Energy-saving intelligent electric energy metering box

Abstract

This invention provides an energy-saving intelligent power metering box, relating to the field of electrical protection equipment technology, including a metering box and a low-power anomaly monitoring and wake-up system. The metering box has a fixed support platform on its bottom, an exhaust platform, an explosion-proof plug, and an irregularly shaped door. It houses intelligent protection components (including a positioning platform, a one-way ball joint, a fan, a temperature and humidity sensor, a dehumidifier, a stepper motor, an electric push rod, and a sealing plate). The low-power anomaly monitoring and wake-up system includes monitoring, data processing, and execution control units. The monitoring unit collects temperature, humidity, water level, component electrical parameters, and leakage signals. The data processing unit analyzes parameters to generate indicators, judges the status, and performs correlation checks, comparing the current curve with historical pre-fault curves to generate a wake-up command. The execution unit drives the protective components or keeps non-critical components in sleep mode. This invention avoids moisture accumulation and rainwater intrusion, improves operational safety, and achieves a balance between low power consumption and safety protection.

Description

Technical Field

[0001] This invention relates to the field of electrical protection equipment technology, and in particular to an energy-saving intelligent power metering box. Background Technology

[0002] With the deepening of smart grid construction, electricity metering boxes, as the core terminal equipment for power metering and line protection, are widely deployed in outdoor residential areas, industrial plants, and other scenarios. Their operational stability directly affects the accuracy of power metering and line safety, while also needing to adapt to variable outdoor environments (such as rain, high humidity, and high water levels) and energy-saving operation requirements. Although current metering boxes are equipped with basic protective components, they still have significant shortcomings in environmental adaptability and protection accuracy, making it difficult to meet the requirements of smart grids for efficient and safe use of equipment.

[0003] Existing electricity metering boxes have two major problems: First, the moisture handling mechanism is lacking. Although some are equipped with temperature and humidity sensors and dehumidifiers, a detection-dehumidification linkage logic has not been formed. In rainy weather, moisture easily accumulates inside the box, causing electrical components to become damp, which not only affects the metering accuracy but may also cause short circuits. Second, the protection capability in complex scenarios is insufficient. The exhaust and heat dissipation channels are mostly fixed structures, lacking automatic on / off design and dedicated drive components. During heavy rain or high water levels, rainwater can easily enter the box through the channels, making it unable to accurately cope with severe weather. The risk of water damage to the components inside the box is high, and targeted solutions are urgently needed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an energy-saving intelligent power metering box.

[0005] To solve the above-mentioned technical problems, the present invention provides an energy-saving intelligent electricity metering box, comprising a metering box; a support platform is fixedly connected to the bottom surface of the metering box, and multiple longitudinal through-flow channels are equidistantly opened at the front end of the support platform, and an inlet channel is opened in the middle of one side of the support platform; positioning blocks are installed on the upper and lower sides of both rear ends of the metering box; an exhaust platform communicating with the inner cavity is installed on the upper and lower sides of one side of the metering box, and the metering box has an exhaust channel that cooperates with the exhaust platform; multiple first explosion-proof plugs are equidistantly installed from top to bottom in the middle of the other side of the metering box, and a second explosion-proof plug is installed on one side of the bottom surface of the metering box; multiple irregularly shaped opening and closing doors are hinged to the front end of the metering box, and intelligent protection components are installed inside the metering box; It also includes a low-power anomaly monitoring and wake-up system integrated in the metering box, the low-power anomaly monitoring and wake-up system including a low-power monitoring unit, a data processing unit and an execution control unit; The low-power monitoring unit is used to collect key abnormal parameters of the metering box; The data processing unit is pre-set with a parameter index library and historical index curve generation logic. The parameter index library contains normal thresholds and fault thresholds for corresponding indicators of each component of the intelligent protection component. It receives key abnormal parameters and analyzes them to obtain the indicators of each parameter. It matches the indicators of each parameter with the pre-set parameter index library to determine the current state of the parameter, including normal, abnormal, and fault states. In the abnormal state, it performs parameter correlation investigation and analysis. When the similarity between the current index curve generated based on the indicators of each parameter and the index curve before the historical fault state meets the preset conditions, it generates a wake-up command and sends it to the execution control unit. After receiving a wake-up command, the execution control unit drives the corresponding component in the intelligent protection component to start operation, or maintains the low-power sleep state of non-critical components.

