main housing, a wiring port is provided inside the wiring cavity, a protective bottom cover is provided at the bottom of the cover housing, and a wire clamping mechanism is provided at the bottom of the protective bottom cover; a limiting mechanism is provided at the bottom of both sides of the main housing, a heat dissipation mechanism is provided at the top of both sides of the main housing, a folding cover is provided at the bottom of the end face of the cover housing, and a display control panel is provided at the top of the end face of the cover housing; a communication time calibration mechanism is provided at the top of the main housing and the cover housing. The present invention realizes efficient and accurate communication time calibration of the electric energy meter by adopting a communication time calibration mechanism, can ensure the stable connection between the electric energy meter and modules such as edge servers and GPS receiving chips, thereby improving the accuracy of time calibration, and can remotely regulate the time management and synchronization of all electric energy meters in a region in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy meters, and in particular to an electric energy meter that is convenient for time calibration and a method for calibrating the electric energy meter. Background Art

[0002] The energy meter is a key device in the power system, used to measure and record the consumption of electric energy, bill users, and play an important role in the power system. The calibration of the energy meter is the process of ensuring the accuracy of the energy meter clock, which has far-reaching significance. The accurate energy meter clock is crucial for the correct measurement of energy usage, directly affecting the user's electricity bills, and also affecting the power company's monitoring and management of the power grid. The main purpose of the energy meter calibration is to maintain fair billing, reasonable electricity consumption analysis, and power system balance, thereby enhancing the trust relationship between users and power companies and improving the efficiency and reliability of the power grid.

[0003] In the time calibration of electric energy meters, modern technology provides a variety of innovative and efficient time calibration methods. First, Global Positioning System (GPS) synchronization is a widely used technology. By connecting to the satellite network, the electric energy meter can obtain high-precision time information to ensure that the clock is synchronized with the global standard time. Secondly, the Network Time Protocol (NTP) is also a common time calibration technology. By connecting to the Internet, the electric energy meter can obtain accurate time data and realize remote time calibration. Wireless communication technology is also widely used. The electric energy meter can communicate with other devices to receive time calibration signals to ensure the accuracy of the clock.

[0004] Although the existing time-keeping technology has made significant progress in improving the accuracy of the electric energy meter clock, there are still some shortcomings. First, for wireless communication technology under certain environmental conditions, such as deep areas inside buildings or in high-density cities, there may be problems with signal interference and limited coverage, which will affect the accuracy of time-keeping; secondly, for some remote areas or places that are not convenient for networking, there may still be difficult-to-solve communication problems, which will limit the time-keeping effect. The reason for these problems is that the electric energy meter itself has poor communication capabilities and insufficient signal processing capabilities. In addition, in terms of the structure of the electric energy meter, such as heat dissipation problems, wiring and wiring problems, and installation problems. In different scenarios, the electric energy meter may face challenges such as insufficient heat dissipation, difficult installation and debugging, and high difficulty in maintenance, which will affect the daily operation and maintenance of the electric energy meter itself.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0006] In view of the problems in the related art, the present invention proposes an electric energy meter that is easy to calibrate and an electric energy meter time calibration method thereof, so as to overcome the above-mentioned technical problems existing in the existing related art.

[0007] To this end, the specific technical solution adopted by the present invention is as follows:

[0008] According to one aspect of the present invention, there is provided an electric energy meter which is convenient for time calibration, comprising a main shell body, a cover shell body being arranged on the end face of the main shell body, a wiring cavity being opened on the bottom end of the main shell body, a wiring port being arranged inside the wiring cavity, a protective bottom cover being arranged on the bottom of the cover shell body, and a wire clamping mechanism being arranged on the bottom inside the protective bottom cover; limiting mechanisms are arranged on the bottom of both sides of the main shell body, heat dissipation mechanisms are arranged on the top of both sides of the main shell body, a folding cover is arranged on the bottom of the end face of the cover shell body, and a display and control panel is arranged on the top of the end face of the cover shell body; communication time calibration mechanisms are arranged on the top of the main shell body and the cover shell body.

[0009] Furthermore, in order to achieve a stable connection between the main shell, the cover shell and the protective bottom cover, and to allow the cable conductors to pass through the wire arc opening, snap-in grooves are provided on both sides of the bottom of the cover shell and the bottom of the main shell, a top ring snap-in strip matching the snap-in groove is provided on the inner side of the top of the protective bottom cover, and a wire arc opening is provided on the inner side of the bottom of the protective bottom cover; an installation hanging opening is provided on the top of the back side of the main shell.

