Transparent cost control comprehensive electric energy meter box

Abstract

The invention discloses a transparent cost control comprehensive electric energy meter box which comprises an outer shell, the outer shell comprises a bottom and a transparent cover part, the bottom is formed by PC / ABS or PC / ASA gold-containing plastic injection molding, the transparent cover part is formed by PC injection molding, positioning pieces are distributed on the back face of the outer shell, and a main control module, a metering module, a rate switching module, a prepayment management module and a communication module are integrated in the outer shell. The connecting base is connected with the outer shell in an inserted mode, the two sides of the connecting base are connected with the anti-skid connecting pieces in a sliding mode, the lifting bases and the fixing inserting pieces are arranged in the anti-skid connecting pieces, the extrusion elastic pieces drive the fixing inserting pieces to be stably connected with the positioning pieces in an inserted mode, and tool-free rapid installation is achieved. The upper surface and the lower surface of the outer shell are elastically attached through the arc-shaped elastic piece, long-term gravity deformation of the outer shell is avoided, external impact is buffered through deformation of the arc-shaped elastic piece, multiple modules are highly integrated, combination of a traditional discrete chip and an external module is replaced, the compatibility problem is eliminated, and hardware cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electric energy meter, in particular to a transparent fee control comprehensive electric energy meter box. BACKGROUND

[0002] With the transformation of global energy structure and the in-depth promotion of smart grid construction, electric energy metering equipment is experiencing a leap from traditional mechanical to electronic and intelligent. The current electric power market requires electric energy metering device not only for basic electric quantity statistics, but also for composite functions such as time-of-use billing, step electricity price execution and remote fee control, in order to adapt to the dynamic electricity price mechanism and user-side energy management needs. Electronic electric energy meter, with its high-precision sampling, digital processing and expandable function architecture, has gradually become the core carrier of building modern electric power metering system, especially in three-phase electric energy metering scene, its stability and function integration directly related to the efficiency of power grid operation and user electricity experience, especially in industrial electricity, commercial complex and distributed energy access scene.

[0003] There are many technical bottlenecks in the actual application of traditional electric energy meter: in the aspect of installation structure, most products adopt bolt fixing or buckle connection method, which needs to use special tools to complete assembly, and is easy to cause connection loosening due to vibration or external force impact after long-term use, especially in outdoor strong vibration environment, the reliability decreases significantly; in the aspect of function integration, the traditional scheme usually adopts discrete metering chip and external prepayment module combination, not only there is chip communication compatibility problem, but also the introduction of external module increases system complexity and fault point, and the hardware cost and maintenance difficulty increase; in addition, the separation design of communication module and main control unit leads to high dependence of data transmission on external network, which is easy to cause prepayment management function interruption in unstable communication signal area, directly affecting user electricity continuity and power supply enterprise fee control reliability, therefore, the transparent fee control comprehensive electric energy meter box is proposed. SUMMARY

[0004] The present application provides the following technical scheme: a transparent fee control comprehensive electric energy meter box, comprising: a shell body, and a protective front cover rotatably connected to the front of the shell body, and the back of the shell body is uniformly provided with a positioning piece, and a main control module, a metering module, a rate switching module, a prepayment management module and a communication module are respectively arranged in the inner cavity of the shell body; a connecting seat is arranged on the back of the shell body, and the connecting seat is insertedly connected with the shell body, and anti-skid connecting pieces are slidably connected on the upper and lower parts of the two sides of the connecting seat, and lifting seats are arranged on the inner side surfaces of the anti-skid connecting pieces, and fixing inserts are uniformly arranged on the surfaces of the lifting seats, and the fixing inserts are insertedly connected with the positioning pieces, and extrusion elastic pieces are arranged between the two groups of lifting seats; The support is rotatably connected to the lower front of the connecting seat, and the upper surface of the support is in close contact with the lower surface of the outer shell. An arc-shaped elastic element is provided between the lower surface of the support and the front of the connecting seat.