[0006] Preferably, the intelligent protection component includes a cylindrical positioning platform that is horizontally and equidistantly installed on the bottom surface of the metering box. Multiple connecting slots are equally spaced on the outer side below the positioning platform, and an upward-tilting blocking platform is installed above the inner cavity of the positioning platform. A one-way ball is installed on the bottom surface of the blocking platform, and the bottom surface of the one-way ball abuts against the inner bottom surface of the positioning platform.

[0007] Preferably, the intelligent protection component also includes a filter screen installed on the top surface of the positioning platform, and a first fan is installed on the top surface of the filter screen; temperature and humidity sensors are installed at the four corners of the inner wall of the rear end of the metering box, and a dehumidifier is installed in the middle of the top surface of the metering box; a flexible rubber tube is connected to the middle of one side of the dehumidifier, and a drain hole is opened on one side of the metering box to accommodate the passage of the rubber tube.

[0008] Preferably, the intelligent protection component further includes positioning plates horizontally installed on the upper and lower sides of the inner wall of one side of the metering box. A stepper motor is installed at the middle of the near ends of the two positioning plates. The output shafts of the two stepper motors pass through the corresponding positioning plates, and the output shafts of the stepper motors are connected to lead screws via couplings. Guide rods are vertically installed at the front and rear ends of the far ends of the two positioning plates. The lead screws are threaded to blocking blocks. The blocking blocks have air guide grooves that cooperate with the exhaust grooves, and guide holes that cooperate with the sliding of the guide rods are vertically opened on both sides of the blocking blocks.

[0009] Preferably, the intelligent protection component further includes a mounting platform installed in the middle of the inner wall on the other side of the metering box. A self-locking electric push rod is installed horizontally at the front and rear ends of the top of the mounting platform, and a second fan is installed between the mounting platforms. An emergency slot for cooperating with the second fan is opened on the other side of the metering box.

[0010] Preferably, a longitudinal sliding groove is provided above the emergency slot, and a sealing plate is slidably connected in the sliding groove. The upper side of the sealing plate is fixed to the output shaft of the electric push rod, and a sealing groove is provided on the inner side wall of the sealing plate, and a sealing ring is installed in the sealing groove.

[0011] Preferably, the key abnormal parameters of the low-power monitoring unit specifically include: The temperature and humidity parameters collected by the temperature and humidity sensor, the water level parameters collected by the liquid level sensor outside the metering box, the operating electrical parameters and action signals of each component of the intelligent protection component, and the leakage signals of the first and second explosion-proof plugs.

[0012] As a preferred method, key anomaly parameters are received and analyzed to obtain the indices for each parameter, specifically: Let x be any key anomaly parameter, and set a monitoring time zone T. The number of samplings within monitoring time zone T is n, satisfying n≥1. The parameter value of the i-th sampling is denoted as... , i = 1,2,...,n; The mean value of parameters within the monitoring time zone T is calculated using the arithmetic mean formula. The formula is ; The degree of parameter fluctuation within the monitoring time zone T is calculated using the standard deviation formula and recorded as the parameter fluctuation value. The formula is ; The upper limit of the normal threshold corresponding to the identified parameter is used as the limit value. The current value of the parameter is subtracted from the limit value to obtain the limit difference. Set a standard value for the parameter, and subtract the current value from the standard value to obtain the standard deviation. ; For the parameters at the current moment, the limit difference, standard deviation, parameter mean, and parameter fluctuation are weighted and fused to obtain the parameter index value. The formula is ;in, These represent the weighting coefficients for the parameter's limit difference, standard deviation, mean, and fluctuation value, respectively.

[0013] Preferably, the low-power anomaly monitoring and wake-up system further includes a low-power power supply unit, which is electrically connected to the main power supply line and backup battery of the metering box. When the metering box 1 is not in use, the low-power power supply unit provides the lowest power supply only to the low-power monitoring unit and the data processing unit. When the main power supply line is interrupted, the low-power power supply unit automatically switches to backup battery power supply.