[0010] Furthermore, in order to realize the opening and closing of the internal wire management clamp by means of a hand-pinch button, the cable conductors are independently clamped and combed during the installation process, the wiring inside the electric energy meter is effectively managed, the connection is ensured to be firm and orderly, and the surface cables are cluttered, thereby improving the accuracy of the electric energy meter, the wire clamping mechanism includes a plurality of fixed rods arranged at the bottom of the protective bottom cover, the top and bottom of one end of the fixed rod are provided with a cross fixed axis, the outer side of the circumference of the cross fixed axis is provided with a cross shaft sleeve, a wire management clamp is provided on one side of the cross shaft sleeve, and a cross connecting rod is provided on the other side of the cross shaft sleeve. A guide sleeve is provided at the end away from the cable management clip; buttons are interspersed at the bottom of both sides of the protective bottom cover, a transverse push rod is provided at the inner top of the button on one side, a guide column corresponding to the guide sleeve is provided at the bottom of the transverse push rod, the button is a C-shaped structure and a pressing spring is provided between the outer wall of the protective bottom cover; a transverse push rod is provided at the inner bottom of the button on the other side, and the transverse push rod located at the bottom is in opposite direction to the transverse push rod structure located at the top; the two cable management clips located above and below the same fixed rod have opposite opening directions, and each transverse push rod only cooperates with the cable management clip with the same opening direction.

[0011] Furthermore, in order to limit and fix the bottom protective bottom cover through the lifting control of the lifting lock plate, and the operation is simple, which can improve the flexibility and portability of installation, the limiting mechanism includes limiting slide rails arranged at the bottom of both sides of the main shell body, and a lifting lock plate is arranged inside the limiting slide rail and maintains a movable connection, the bottom of the lifting lock plate is an arc structure, and a spring seat is arranged on the top of the lifting lock plate, and handle seats are arranged on both sides of the main shell body and above the limiting slide rails, and an adjusting handle is arranged inside the handle seat, and a connecting cross bar is arranged inside the adjusting handle, and a tension spring is arranged between the connecting cross bar and the spring seat, and limiting lock boxes matching the lifting lock plate are arranged on the top of both sides of the protective bottom cover.

[0012] Furthermore, in order to improve the heat dissipation performance of the electric energy meter, the temperature inside the electric energy meter is reduced through effective ventilation and heat dissipation to maintain the stability and life of the components, the heat dissipation mechanism includes a ventilation sleeve inserted into the two side walls of the main shell, a flared net is arranged inside the ventilation sleeve, an exhaust fan is arranged inside the flared net, and a protective ceiling is arranged on the top of the outer side of the ventilation sleeve. The flared net has a radial structure, and the diameter increases from the inner circle to the outer circle; the protective ceiling is a semi-arc bucket-shaped structure.

[0013] Furthermore, in order to be able to establish wireless communication connection with an external communication system, realize signal acquisition and analysis, and finally realize the time calibration function, the communication calibration mechanism includes two semicircular externally threaded bottom columns arranged at the top of the main shell and the top of the cover shell, and the top of the main shell and the top of the cover shell are also provided with internal column sleeves and wire holes, a shielding shell is arranged at the top of the internal column sleeve, a wire terminal matching the wire hole is arranged at the bottom of the shielding shell, and a communication circuit board is arranged at the top of the shielding shell; an antenna top cover is arranged at the top of the externally threaded bottom column, the outer edge of the bottom of the antenna top cover is an externally threaded structure, and a positioning column is arranged on one side of the bottom of the antenna top cover, and a positioning groove matching the positioning column is arranged on one side of the top of the externally threaded bottom column, and a connecting threaded tube is arranged on the outer side of the circumference of the externally threaded bottom column and the antenna top cover.

[0014] Furthermore, the communication circuit board includes an edge networking module, a GPS receiving chip, a level conversion chip and a time writing chip;

[0015] Among them, the edge networking module is used as a network terminal to establish a wireless communication connection with the edge server and form an edge network with other electric energy meters to realize time information sharing;

[0016] A GPS receiving chip, used for receiving GPS signals through the antenna top cover and transmitting the real-time received GPS signals to the level conversion chip;

[0017] The level conversion chip is used to decode the GPS signal, realize the conversion of protocol format and level, and then transmit it to the timing writing chip via serial communication;

[0018] The time writing chip is used to obtain the time information contained in the GPS signal and write the time information to the corresponding clock module through verification and memory writing;

[0019] The edge networking module is connected to the GPS receiving chip, the level conversion chip and the timing writing chip in sequence.