[0005] The connector is fixed to the mounting base using pre-embedded bolts; Check the integrity of the positioning parts on the back of the outer casing and their compatibility with the fixing plugs; The operator holds the back of the outer casing, aligns the positioning piece with the connecting seat, and inserts it vertically until the positioning piece reaches the preset insertion depth. The anti-slip connector and the connecting seat move synchronously under the action of the compression elastic element; the anti-slip connector and the lifting seat rise vertically. The fixing plug rises synchronously with the lifting seat, and its conical end is inserted into the positioning component. When the lower edge of the outer shell contacts the upper surface of the support, the support rotates downward around the axis, and the arc-shaped elastic element is compressed to the working stroke. Once the outer shell is fully in place, the support rotates in the opposite direction under the restoring force of the arc-shaped elastic element, and the anti-slip texture on its upper surface forms a surface contact with the bottom surface of the outer shell. The main control module coordinates the metering module, rate switching module, prepaid management module and communication module to work together via the SPI bus; The metering module uses three independent Σ-Δ type ADCs; The rate switching module achieves independent three-phase switching based on real-time electricity price signals through a group of solid-state relays; The prepaid management module uses a dynamic encryption algorithm with a key length of 128 bits. The prepaid management module is connected to a miniature circuit breaker and implements self-control functions through a chip. It supports remote recharge and automatic power cut-off for overdue payments. If a user is in arrears with electricity bills, the power will be automatically cut off. The communication module supports both RS485 and Modbus protocols.

[0006] Preferably, the connecting seat has side sliding grooves on both sides, and the anti-slip connecting piece is slidably connected to the upper and lower parts of the side sliding grooves.

[0007] The side sliding grooves on both sides of the connector provide sliding tracks for the anti-slip connector. The anti-slip connector slides horizontally along the upper and lower parts of the side sliding grooves, and the extension length or position of the anti-slip connector can be adjusted by sliding.

[0008] Preferably, the upper and lower parts of the inner cavity of the side sliding groove are respectively provided with a protective outer plate and a protective inner plate, and the protective outer plate and the protective inner plate are respectively disposed on the front end and rear end of the surface of the corresponding anti-slip connector.

[0009] The outer protective plate is fixed to the upper part of the inner cavity of the side sliding groove, and the inner protective plate is fixed to the lower part of the inner cavity of the side sliding groove, respectively covering the front and rear ends of the anti-slip connector surface, forming a double-layer protective structure.

[0010] Preferably, the front of the outer shell is uniformly provided with positioning holes, and the positioning member corresponds in position and shape to the positioning holes, and a fixing socket is provided on the upper surface of the positioning member, and the fixing insert is inserted and connected with the fixing socket.

[0011] The positioning holes provided on the front of the outer shell are matched in shape with the positioning member, the positioning member is inserted into the positioning hole, the fixing insert penetrates the fixing socket on the upper surface of the positioning member, and longitudinal locking is completed.

[0012] Preferably, the inner cavity of the connecting seat is provided with guide rods on both sides, and the lifting seat is slidingly connected to the upper and lower parts of the surface of the guide rods, and the extrusion elastic member is sleeved on the center of the surface of the guide rod.

[0013] The lifting seat vertically slides along the surface of the guide rods on both sides of the inner cavity of the connecting seat, the extrusion elastic member is sleeved on the center of the guide rod, and the elastic deformation provides a buffering force.

[0014] Preferably, the lower part of the front of the connecting seat is rotatably connected with a rotating shaft, the supporting member is connected with the rotating shaft, and a convex connecting plate is additionally arranged between the end of the arc-shaped elastic member and the front of the connecting seat.

[0015] The supporting member is rotatably connected with the lower part of the front of the connecting seat through the rotating shaft, the arc-shaped elastic member is connected with the supporting member and the front of the connecting seat at both ends, and the convex connecting plate strengthens the connection strength of the arc-shaped elastic member and the connecting seat.

[0016] Preferably, the metering module comprises a current transformer, a voltage sampling circuit and a metering chip, which are used to collect three-phase current and voltage signals in real time and perform metering processing.

[0017] The current transformer collects three-phase current signals in real time, the voltage sampling circuit synchronously acquires three-phase voltage signals, and the metering chip performs operation processing on the collected current and voltage data, and outputs the electric energy metering result.

[0018] Preferably, the rate switching module comprises a clock circuit and a rate storage unit, which are used to switch the billing rate according to the preset time period.

[0019] The clock circuit generates a real-time time signal, the rate storage unit pre-stores billing rate parameters of different time periods, and the system matches the corresponding rate according to the clock signal to automatically switch the billing mode.

[0020] Preferably, the prepayment management module comprises a balance calculation unit and a relay control unit, which are used to control the on-off of the circuit according to the user balance.

[0021] The balance calculation unit deducts the electricity cost in real time and updates the remaining balance, and the relay control unit monitors the balance threshold and triggers the relay to disconnect the circuit when the balance is insufficient.