[0014] As a preferred approach, parameter correlation analysis is performed under abnormal conditions, specifically as follows: The preset parameter correlation matrix R, where This indicates that there is a relationship between parameters x and y. This indicates that parameters x and y are not related; extract all parameters that satisfy this condition. The associated parameter y; The linear correlation between parameter x and correlation parameter y within the monitoring time zone T is calculated using the Pearson correlation coefficient. The formula is as follows: ,in Let y be the mean of the correlation parameter. The larger the absolute value, the stronger the correlation. Preset correlation threshold If there exists an associated parameter y that satisfies If the state of y is abnormal / fault, it is determined to be an abnormal superposition, triggering a fault precursor warning; if all associated parameters y satisfy If the condition is normal, it is considered a normal fluctuation.

[0015] Compared with related technologies, the energy-saving intelligent electricity metering box provided by the present invention has the following beneficial effects: 1. This invention uses a low-power monitoring unit to collect temperature, humidity, and water level parameters in real time. Combined with the timely dehumidification of the dehumidifier in the intelligent protection component, and the automatic on / off control of the exhaust duct and emergency duct by the stepper motor driving the blocking block and the electric push rod driving the sealing plate, it can not only avoid the electrical components from getting damp and the measurement accuracy deviation caused by the moisture in the box during rainy weather, but also prevent rainwater from entering during heavy rain or high water levels, thus significantly improving the safety of equipment operation.

[0016] 2. This invention uses a low-power anomaly monitoring and wake-up system with triggered data acquisition, combined with the status judgment and wake-up command generation of the data processing unit. This avoids unnecessary components from running at high power continuously, while ensuring that the corresponding protective components can be accurately woken up in abnormal states, thus achieving a balance between on-demand energy saving and safety protection. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a half-sectional schematic diagram of the overall structure proposed in this invention; Figure 3 The present invention proposes Figure 2 Enlarged diagram of part A in the middle; Figure 4 The present invention proposes Figure 2 Enlarged diagram of section B; Figure 5 The present invention proposes Figure 2 Enlarged diagram of section C; Figure 6This is a block diagram of the low-power anomaly monitoring and wake-up system proposed in this invention.