[0020] Furthermore, an electric energy meter circuit board is arranged inside the main housing, and the electric energy meter circuit board includes a core processing module, a billing module, a storage module, a clock module, a power module, an output module and a safety application module;

[0021] Among them, the core processing module is used to perform calculations, control and manage the power detection process;

[0022] The billing module is used to measure the electric energy parameters in real time, including active power, reactive power, voltage, current, line frequency and zero-crossing interruption, to bill the electric energy usage, and to control the circuit breaker to switch the electric energy on and off through the output signal in the meter;

[0023] A storage module, used to record and store the accumulated data during the electric energy detection process;

[0024] The clock module is used to achieve accurate timing in a wide temperature range, set the clock and calendar through the time calibration data, and continue to keep time by its own oscillation, calculating the time period to which the current moment belongs;

[0025] The power module is used to integrate the four parts of voltage transformation, distillation, filtering and voltage stabilization, reduce the number and amplitude of interference pulses, and provide power supply;

[0026] An output module, used to output the detection results of the electric energy meter to the client;

[0027] Security application module, used to provide dedicated network conditions, integrating identity authentication, data encryption, decryption, secure storage and communication confidentiality security protection functions;

[0028] The core processing module is connected with the billing module, storage module, clock module, power module, output module and security application module respectively.

[0029] According to another aspect of the present invention, there is also provided a method for calibrating time of an electric energy meter, the method comprising the following steps:

[0030] S1. The electric energy meter establishes an edge network with other electric energy meters through the edge networking module to realize the communication and sharing of time information in the region, and establishes a wireless communication connection with the edge server;

[0031] S2. While establishing a communication connection with the power service network, the edge server sends a clock calibration signal to the power meter terminal via a GPS signal;

[0032] S3, the electric energy meter receives the GPS signal through its own GPS receiving chip and level conversion chip, decodes and converts it, realizes the reading of time information, and then writes it into the storage module and the clock module;

[0033] S4. Several electric energy meters in the edge network perform time correction by sharing time information, and adopt the principle of minority obeys majority to achieve time synchronization and unification in the region.

[0034] The beneficial effects of the present invention are:

[0035] 1. By adopting the communication time calibration mechanism, efficient and accurate communication time calibration of the electric energy meter is realized, which can ensure the stable connection between the electric energy meter and the edge server, GPS receiving chip and other modules, thereby improving the accuracy of the time calibration. The time management and synchronization of all electric energy meters in a region can be remotely controlled in real time, effectively reducing the manual workload and ensuring the normal and stable operation of the power network.

[0036] 2. The design of the wire clamping mechanism adopts components such as cross-fixed axes, cross-axle sleeves, and wire management clamps, which effectively solves the problem of internal wiring and management of the electric energy meter and improves the accuracy and reliability of electric energy measurement. At the same time, the limit mechanism realizes the flexible adjustment and installation of the electric energy meter through lifting and lowering lock plates, adjusting handles, connecting cross bars and other components, solves the installation problem, and improves the adaptability of the electric energy meter in different environments.

[0037] 3. By setting up the ventilation sleeve, flared net, exhaust fan and other designs of the heat dissipation mechanism, the heat dissipation performance of the electric energy meter is effectively improved, the temperature is reduced, and the stability and life of the circuit components are increased. The overall structure of the electric energy meter has been carefully designed, including the protective bottom cover, folding cover, display and control panel, etc., making the electric energy meter more durable and safe in the external environment, and easy for users to observe and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 is a schematic diagram of the front structure of an electric energy meter that is convenient for time calibration according to an embodiment of the present invention;

[0040] Figure 2 is a schematic diagram of the back structure of an electric energy meter that is convenient for time calibration according to an embodiment of the present invention;

[0041] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0042] Figure 4 This is one of the partial structural schematic diagrams of an electric energy meter that is convenient for time calibration according to an embodiment of the present invention;

[0043] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0044] Figure 6 yes Figure 4 A partial enlarged view of point C in the middle;

[0045] Figure 7 This is a second partial structural schematic diagram of an electric energy meter that is convenient for time calibration according to an embodiment of the present invention;

[0046] Figure 8 yes Figure 7 A partial enlarged view of point D in the middle;

[0047] Fig. 9 It is a schematic diagram of the internal structure of a protective bottom cover of an electric energy meter that is convenient for time calibration according to an embodiment of the present invention;

[0048] Fig.10 yes Fig. 9 A partial enlarged view of point E in the middle;

[0049] Fig.11 The present invention is a flowchart of a method for calibrating time of an electric energy meter according to an embodiment of the present invention.