[0022] Preferably, the communication module comprises an RS485 interface and a wireless communication unit for interacting data with external systems.

[0023] The RS485 interface transmits metering data to the local system through wired mode, and the wireless communication unit uploads data to the remote platform by adopting a standard protocol, so as to realize bidirectional data interaction.

[0024] Compared with the prior art, the transparent fee control comprehensive electric energy meter box has the following beneficial effects: The combination of the positioning member, the plug-in structure of the connecting seat, the anti-skid connecting piece, the lifting seat and the fixing plug-in piece enables the device to be quickly fixed without additional tools during installation, the elastic force of the extruded elastic piece ensures that the fixing plug-in piece and the positioning member remain in a stable plug-in state, the connection is effectively prevented from loosening due to vibration or external force, and the installation reliability and environmental adaptability are improved. The rotating connection structure of the connecting seat and the supporting piece is elastically supported by the arc-shaped elastic piece, so that the lower surface of the shell body and the upper surface of the supporting piece are self-adaptively attached, the deformation risk of the shell body due to gravity after long-term use is avoided, and the influence of external impact on the internal precision module is reduced through the deformation buffering capacity of the arc-shaped elastic piece. The main control module, the metering module, the rate switching module, the prepayment management module and the communication module are integrated in the inner cavity of the shell body, which replaces the combination scheme of the traditional time-sharing metering chip and the external prepayment module, the highly integrated design eliminates the problem of insufficient compatibility between discrete chips, avoids the system complexity and fault risk caused by external modules, significantly reduces the hardware cost and simplifies the maintenance process, and meanwhile, the modular architecture enables the rate switching and prepayment management functions to be flexibly configured through software, and the adaptability of the system to different charging strategies is improved. The deep integration of the built-in communication module and the main control module optimizes the data transmission path, reduces the dependence on external networks, and even in a weak signal area, the local prepayment management module can still independently perform balance checking and power-off control functions, ensuring the continuity of the prepayment service. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the present application.

[0026] Figure 2 is a structural schematic diagram of the present application.

[0027] Figure 3 is a structural schematic diagram of the present application.

[0028] Figure 4 is a structural schematic diagram of the present application.

[0029] Figure 5 is a schematic diagram of the shell body part of the present application.

[0030] Figure 6 is a schematic diagram of the rotating shaft and its connecting structure of the present application.

[0031] Figure 7 is a schematic diagram of the support and its connecting structure of the present application.

[0032] Figure 8 is a schematic diagram of the guide rod and its connecting structure of the present application.

[0033] Figure 9 is a schematic block diagram of the system of the present application.

[0034] Explanation of reference signs: 1, shell body; 2, protective front cover; 3, positioning member; 4, fixed socket; 5, connecting seat; 6, side sliding groove; 7, anti-skid connecting member; 8, protective outer plate; 9, protective inner plate; 10, positioning hole; 11, guide rod; 12, lifting seat; 13, extruded elastic member; 14, fixed plug; 15, rotating shaft; 16, support; 17, arc-shaped elastic member; 18, convex connecting plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 , the present application provides a technical solution, a transparent fee control comprehensive electric energy meter box, comprising: a shell body 1 and a protective front cover 2 rotatably connected to the front of the shell body 1, the protective front cover 2 is made of transparent material, which is convenient for observation, the shell body 1 includes a bottom and a transparent cover part, wherein the bottom is made of PC / ABS or PC / ASA gold-containing plastic injection molding, the transparent cover part is made of PC (polycarbonate) injection molding, and the back of the shell body 1 is uniformly provided with a positioning member 3, and a main control module, a metering module, a rate switching module, a prepayment management module and a communication module are respectively arranged in the inner cavity of the shell body 1; The connecting seat 5 is arranged on the back of the outer shell 1, and the connecting seat 5 is connected with the outer shell 1, and the anti-skid connecting pieces 7 are slidably connected on the upper and lower parts of the two sides of the connecting seat 5, the inner side of the anti-skid connecting piece 7 is provided with the lifting seat 12, and the fixing plug 14 is uniformly arranged on the surface of the lifting seat 12, and the fixing plug 14 is connected with the positioning piece 3, and the extrusion elastic piece 13 is arranged between the two groups of lifting seats 12; The supporting piece 16 is rotationally connected to the front lower part of the connecting seat 5, and the upper surface of the supporting piece 16 is tightly combined with the lower surface of the outer shell 1, and the arc-shaped elastic piece 17 is arranged between the lower surface of the supporting piece 16 and the front surface of the connecting seat 5.