[0018] The components in the diagram are numbered as follows: 1. Metering box; 2. Support platform; 3. Positioning block; 4. Exhaust platform; 5. First explosion-proof plug; 6. Second explosion-proof plug; 7. Positioning platform; 8. Blocking platform; 9. One-way ball; 10. Filter screen; 11. First fan; 12. Temperature and humidity sensor; 13. Dehumidifier; 14. Positioning plate; 15. Stepper motor; 16. Lead screw; 17. Guide rod; 18. Blocking block; 19. Mounting platform; 20. Electric push rod; 21. Second fan; 22. Sealing plate; 23. Sealing ring. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “group,” “class,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0021] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0022] Please refer to the following: Figures 1-6An energy-saving intelligent electricity metering box includes a metering box 1, which serves as a base for installing subsequent components. Multiple circuit breakers, fuses, and corresponding electricity meters are installed inside the metering box 1. A support platform 2 is fixed to the bottom of the metering box 1, providing support for the metering box 1. Multiple longitudinally penetrating guide slots are equidistantly spaced at the front end of the support platform 2, and a cable inlet slot is located in the middle of one side of the support platform 2. Positioning blocks 3 are installed on the upper and lower sides of the rear end of the metering box 1, allowing the metering box 1 to be hung on an external wall. An exhaust platform 4, communicating with the internal cavity, is installed on the upper and lower sides of one side of the metering box 1, preventing rainwater from entering the metering box due to gravity. Inside the metering box 1, a ventilation slot is provided to guide the heat dissipation of the electrical components inside the metering box 1, and the metering box 1 is provided with a ventilation slot that matches the ventilation platform 4; multiple first explosion-proof plugs 5 are installed at equal intervals from top to bottom on the middle of the other side of the metering box 1, through which external cables can be connected to the electrical components inside the metering box 1 through the plugs corresponding to the first explosion-proof plugs 5; and a second explosion-proof plug 6 is installed on one side of the bottom surface of the metering box 1; through the second explosion-proof plug 6, external cables can be connected to the circuit breaker inside the metering box 1 through the plugs corresponding to the second explosion-proof plug 6, and the second explosion-proof plug 6 serves as the incoming line element of the main circuit of the entire equipment; multiple irregularly shaped opening and closing doors are hinged at the front end of the metering box 1, and intelligent protection components are installed inside the metering box 1; It also includes a low-power anomaly monitoring and wake-up system integrated in metering box 1. The low-power anomaly monitoring and wake-up system includes a low-power monitoring unit, a data processing unit and an execution control unit, which are electrically connected in sequence and all are electrically connected to the intelligent protection component. The low-power monitoring unit is used to collect key abnormal parameters of metering box 1; The data processing unit has a pre-set parameter index library and historical index curve generation logic. The parameter index library contains the normal threshold values ​​of the corresponding indicators for each component of the intelligent protection component. With fault threshold ; Receive key anomaly parameters for analysis to obtain the indicators of each parameter, specifically: Let x be any key anomaly parameter, and set a monitoring time zone T. The number of samplings within monitoring time zone T is n, satisfying n≥1. The parameter value of the i-th sampling is denoted as... , i=1,2,...,n; The mean value of parameters within the monitoring time zone T is calculated using the arithmetic mean formula. The formula is ; The degree of parameter fluctuation within the monitoring time zone T is calculated using the standard deviation formula and recorded as the parameter fluctuation value. The formula is ; The upper limit of the normal threshold corresponding to the identified parameter is used as the limit value. The current value of the parameter is subtracted from the limit value to obtain the limit difference. Set a standard value for the parameter, and subtract the current value from the standard value to obtain the standard deviation. ; For the parameters at the current moment, the limit difference, standard deviation, parameter mean, and parameter fluctuation are weighted and fused to obtain the parameter index value. The formula is ;in, These represent the weighting coefficients for the parameter's limit difference, standard deviation, mean, and fluctuation value, respectively. The index values ​​of each parameter are matched with a preset parameter index library to determine the current status of the parameter, including normal, abnormal, and fault status: like If so, the parameter status is determined to be normal; if If so, the parameter status is determined to be abnormal; if If so, the parameter status is determined to be faulty; In abnormal states, parameter correlation analysis is performed, specifically as follows: The preset parameter correlation matrix R, where This indicates that there is a correlation between parameter x and parameter y (such as humidity being related to temperature or the opening degree of the exhaust duct). This indicates that parameters x and y are not related; extract all parameters that satisfy this condition. The associated parameter y; The linear correlation between parameter x and correlation parameter y within the monitoring time zone T is calculated using the Pearson correlation coefficient. The formula is as follows: ,in Let y be the mean of the correlation parameter. The larger the absolute value, the stronger the correlation. Preset correlation threshold If there exists an associated parameter y that satisfies If the state of y is abnormal / fault, it is determined to be an abnormal superposition, triggering a fault precursor warning; if all associated parameters y satisfy If the condition is normal, it is considered a normal fluctuation; It should be noted that the thresholds in the parameter index library can be dynamically updated based on historical data; When the similarity between the current indicator curve generated based on the indicators of each parameter and the indicator curve before the historical fault state meets the preset conditions, a wake-up command is generated and sent to the execution control unit, as follows: For any key anomaly parameter x, with time t as the horizontal axis, the index value of this parameter... Using the vertical axis as the ordinate, during the set continuous monitoring period... According to the preset sampling interval Record indicator values The changes in these factors form the current indicator curve. ,in This indicates the number of samples to be taken within a continuous monitoring period. Let i be the index value of the i-th sampling point; A pre-set library of historical pre-fault indicator curves, including the parameters during the same monitoring period before the fault occurred. The set of indicator curves within Among them, The index curve represents the parameter x before the j-th historical failure, and g is the number of historical failure cases; For the current indicator curve Indicator curves of parameters before historical failures The characteristic values ​​of the curves are extracted, including the peak and trough values, the mean slope, and the trend direction. Wherein, the peak value of the curve represents Valley value of the curve represents The formula for the mean slope of the curve is: Let D be the direction of the curve trend. When D=1, it indicates an upward trend; when D=-1, it indicates a downward trend; and when D=0, it indicates a stable trend. The current indicator curve is calculated using the Dynamic Time Warping (DTW) algorithm. Indicator curves compared to parameters prior to historical failures Similarity, specific steps: Construct a distance matrix M, where the element M(i,j) represents the Euclidean distance between the i-th point of the current curve and the j-th point of the historical curve: ,in Indicator curves representing parameters prior to historical failures The i-th index value; Calculate DTW distance That is, the sum of the minimum cumulative distance paths from M(1,1) to M(m,m) in matrix M: , where Path is the set of paths that satisfy the time order constraint; The DTW distance is converted into a similarity S, with a value ranging from [0,1]. A larger value indicates higher similarity. The formula is as follows: ; Preset similarity threshold and duration threshold The preset conditions are as follows: If there are index curves for parameters prior to historical failures. satisfy And the duration of this similarity state If the fault risk is high, the data processing unit will generate an emergency wake-up command. like But duration Then a warning wake-up command is generated; if If so, no wake-up command will be generated; After receiving a wake-up command, the execution control unit drives the corresponding component in the intelligent protection assembly to start operation, or maintains the low-power sleep state of non-critical components, specifically: The intelligent protection components are divided into critical components and non-critical components. The critical components include those that directly affect safety, such as the dehumidifier 13, the second fan 21, the electric actuator 20, and the stepper motor 15, denoted as the set. Non-critical components, including auxiliary monitoring or low-impact components such as partially redundant sensors, are denoted as a set. Maintain a low-power sleep state; drive All components related to abnormal parameters are started, and the operating power is calculated according to the formula: ,in The reference power of the component. As the urgency factor, The abnormal deviation rate, and , Indicates the maximum power limit in emergency situations; synchronously triggers linkage protection; drive When the core components (such as dehumidifier 13 and first fan 11) start, the operating power is calculated according to the formula: ,in This is the warning coefficient, and , The power limit is set to the normal operating level; non-core critical components (such as the electric actuator 20) are in standby mode and will only be activated if the parameters deteriorate further. When parameter index value ( (Indicates the normal threshold) and duration ( (Indicating the recovery threshold) The control unit drives key components to gradually reduce power to... Or it may trigger sleep mode, returning to low-power mode.