[0050] In the figure:

[0051] 1. Main housing; 2. Cover housing; 3. Wiring cavity; 4. Wiring port; 5. Protective bottom cover; 6. Wire clamping mechanism; 601. Fixed rod; 602. Cross fixed axis; 603. Cross shaft sleeve; 604. Wire management clamp; 605. Cross connecting rod; 606. Guide sleeve; 607. Button; 608. Horizontal push rod; 609. Guide column; 610. Press spring; 7. Limiting mechanism; 701. Limiting slide rail; 702. Lifting lock plate; 703. Spring seat; 704. Handle seat; 705. Adjusting handle; 706. Connecting cross bar; 707. Tension spring; 708. Limiting lock buckle Box; 8. heat dissipation mechanism; 801. ventilation sleeve; 802. expansion net; 803. exhaust fan; 804. protective ceiling; 9. folding cover; 10. display control panel; 11. communication timing mechanism; 1101. external threaded bottom column; 1102. internal column sleeve; 1103. wire hole; 1104. shielding shell; 1105. wire terminal; 1106. communication circuit board; 1107. antenna top cover; 1108. positioning column; 1109. positioning groove; 1110. connecting threaded tube; 12. snap-in slide groove; 13. top ring snap-in strip; 14. wire arc opening; 15. installation hanging opening. DETAILED DESCRIPTION

[0052] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0053] According to one embodiment of the present invention, an electric energy meter and an electric energy meter time calibration method are provided. The present invention is further described in conjunction with the accompanying drawings and specific embodiments. Figure 1-Figure 10 As shown, the electric energy meter that is convenient for time calibration according to an embodiment of the present invention includes a main shell 1, a cover shell 2 is arranged on the end face of the main shell 1, a wiring cavity 3 is opened at the bottom end of the main shell 1, a wiring port 4 is arranged inside the wiring cavity 3, a protective bottom cover 5 is arranged at the bottom of the cover shell 2, and a wire clamping mechanism 6 is arranged at the bottom of the protective bottom cover 5; limiting mechanisms 7 are arranged at the bottom of both sides of the main shell 1, heat dissipation mechanisms 8 are arranged at the top of both sides of the main shell 1, a folding cover 9 is arranged at the bottom of the end face of the cover shell 2, and a display control panel 10 is arranged at the top of the end face of the cover shell 2; communication time calibration mechanisms 11 are arranged at the top of the main shell 1 and the cover shell 2.

[0054] For the above technical solution, by adopting the communication time calibration mechanism 11, efficient and accurate communication time calibration of the electric energy meter is realized, which can ensure the stable connection between the electric energy meter and the edge server, GPS receiving chip and other modules, thereby improving the accuracy of the time calibration, and can remotely control the time management and synchronization of all electric energy meters in a region in real time, effectively reducing the input of manual workload and ensuring the normal and stable operation of the power network. By setting the heat dissipation mechanism 8, the heat dissipation performance of the electric energy meter is effectively improved, the temperature is reduced, and the stability and life of the circuit components are improved. The overall structure of the electric energy meter is carefully designed, including the protective bottom cover 5, the folding cover 9, the display control panel 10, etc., so that the electric energy meter is more durable and safe in the external environment, and is convenient for users to observe and operate.

[0055] In one embodiment, for the above-mentioned cover shell 2, a snap-in groove 12 is provided on both sides of the bottom of the cover shell 2 and the bottom of the main shell 1, a top ring snap-in strip 13 matching the snap-in groove 12 is provided on the inner side of the top of the protective bottom cover 5, and a wire-passing arc opening 14 is provided on the inner side of the bottom of the protective bottom cover 5; an installation hanging opening 15 is provided on the top of the back side of the main shell 1, so as to realize a stable connection between the main shell 1, the cover shell 2 and the protective bottom cover 5, and the wire-passing arc opening 14 allows the cable conductor to pass through.

[0056] In one embodiment, for the above-mentioned wire clamping mechanism 6, the wire clamping mechanism 6 includes a plurality of fixed rods 601 arranged at the inner bottom of the protective bottom cover 5, and a cross fixed shaft 602 is arranged at the top and bottom of one end of the fixed rod 601, and a cross shaft sleeve 603 is sleeved on the outer side of the circumference of the cross fixed shaft 602, and a wire management clamp 604 is arranged on one side of the cross shaft sleeve 603, and a cross connecting rod 605 is arranged on the other side of the cross shaft sleeve 603, and a guide sleeve 606 is arranged at one end of the cross connecting rod 605 away from the wire management clamp 604; buttons 607 are interspersed at the bottom of both sides of the protective bottom cover 5, and a lateral push rod 608 is arranged on the inner top of one side of the button 607, and a guide column 609 corresponding to the guide sleeve 606 is arranged at the bottom of the lateral push rod 608, and the button The button 607 is a C-shaped structure and a pressing spring 610 is arranged between the outer wall of the protective bottom cover 5; a transverse push rod 608 is arranged on the inner bottom of the button 607 on the other side, and the transverse push rod 608 located at the bottom has an opposite structural direction to the transverse push rod 608 located at the top; the two wire management clips 604 located above and below the same fixed rod 601 have opposite opening directions, and each transverse push rod 608 only cooperates with the wire management clip 604 with the same opening direction, so that the internal wire management clip 604 can be opened and closed by pinching the button 607 by hand, and the cable conductors can be independently clamped and combed during the installation process, effectively managing the wiring inside the electric energy meter, ensuring a firm and orderly connection, and eliminating cluttered cables on the surface, thereby improving the accuracy of the electric energy meter.