[0037] The connecting seat 5 is fixed on the installation base surface through the pre-buried bolt; The integrity of the positioning piece 3 on the back of the outer shell 1 and the matching degree with the fixing plug 14 are checked; The operator holds the back of the outer shell 1, and the positioning piece 3 is vertically inserted into the connecting seat 5, and when the insertion depth of the positioning piece 3 reaches the preset value; The anti-skid connecting piece 7 and the lifting seat 12 vertically rise under the action of the extrusion elastic piece 13; The fixing plug 14 rises synchronously with the lifting seat 12, and the tapered end of the fixing plug 14 is inserted into the positioning piece 3; When the outer shell 1 contacts the upper surface of the supporting piece 16, the supporting piece 16 rotates downward around the rotating shaft 15, and the arc-shaped elastic piece 17 is compressed to the working stroke; When the outer shell 1 is completely in place, the supporting piece 16 reversely rotates under the restoring force of the arc-shaped elastic piece 17, and the upper surface of the supporting piece 16 forms a surface contact with the bottom surface of the outer shell 1; The main control module coordinates the metering module, the rate switching module, the prepayment management module and the communication module to work cooperatively through the SPI bus; The metering module adopts three-way independent sigma-delta type ADC; The rate switching module realizes three-phase independent switching through the solid-state relay group according to the real-time power price signal; The prepayment management module adopts a dynamic encryption algorithm with a key length of 128 bits, and is connected with a small circuit breaker to realize self-control function through a chip, and supports remote recharging and automatic power-off function in case of user's arrears of electricity charges; The communication module supports RS485 / Modbus double protocol; Through the linkage design of the anti-skid connecting piece 7 and the lifting seat 12, the mechanical locking is quickly completed, the efficiency is improved compared with the traditional threaded fixing mode, and the extrusion elastic piece 13 cooperates with the built-in spring pad to effectively resist vibration; The rotation design of the support 16 matches the nonlinear stiffness characteristic of the arc-shaped elastic member 17, can absorb the installation error of the outer shell 1, ensures uniform distribution of the contact surface pressure, and avoids structural deformation caused by local stress concentration; The three-way independent sigma-delta type ADC architecture eliminates inter-channel crosstalk and maintains certain metering accuracy within a certain wide load range, meeting the IEC62053-21 standard Class0.2S requirement; The solid-state relay group of the rate switching module realizes non-contact switching, prolongs the service life of the mechanical relay, keeps the voltage fluctuation in a certain range during switching, and thus ensures stable operation of the sensitive load; The prepayment management module adopts the AES-128 encryption algorithm, cooperates with the dynamic token verification mechanism, blocks the success rate of the replay attack to reach a certain standard, and reduces the response time of power-off due to arrears; The main control module and each functional module are connected through the golden finger connector to realize blind insertion and docking, support live plug operation, reduce single module replacement time, and improve maintenance efficiency compared with the traditional wiring method; Communication redundancy architecture The RS485 and Modbus dual-channel design realizes physical layer redundancy, reduces automatic switching time of a single channel fault, improves data transmission reliability, and meets the high availability requirement of the smart grid terminal node.

[0038] Please refer to Figure 4 and Figure 5 The two sides of the connecting seat 5 are provided with side sliding grooves 6, and the anti-skid connecting pieces 7 are slidingly connected to the upper and lower parts of the side sliding grooves 6.

[0039] The side sliding grooves 6 provided on the two sides of the connecting seat 5 provide sliding tracks for the anti-skid connecting pieces 7, and the anti-skid connecting pieces 7 slide horizontally along the upper and lower parts of the side sliding grooves 6 to adjust the extension length or position of the anti-skid connecting pieces 7; Through the sliding cooperation of the side sliding grooves 6 and the anti-skid connecting pieces 7, the anti-skid connecting pieces 7 are flexibly adjusted, the connection stability of the equipment and external components is enhanced, and the displacement risk caused by vibration during operation is avoided.

[0040] The inner cavities of the side sliding grooves 6 are respectively provided with protective outer plates 8 and protective inner plates 9, and the protective outer plates 8 and the protective inner plates 9 are respectively arranged at the front ends and the rear ends of the surfaces of the anti-skid connecting pieces 7.