[0023] Specifically, the intelligent protection component includes a cylindrical positioning platform 7 horizontally and equidistantly installed on the bottom surface of the metering box 1. Multiple connecting slots are equidistantly opened on the outer side below the positioning platform 7. The positioning platform 7 facilitates the installation and restriction of the blocking platform 8 by welding. The blocking platform 8 is installed at an upward angle above the inner cavity of the positioning platform 7. The blocking platform 8 facilitates the use of the one-way ball 9 to limit the positioning platform 7. The bottom surface of the blocking platform 8 is equipped with a one-way ball 9, and the bottom surface of the one-way ball 9 abuts against the inner bottom surface of the positioning platform 7. The one-way ball 9 helps to prevent water from entering the metering box 1 in case of heavy rainfall.

[0024] Specifically, the intelligent protection components also include a filter screen 10 installed on the top surface of the positioning platform 7. The filter screen 10 helps prevent external insects or impurities from entering the metering box 1 with the first fan 11. The first fan 11 is installed on the top surface of the filter screen 10 and serves as the main heat dissipation device for the electrical components inside the metering box 1. Temperature and humidity sensors 12 are installed at the four corners of the inner wall at the rear end of the metering box 1. The temperature and humidity sensors 12 are used to detect the temperature and humidity inside the metering box 1. The model of the temperature and humidity sensor 12 is SN-3003-WS series. A dehumidifier 13 is installed in the middle of the top surface inside the metering box 1. A flexible rubber tube is connected to the middle of one side of the dehumidifier 13. A drain hole is opened on one side of the metering box 1 to allow the rubber tube to pass through. The dehumidifier 13, in conjunction with the temperature and humidity sensor 12, removes moisture from inside the metering box 1 to prevent excessive moisture from causing short circuits in the electrical components inside the metering box 1. The model of the dehumidifier 13 is ZC-WCS-15W.