[0057] Working principle of the wire clamping mechanism 6: buttons 607 are inserted at the bottom of both sides of the protective bottom cover 5. The buttons 607 are C-shaped, and the inner bottom and top both penetrate the protective bottom cover 5. The pressing spring 610 arranged between the protective bottom cover 5 and the button 607 provides an outward elastic force. When manually pressing inward, the length of the pressing spring 610 will change, so that the horizontal push rod 608 moves to one side. Since the back of each wire clip 604 is connected to a guide sleeve 606 through a cross connecting rod 605, and the guide sleeve 606 is offset in angle by the movement of the guide column 609, it also drives the wire clip 604 to rotate around the cross fixed axis 602. Because each fixed rod 601 has a wire clip 604 on the top and bottom and the opening directions are opposite, the wire clip 604 can adjust the opening under the action of the horizontal push rods 608 on both sides, which is convenient for clamping and combing the cable conductors during the installation process of the protective bottom cover 5.

[0058] In one embodiment, for the above-mentioned limiting mechanism 7, the limiting mechanism 7 includes limiting slide rails 701 arranged at the bottom of both sides of the main shell 1, and a lifting lock plate 702 is arranged inside the limiting slide rail 701 and maintains a movably connected state. The bottom of the lifting lock plate 702 is an arc-shaped structure, and a spring seat 703 is arranged on the top of the lifting lock plate 702. Handle seats 704 are arranged on both sides of the main shell 1 and above the limiting slide rails 701. An adjusting handle 705 is arranged inside the handle seat 704, and a connecting cross bar 706 is arranged inside the adjusting handle 705. A tension spring 707 is arranged between the connecting cross bar 706 and the spring seat 703. Limiting lock boxes 708 that cooperate with the lifting lock plate 702 are arranged on the top of both sides of the protective bottom cover 5, so that the bottom protective bottom cover 5 is limited and fixed by controlling the lifting and lowering of the lifting lock plate 702, and the operation is simple, which can improve the flexibility and portability of installation.

[0059] Working principle of the limiting mechanism 7: the lifting lock plate 702 performs vertical lifting movement in the limiting slide rail 701, and can move downward to the limiting lock box 708 on both sides of the protective bottom cover 5, at which time the adjustment handle 705 is located at the bottom. When it is necessary to make the lifting lock plate 702 leave the limiting lock box 708, it is only necessary to manually bend the adjustment handle 705 upward, and under the action of the tension spring 707, the lifting lock plate 702 will move upward together, and when the adjustment handle 705 rotates to the highest point, the tension spring 707 pulls the lifting lock plate 702 to the highest point, and at this time the protective bottom cover 5 can be taken out or installed. Conversely, by bending the adjustment handle 705 downward, the lifting lock plate 702 can be reinserted into the limiting lock box 708.

[0060] In one embodiment, for the above-mentioned heat dissipation mechanism 8, the heat dissipation mechanism 8 includes a ventilation sleeve 801 inserted into the two side walls of the main shell 1, a flared net 802 is arranged inside the ventilation sleeve 801, an exhaust fan 803 is arranged inside the flared net 802, and a protective ceiling 804 is arranged on the top of the outer side of the ventilation sleeve 801. The flared net 802 has a radial structure, and the diameter increases from the inner circle to the outer circle; the protective ceiling 804 is a semi-arc bucket-shaped structure, which can help the heat dissipation performance of the electric energy meter, reduce the temperature inside the electric energy meter through effective ventilation and heat dissipation, and maintain the stability and life of the components.

[0061] In one embodiment, for the above-mentioned communication timing mechanism 11, the communication timing mechanism 11 includes two semicircular external threaded bottom columns 1101 arranged at the top of the main housing 1 and the top of the cover housing 2, and the top of the main housing 1 and the top of the cover housing 2 are also provided with an internal column sleeve 1102 and a wire hole 1103, and a shielding shell 1104 is arranged at the top of the internal column sleeve 1102, and a wire terminal 1105 matching the wire hole 1103 is arranged at the bottom of the shielding shell 1104, and a communication circuit board 1106 is arranged at the top of the shielding shell 1104; An antenna top cover 1107 is arranged at the top of the externally threaded bottom column 1101, the outer edge of the bottom of the antenna top cover 1107 is an externally threaded structure, and a positioning column 1108 is arranged on one side of the bottom of the antenna top cover 1107, and a positioning groove 1109 matching with the positioning column 1108 is arranged on one side of the top of the externally threaded bottom column 1101. A connecting threaded tube 1110 is sleeved on the outer side of the circumference of the externally threaded bottom column 1101 and the antenna top cover 1107, so that wireless communication connection with an external communication system can be achieved, signal acquisition and analysis can be realized, and finally the time calibration function is realized.