[0041] The protective outer plates 8 are fixed to the upper parts of the inner cavities of the side sliding grooves 6, and the protective inner plates 9 are fixed to the lower parts of the inner cavities of the side sliding grooves 6, respectively covering the front ends and the rear ends of the surfaces of the anti-skid connecting pieces 7 to form a double-layer protection structure; The combined design of the protective outer plates 8 and the protective inner plates 9 can effectively block the invasion of external foreign matters into the side sliding grooves 6, limit the sliding range of the anti-skid connecting pieces 7, prevent the anti-skid connecting pieces 7 from being pulled out or excessively displaced, and improve the structural durability.

[0042] Please refer to Figure 2 、 Figure 3 and Figure 6 The front surface of the outer shell 1 is uniformly provided with a positioning hole 10, and the positioning member 3 corresponds in position and shape to the positioning hole 10, and a fixed insertion hole 4 is provided on the upper surface of the positioning member 3, and the fixed insertion member 14 is inserted and connected with the fixed insertion hole 4.

[0043] The positioning hole 10 provided on the front surface of the outer shell 1 is matched in shape with the positioning member 3, after the positioning member 3 is inserted into the positioning hole 10, the fixed insertion member 14 penetrates the fixed insertion hole 4 on the upper surface of the positioning member 3, and the longitudinal locking is completed. Through the accurate positioning of the positioning hole 10 and the positioning member 3, the accuracy of the installation position of the outer shell 1 is ensured, and the insertion of the fixed insertion member 14 further prevents the loosening of the positioning member 3, and the assembly reliability of the overall structure is improved.

[0044] The inner cavity of the connecting seat 5 is provided with a guide rod 11 on both sides, and the lifting seat 12 is slidingly connected to the upper and lower parts of the surface of the guide rod 11, and the extrusion elastic member 13 is sleeved on the central part of the surface of the guide rod 11.

[0045] The lifting seat 12 vertically slides along the surface of the guide rod 11 on both sides of the inner cavity of the connecting seat 5, the extrusion elastic member 13 is sleeved on the center of the guide rod 11, and the buffer force is provided through elastic deformation; The guide rod 11 provides a guiding effect for the sliding of the lifting seat 12, ensures the perpendicularity of the motion trajectory, the extrusion elastic member 13 absorbs impact energy, reduces mechanical vibration in the movement process of the lifting seat 12, and improves the smoothness of the action.

[0046] The connecting seat 5 is rotatably connected with a rotating shaft 15 at the lower part of the front surface, and a supporting member 16 is connected with the rotating shaft 15, and a convex connecting plate 18 is additionally provided between the end of an arc-shaped elastic member 17 and the front surface of the connecting seat 5.

[0047] The supporting member 16 is rotatably connected with the lower part of the front surface of the connecting seat 5 through the rotating shaft 15, the arc-shaped elastic member 17 is connected with the supporting member 16 and the front surface of the connecting seat 5 at both ends respectively, and the convex connecting plate 18 strengthens the connection strength of the arc-shaped elastic member 17 and the connecting seat 5; The rotating shaft 15 realizes the angle adjustment function of the supporting member 16, the arc-shaped elastic member 17 provides elastic supporting force, the convex connecting plate 18 enhances the structural stability, and the three work together to improve the load capacity and anti-deflection performance of the supporting member 16.

[0048] Please refer to Figure 1 and Figure 9 The metering module includes a current transformer, a voltage sampling circuit and a metering chip, which is used for real-time acquisition of three-phase current and voltage signals and metering processing.

[0049] The current transformer collects three-phase current signals in real time, the voltage sampling circuit synchronously acquires three-phase voltage signals, the metering chip performs operation and processing on the collected current and voltage data, and outputs the electric energy metering result. High-precision electric energy metering is achieved through independent modular design, the separation layout of the current transformer and the voltage sampling circuit reduces signal interference, and the accuracy of metering data is improved.

[0050] The rate switching module includes a clock circuit and a rate storage unit, which is used to switch the billing rate according to the preset time period.

[0051] The clock circuit generates a real-time time signal, and the rate storage unit pre-stores billing rate parameters for different time periods. The system matches the corresponding rate according to the clock signal and automatically switches the billing mode. The time-based rate switching mechanism adapts to the time-of-use electricity pricing policy, and the linkage of the clock circuit and the rate storage unit ensures the timeliness and accuracy of the rate switching, improving the billing flexibility.