[0025] Specifically, the intelligent protection component also includes horizontally mounted positioning plates 14 on the upper and lower sides of the inner wall of one side of the metering box 1. These positioning plates 14 facilitate the subsequent connection of stepper motors 15 via welding or external snap-fit ​​components. Stepper motors 15 are mounted at the midpoints of the adjacent ends of the two positioning plates 14, and the output shafts of both stepper motors 15 pass through their respective positioning plates 14. The stepper motors 15 facilitate the connection and drive of lead screws 16 using couplings. Furthermore, the output shafts of the stepper motors 15 are connected to the lead screws 16 via couplings, facilitating the connection of screws. The blocking block 18 is connected by a threaded connection; and guide rods 17 are vertically installed at the front and rear ends of the two positioning plates 14, which facilitates the smooth operation of the blocking block 18 during operation; the blocking block 18 is threadedly connected to the screw 16, and the blocking block 18 has an air guide groove that matches the exhaust groove, and guide holes that match the sliding of the guide rod 17 are vertically opened on both sides of the blocking block 18, which facilitates the closure of the air guide groove during heavy rain to prevent external water from entering; an external liquid level sensor is installed on the outside of the metering box 1 at the position corresponding to the blocking block 18 to detect changes in the external water level.

[0026] Specifically, the intelligent protection component also includes a mounting platform 19 installed in the middle of the inner wall of the other side of the metering box 1. A self-locking electric push rod 20 is installed horizontally at the front and rear ends of the top of the mounting platform 19, and a second fan 21 is installed between the mounting platforms 19. An emergency slot is opened on the other side of the metering box 1 to cooperate with the second fan 21.

[0027] Specifically, a longitudinal sliding groove is provided above the emergency slot, and a sealing plate 22 is slidably connected in the sliding groove. The upper side of the sealing plate 22 is fixed to the output shaft of the electric push rod 20, and a sealing groove is provided on the inner side wall of the sealing plate 22. A sealing ring 23 is installed in the sealing groove.

[0028] The metering box of this invention has two installation methods: it can be placed on the base surface via the support platform 2, or it can be installed on the base plate via the positioning block 3. Either method can be selected without affecting the protection logic. When connecting the circuit, the external secondary cabinet circuit is connected to the second explosion-proof plug 6, and other circuits under test are connected to the first explosion-proof plug 5. Power can be supplied after connection.

[0029] After the equipment is powered on, the temperature and humidity sensor 12 and the first fan 11 start. Cold air enters the chamber for heat dissipation through the positioning platform 7, the baffle platform 8, the one-way ball 9, and the filter screen 10, while hot air is discharged from the exhaust duct. In case of heavy rain, the temperature and humidity sensor 12 detects abnormal temperature and humidity and starts the dehumidifier 13 to discharge moisture. When the water level rises, the one-way ball 9 is squeezed to prevent water from entering, and the first fan 11 cannot draw air. If the temperature inside the chamber is too high, the electric push rod 20 drives the sealing plate 22 to open, and the second fan 21 starts to assist in heat dissipation.

[0030] When the level sensor detects a rise in water level, the stepper motor 15 on the lower positioning plate 14 drives the lead screw 16, which in turn causes the blocking block 18 to close the vent. The upper vent closes simultaneously, the sealing plate 22 resets and cooperates with the sealing ring 23 to seal, and all electrical equipment is shut down at the same time.

[0031] Specifically, the key abnormal parameters of the low-power monitoring unit include: Temperature and humidity parameters collected by temperature and humidity sensor 12, water level parameters collected by liquid level sensor outside metering box 1, operating electrical parameters (current, voltage) and action signals (displacement, extension, start and stop) of each component of intelligent protection component, and leakage signals of first explosion-proof plug 5 and second explosion-proof plug 6.

[0032] Specifically, the low-power monitoring unit uses a trigger-based acquisition method: When the metering box 1 is in an unused state (such as low current or no current), it operates in a preset low-frequency acquisition mode; when the key abnormal parameters acquired are close to the preset threshold, or when the component action signal of the intelligent protection component is detected (such as the displacement signal of the one-way ball 9 or the switch signal of the sealing plate 22), or when an abnormal environmental signal is detected, it switches to a preset high-frequency acquisition mode; after the acquisition is completed, the acquired data is packaged into a data packet and sent to the data processing unit.