[0062] In one embodiment, for the above-mentioned communication circuit board 1106, the communication circuit board 1106 includes an edge networking module, a GPS receiving chip, a level conversion chip and a timing writing chip (all shown in the above-mentioned module diagrams);

[0063] The edge networking module is used as a network terminal to establish a wireless communication connection with the edge server and form an edge network with other electric energy meters to realize time information sharing;

[0064] The GPS receiving chip is used to receive GPS signals through the antenna top cover 1107 and transmit the real-time received GPS signals to the level conversion chip;

[0065] The level conversion chip is used to decode the GPS signal, realize the conversion of the protocol format and level, and then transmit it to the time calibration writing chip via serial communication;

[0066] The time calibration writing chip is used to obtain the time information contained in the GPS signal, and write the time information to the corresponding clock module by means of verification and memory writing;

[0067] The edge networking module is connected to the GPS receiving chip, the level conversion chip and the timing writing chip in sequence.

[0068] In one embodiment, for the main housing 1, an electric energy meter circuit board is arranged inside the main housing 1, and the electric energy meter circuit board includes a core processing module, a billing module, a storage module, a clock module, a power module, an output module and a safety application module (the above modules are all shown in the figure);

[0069] Wherein, the core processing module is used to perform calculation, control and management of the power detection process;

[0070] The billing module is used to measure the electric energy parameters in real time, including active power, reactive power, voltage, current, line frequency and zero-crossing interruption, to bill the electric energy usage, and to control the circuit breaker to turn on and off the electric energy through the output signal in the meter;

[0071] The storage module is used to record and store the accumulated data during the electric energy detection process;

[0072] The clock module is used to achieve accurate timing in a wide temperature range, set the clock and calendar through time calibration data, and continue to keep time by relying on its own oscillation to calculate the time period to which the current moment belongs;

[0073] The power supply module is used to integrate the four parts of voltage transformation, distillation, filtering and voltage stabilization, reduce the number and amplitude of interference pulses, and provide power supply;

[0074] The output module is used to output the detection result of the electric energy meter to the client;

[0075] The security application module is used to provide dedicated network conditions and integrate security protection functions such as identity authentication, data encryption, decryption, secure storage and communication confidentiality;

[0076] The core processing module is connected to the billing module, the storage module, the clock module, the power module, the output module and the security application module respectively.

[0077] According to another embodiment of the present invention, there is also provided a method for calibrating time of an electric energy meter, the method comprising the following steps:

[0078] S1. The electric energy meter establishes an edge network with other electric energy meters through the edge networking module to realize the communication and sharing of time information in the region, and establishes a wireless communication connection with the edge server;

[0079] S2. While establishing a communication connection with the power service network, the edge server sends a clock calibration signal to the power meter terminal via a GPS signal;

[0080] S3, the electric energy meter receives the GPS signal through its own GPS receiving chip and level conversion chip, decodes and converts it, realizes the reading of time information, and then writes it into the storage module and the clock module;

[0081] S4. Several electric energy meters in the edge network perform time correction by sharing time information, and adopt the principle of minority obeys majority to achieve time synchronization and unification in the region.

[0082] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0083] In actual application, the electric energy meter is installed at the desired position, and the power supply and circuit are connected through the wiring cavity 3 and the wiring port 4 at the bottom of the main housing to ensure orderly connection. The protective bottom cover 5 is installed by adjusting the limit mechanism 7, and the internal temperature is kept within a safe range by the heat dissipation mechanism 8. The wire clamping mechanism 6 is responsible for orderly connecting the wires. Through the folding cover 9 and the display control panel 10 at the bottom of the cover housing 2, the user can easily view the electric energy parameters and set them. The communication time calibration mechanism 11 realizes the communication and time calibration functions through the top of the main housing 1 and the cover housing 2. The stable operation of the entire system also benefits from the support of structures such as the protective bottom cover 5, the installation hanging port 15, the button 607, and the limit lock box 708. The communication circuit board realizes the communication and time calibration functions with the outside through the edge networking module, the GPS receiving chip, the level conversion chip and the time calibration writing chip. The electric energy meter circuit board inside the main housing 1 includes a core processing module, a billing module, a storage module, a clock module, a power module, an output module and a safety application module. These modules work together to ensure the normal operation, accurate timing and data output of the electric energy meter.