[0052] The prepayment management module includes a balance calculation unit and a relay control unit, which is used to control the circuit on-off according to the user balance.

[0053] The balance calculation unit deducts the electricity cost in real time and updates the remaining balance, and the relay control unit monitors the balance threshold and triggers the relay to disconnect the circuit when the balance is insufficient. Through dynamic balance management and relay linkage control, the automatic execution of the prepayment mode is realized, the risk of arrears is avoided, and the interests of the power supply party are protected.

[0054] The communication module includes an RS485 interface and a wireless communication unit, which is used to interact data with external systems.

[0055] The RS485 interface transmits metering data to the local system through wired transmission, and the wireless communication unit uploads data to the remote platform using standard protocols, realizing bidirectional data interaction. The dual communication channel design takes into account the reliability and scalability of data transmission. The RS485 interface meets the demand of industrial field bus, and the wireless communication unit supports remote monitoring, improving the system interconnection capability.

[0056] In this scheme, the connecting seat 5 is fixed to the preset installation base surface through pre-buried bolts, ensuring that the back surface of the connecting seat 5 completely matches the base surface, and the bolt fastening torque meets the design specification. Before operation, check the surface integrity of the back surface positioning piece 3 of the outer shell 1, confirm that the fixed insertion hole 4 is not deformed or blocked, and verify the size matching degree of the positioning piece 3 and the conical end of the fixed plug 14. The operator holds the back surface of the outer shell 1, inserts the positioning piece 3 vertically into the corresponding positioning hole 10 of the connecting seat 5, and triggers the mechanical limit when the insertion depth of the positioning piece 3 reaches the preset value. The extrusion elastic member 13 releases the compression energy storage to prevent the anti-skid connector 7 from sliding horizontally along the upper and lower parts of the side sliding groove 6, to drive the lifting seat 12 to vertically rise along the guide rod 11, to make the fixed plug 14 move synchronously with the lifting seat 12, and the guide rod 11 can provide accurate guiding for the lifting and lowering movement of the lifting seat 12, so as to ensure the verticality of the movement track, and the extrusion elastic member 13 can cooperate with the elastic pad to absorb impact energy, so as to reduce the mechanical vibration of the lifting seat 12 during the movement, so as to improve the smoothness of the movement; When the lifting seat 12 moves to a certain position, the conical end of the fixed plug 14 is fully inserted into the fixed hole 4 of the positioning member 3, forming a mechanical interlocking structure, and the protective outer plate 8 and the protective inner plate 9 cover the sliding area of the anti-skid connector 7; When the outer shell 1 contacts the upper surface of the supporting member 16, the supporting member 16 is deflected downward around the rotating shaft 15, and the arc-shaped elastic member 17 is elastically deformed by the convex connecting plate 18 and the connecting seat 5; After the outer shell 1 is completely positioned, the supporting member 16 is reversely deflected under the restoring force of the arc-shaped elastic member 17, and the upper surface of the supporting member 16 forms a surface contact with the bottom surface of the outer shell 1, the contact pressure is uniformly distributed through the nonlinear stiffness characteristic, the supporting member 16 can be angle-adjusted through the rotating shaft 15, and the arc-shaped elastic member 17 provides elastic supporting force, and the convex connecting plate 18 enhances the stability between structures, and the three work together to effectively improve the load capacity and anti-deflection performance of the supporting member 16; The main control module initializes the metering module, the rate switching module, the prepayment management module and the communication module through the SPI bus, establishes the physical connection of the gold finger connector and completes the self-checking program; When the metering module starts, the current transformer collects real-time three-phase current signals, and the voltage sampling circuit synchronously acquires three-phase voltage signals, and the metering chip performs analog-to-digital conversion and energy integration operation based on the Σ-Δ type ADC architecture; The rate switching module receives the time signal generated by the clock circuit, retrieves the preset parameters of the rate storage unit, and realizes three-phase independent switching through the solid-state relay group, and the voltage fluctuation during the switching process is controlled within a certain rated value; The prepayment management module runs the AES-128 dynamic encryption algorithm, and the balance calculation unit deducts the corresponding cost of the power consumption in real time, and when the balance is lower than the preset threshold, the relay control unit drives the solid-state relay group in the small circuit breaker to disconnect the power supply circuit; The communication module uploads the metering data to the local management system through the RS485 interface using the Modbus protocol, and the wireless communication unit sends encrypted data packets to the remote service platform at a preset period, and the double-channel fault switching time is reduced; During maintenance operation, the reverse operation anti-skid connector 7 is released from mechanical locking, the support 16 keeps the outer shell 1 stable under the action of the arc-shaped elastic member 17, and the single function module is replaced through the gold finger connector for live plug-in replacement; The positioning hole 10 and the positioning member 3 form a two-stage positioning structure, when the outer shell 1 is impacted by external force, the guide rod 11 guides the vertical movement of the lifting seat 12, the elastic member 13 is extruded and cooperates with the arc-shaped elastic member 17 to absorb impact energy, through the precise positioning and insertion operation of the positioning hole 10 and the positioning member 3, the accuracy of the installation position between the outer shell 1 and the connecting seat 5 is ensured, the insertion of the fixed plug-in 14 into the positioning member 3 is ensured, and further loosening is prevented, thereby improving the assembly reliability of the whole structure; The protective outer plate 8 and the protective inner plate 9 form a double-layer protection structure, which prevents foreign matter from invading the side sliding groove 6 to affect the sliding stroke of the anti-skid connector 7, the convex connecting plate 18 strengthens the connection strength of the arc-shaped elastic member 17 and the connecting seat 5, and the cooperation of the protective outer plate 8 and the protective inner plate 9 can block the invasion of external foreign matter into the side sliding groove 6, and at the same time limit the movement range of the anti-skid connector 7, thereby ensuring the use safety.