[0084] In summary, with the aid of the above technical solution of the present invention, by adopting the communication time calibration mechanism 11, efficient and accurate communication time calibration of the electric energy meter is realized, and the stable connection between the electric energy meter and the edge server, GPS receiving chip and other modules can be ensured, thereby improving the accuracy of the time calibration, and the time management and synchronization of all electric energy meters in a region can be remotely controlled in real time, effectively reducing the input of manual workload and ensuring the normal and stable operation of the power network. By designing the clamping mechanism 6, components such as the cross fixed axis 602, the cross shaft sleeve 603, and the wire management clamp 604 are adopted, which effectively solves the problem of wiring and wiring in the electric energy meter, and improves the accuracy and reliability of electric energy measurement. At the same time, the limiting mechanism 7 realizes the flexible adjustment and installation of the electric energy meter through the lifting lock plate 702, the adjustment handle 705, the connecting cross bar 706 and other components, solves the installation problem, and improves the adaptability of the electric energy meter in different environments. By providing the ventilation sleeve 801, the expanded net 802, the exhaust fan 803 and other designs of the heat dissipation mechanism 8, the heat dissipation performance of the electric energy meter is effectively improved, the temperature is reduced, and the stability and life of the circuit components are improved. The overall structure of the electric energy meter is carefully designed, including the protective bottom cover 5, the folding cover 9, the display and control panel 10, etc., so that the electric energy meter is more durable and safe in the external environment, and is convenient for users to observe and operate.

[0085] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric energy meter convenient for time calibration, comprising a main housing (1), the end surface of the main housing (1) being provided with a cover housing (2), the bottom end of the main housing (1) being provided with a wiring cavity (3), the wiring cavity (3) being provided with a wiring port (4), characterized in that: A protective bottom cover (5) is provided at the bottom of the cover plate housing (2), and a wire clamping mechanism (6) is provided at the inner bottom of the protective bottom cover (5); The bottoms of both sides of the main shell (1) are provided with limiting mechanisms (7), the tops of both sides of the main shell (1) are provided with heat dissipation mechanisms (8), the bottom of the end surface of the cover shell (2) is provided with a folding cover (9), and the top of the end surface of the cover shell (2) is provided with a display control panel (10); A communication time-correction mechanism (11) is provided at the top of the main housing (1) and the cover housing (2); The communication time-correcting mechanism (11) comprises two semicircular externally threaded bottom pillars (1101) arranged at the top of the main housing (1) and the top of the cover housing (2); the top of the main housing (1) and the top of the cover housing (2) are also provided with an internal column sleeve (1102) and a wire hole (1103); a shielding shell (1104) is arranged at the top of the internal column sleeve (1102); a wire terminal (1105) matching the wire hole (1103) is arranged at the bottom of the shielding shell (1104); and a communication circuit board (1106) is arranged at the top of the shielding shell (1104); An antenna top cover (1107) is arranged at the top of the externally threaded bottom column (1101); the outer edge of the bottom of the antenna top cover (1107) is an externally threaded structure; a positioning column (1108) is arranged on one side of the bottom of the antenna top cover (1107); a positioning groove (1109) matching the positioning column (1108) is arranged on one side of the top of the externally threaded bottom column (1101); and a connecting threaded tube (1110) is sleeved on the outer side of the circumference of the externally threaded bottom column (1101) and the antenna top cover (1107); An electric energy meter circuit board is arranged inside the main housing (1), and the electric energy meter circuit board comprises a core processing module, a billing module, a storage module, a clock module, a power module, an output module and a safety application module; Wherein, the core processing module is used to perform calculation, control and management of the power detection process; The billing module is used to measure the electric energy parameters in real time, including active power, reactive power, voltage, current, line frequency and zero-crossing interruption, to bill the electric energy usage, and to control the circuit breaker to turn on and off the electric energy through the output signal in the meter; The storage module is used to record and store the accumulated data during the electric energy detection process; The clock module is used to achieve accurate timing in a wide temperature range, set the clock and calendar through time calibration data, and continue to keep time by relying on its own oscillation to calculate the time period to which the current moment belongs; The power supply module is used to integrate the four parts of voltage transformation, distillation, filtering and voltage stabilization, reduce the number and amplitude of interference pulses, and provide power supply; The output module is used to output the detection result of the electric energy meter to the client; The security application module is used to provide dedicated network conditions and integrate security protection functions such as identity authentication, data encryption, decryption, secure storage and communication confidentiality; The core processing module is connected to the billing module, the storage module, the clock module, the power module, the output module and the security application module respectively; The communication circuit board (1106) comprises an edge networking module, a GPS receiving chip, a level conversion chip and a time calibration writing chip; The edge networking module is used as a network terminal to establish a wireless communication connection with the edge server and form an edge network with other electric energy meters to realize time information sharing; The GPS receiving chip is used to receive GPS signals through the antenna top cover (1107), and transmit the GPS signals received in real time to the level conversion chip; The level conversion chip is used to decode the GPS signal, realize the conversion of the protocol format and level, and then transmit it to the time calibration writing chip via serial communication; The time calibration writing chip is used to obtain the time information contained in the GPS signal, and write the time information to the corresponding clock module by means of verification and memory writing; The edge networking module is connected to the GPS receiving chip, the level conversion chip and the timing writing chip in sequence.

2. The electric energy meter convenient for time calibration according to claim 1, characterized in that: The bottom of the cover plate shell (2) and both sides of the bottom of the main shell (1) are provided with a snap-fitting groove (12); the inner side of the top of the protective bottom cover (5) is provided with a top ring snap-fitting strip (13) that matches the snap-fitting groove (12); the inner side of the bottom of the protective bottom cover (5) is provided with a wire-passing arc opening (14); A mounting hanging opening (15) is provided at the top of the back side of the main housing (1).

3. The electric energy meter convenient for time calibration according to claim 1, characterized in that: The wire clamping mechanism (6) comprises a plurality of fixing rods (601) arranged at the bottom of the inner side of the protective bottom cover (5); a cross fixed shaft (602) is arranged at the top and the bottom of one end of the fixing rod (601); a cross shaft sleeve (603) is sleeved on the outer side of the circumference of the cross fixed shaft (602); a wire management clamp (604) is arranged on one side of the cross shaft sleeve (603); a cross connecting rod (605) is arranged on the other side of the cross shaft sleeve (603); and a guide sleeve (606) is arranged at one end of the cross connecting rod (605) away from the wire management clamp (604); The bottom of both sides of the protective bottom cover (5) are interspersed with buttons (607), the inner top of the button (607) on one side is provided with a transverse push rod (608), the bottom of the transverse push rod (608) is provided with a guide column (609) corresponding to the guide sleeve (606) one by one, the button (607) is a C-shaped structure and a pressing spring (610) is provided between the button and the outer side wall of the protective bottom cover (5); A transverse push rod (608) is provided at the inner bottom of the button (607) on the other side, and the transverse push rod (608) located at the bottom has a structural direction opposite to that of the transverse push rod (608) located at the top.

4. The electric energy meter convenient for time calibration according to claim 3, characterized in that: The two cable management clips (604) located above and below the same fixing rod (601) have opening directions opposite to each other, and each transverse push rod (608) only cooperates with the cable management clip (604) having the same opening direction.

5. The electric energy meter convenient for time calibration according to claim 1, characterized in that: The limiting mechanism (7) comprises limiting slide rails (701) arranged at the bottom of both sides of the main housing (1); a lifting lock plate (702) is arranged inside the limiting slide rails (701) and is kept in active connection; the bottom of the lifting lock plate (702) is an arc-shaped structure; a spring seat (703) is arranged on the top of the lifting lock plate (702); handle seats (704) are arranged on both sides of the main housing (1) and above the limiting slide rails (701); an adjusting handle (705) is arranged inside the handle seat (704); a connecting cross bar (706) is arranged inside the adjusting handle (705); a tension spring (707) is arranged between the connecting cross bar (706) and the spring seat (703); and limiting lock boxes (708) matching the lifting lock plate (702) are arranged on the top of both sides of the protective bottom cover (5).

6. The electric energy meter convenient for time calibration according to claim 1, characterized in that: The heat dissipation mechanism (8) comprises a ventilation sleeve (801) inserted into the two side walls of the main shell (1), a flared net (802) is arranged inside the ventilation sleeve (801), an exhaust fan (803) is arranged inside the flared net (802), and a protective ceiling (804) is arranged on the top of the outside of the ventilation sleeve (801). The expanded mesh (802) is of a radial structure, with the diameter increasing from the inner circle to the outer circle; the protective ceiling (804) is of a semi-arc bucket-shaped structure.

7. A method for calibrating an electric energy meter, used to implement the time calibration of the electric energy meter convenient for time calibration as claimed in any one of claims 1 to 6, characterized in that: The method comprises the following steps: S1. The electric energy meter establishes an edge network with other electric energy meters through the edge networking module to realize the communication and sharing of time information in the region, and establishes a wireless communication connection with the edge server; S2. While establishing a communication connection with the power service network, the edge server sends a clock calibration signal to the power meter terminal via a GPS signal; S3, the electric energy meter receives the GPS signal through its own GPS receiving chip and level conversion chip, decodes and converts it, realizes the reading of time information, and then writes it into the storage module and the clock module; S4. Several electric energy meters in the edge network perform time correction by sharing time information, and adopt the principle of minority obeys majority to achieve time synchronization and unification in the region.

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