[0057] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0058] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A transparent prepaid integrated energy meter box, characterized in that, include: The outer shell (1) and the protective front cover (2) are rotatably connected to the front of the outer shell (1). Positioning parts (3) are evenly installed on the back of the outer shell (1). The main control module, metering module, rate switching module, prepaid management module and communication module are respectively installed in the inner cavity of the outer shell (1). A connecting seat (5) is provided on the back of the outer shell (1), and the connecting seat (5) is inserted into the outer shell (1). Anti-slip connecting parts (7) are slidably connected to the upper and lower parts on both sides of the connecting seat (5). A lifting seat (12) is installed on the inner side of the anti-slip connecting part (7). Fixed plugs (14) are evenly installed on the surface of the lifting seat (12). The fixed plugs (14) are inserted into the positioning part (3). A compression elastic part (13) is added between the two sets of lifting seats (12). The support member (16) is rotatably connected to the lower front of the connecting seat (5), and the upper surface of the support member (16) is closely fitted with the lower surface of the outer shell (1), and an arc-shaped elastic member (17) is provided between the lower surface of the support member (16) and the front of the connecting seat (5).

2. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The connecting seat (5) has side sliding grooves (6) on both sides, and the anti-slip connecting piece (7) is slidably connected to the upper and lower parts of the side sliding groove (6).

3. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The upper and lower parts of the inner cavity of the side sliding groove (6) are respectively provided with a protective outer plate (8) and a protective inner plate (9), and the protective outer plate (8) and the protective inner plate (9) are respectively provided on the front end and rear end of the surface of the corresponding anti-slip connector (7).

4. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The outer shell (1) has uniformly provided positioning holes (10) on its front side, and the positioning component (3) corresponds to the position and shape of the positioning hole (10). A fixing insertion hole (4) is provided on the upper surface of the positioning component (3), and the fixing plug (14) is inserted and connected to the fixing insertion hole (4).

5. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: Guide rods (11) are installed on both sides of the inner cavity of the connecting seat (5), and the lifting seat (12) is slidably connected to the upper and lower parts of the surface of the guide rod (11). The extrusion elastic element (13) is sleeved on the center of the surface of the guide rod (11).

6. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The lower front part of the connecting seat (5) is rotatably connected to a rotating shaft (15), and the support member (16) is connected to the rotating shaft (15), and a convex connecting plate (18) is added between the end of the arc-shaped elastic member (17) and the front of the connecting seat (5).

7. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The metering module includes a current transformer, a voltage sampling circuit, and a metering chip, which are used to acquire three-phase current and voltage signals in real time and perform metering processing.

8. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The rate switching module includes a clock circuit and a rate storage unit, used to switch billing rates according to a preset time period.

9. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The prepaid management module includes a balance calculation unit and a relay control unit, which are used to control the circuit to open and close according to the user's balance.

10. The transparent prepaid integrated energy meter box according to claim 1, characterized in that: The communication module includes an RS485 interface and a wireless communication unit for exchanging data with external systems.

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