[0033] Specifically, the low-power anomaly monitoring and wake-up system also includes a low-power power supply unit, which is electrically connected to the main power supply line and backup battery of the metering box 1. When the metering box 1 is not in use, the low-power power supply unit only provides the lowest power supply to the low-power monitoring unit and the data processing unit. When the main power supply line is interrupted, the low-power power supply unit automatically switches to backup battery power. Specifically, the wake-up linkage control logic of the execution control unit includes: when the dehumidifier 13 is woken up due to excessive humidity parameters, it is synchronously driven to start the dehumidifier 13 at the set power according to the deviation, and the stepper motor 15 is driven to drive the blocking block 18 to adjust the opening of the exhaust channel according to the degree of humidity deviation (the larger the deviation, the smaller the opening) to reduce the entry of external moisture; when the dehumidifier is woken up due to increased water level parameters, it is synchronously driven to drive the electric push rod 20 to drive the sealing plate 22 to close the emergency channel, drive the stepper motor 15 to close the exhaust channel, and the starting power of the second fan 21 does not exceed the preset ratio of its preset power upper limit (to avoid high power operation and increased energy consumption); when the dehumidifier is woken up due to leakage signal, the circuit breaker in the metering box 1 is triggered to cut off the power supply first, and then other protective components are driven to act.

[0034] It should be noted that the software simulation and preset parameter determination are as follows: For core parameters such as the calculation of parameter indicators (e.g., weight coefficient, similarity judgment) and correlation investigation (e.g., correlation threshold) in the low power anomaly monitoring wake-up system, software simulation is performed using a large amount of real-world scenario data (including data on different temperatures, humidity levels, water levels, and component operating statuses) to fit a calculation logic and parameter range that closely approximates actual working conditions. The preset parameters (e.g., emergency coefficient, warning coefficient, power upper limit) are flexibly set by those skilled in the art based on the actual situation such as the deployment scenario of the metering box (outdoor residential area / industrial plant) and climate conditions to ensure adaptability.

[0035] Implementation: The above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it is presented in the form of a computer program product. The computer program product contains computer instructions. When loaded or executed on a computer (such as the local processor of the metering box or a remote server), it can trigger processes such as low-power parameter acquisition, index calculation, wake-up instruction generation, and component control to realize the core functions of this solution. The computer instructions can be transmitted between the metering box and the remote server via wired / wireless (such as LoRa or Ethernet) methods and stored in a computer-readable storage medium (such as a solid-state ATA hard drive, ROM, or USB flash drive). The medium must be compatible with the low-power operation requirements of the metering box.

[0036] It should be noted that the execution order of each process is determined by the functional logic and does not depend on the sequence number; the functions of each unit (low power monitoring, data processing, execution control) in this solution can be implemented by hardware (such as dedicated chips) or software (algorithm program), and the specific method depends on the design constraints of the application scenario, and none of them exceed the protection scope of this solution.

[0037] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0038] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An energy-saving intelligent electricity metering box, characterized in that, The metering box (1) is fixed to the bottom surface of the metering box (1). The front end of the support platform (2) is provided with multiple longitudinal through-flow channels at equal intervals. The middle of one side of the support platform (2) is provided with an inlet channel. Positioning blocks (3) are installed on the upper and lower sides of the rear end of the metering box (1). An exhaust platform (4) communicating with the inner cavity is installed on the upper and lower sides of one side of the metering box (1). The metering box (1) is provided with an exhaust channel that cooperates with the exhaust platform (4). Multiple first explosion-proof plugs (5) are installed at equal intervals from top to bottom on the middle of the other side of the metering box (1). A second explosion-proof plug (6) is installed on one side of the bottom surface of the metering box (1). Multiple irregular opening and closing doors are hinged to the front end of the metering box (1). Intelligent protection components are installed inside the metering box (1). It also includes a low-power anomaly monitoring and wake-up system integrated in the metering box (1), the low-power anomaly monitoring and wake-up system including a low-power monitoring unit, a data processing unit and an execution control unit; The low-power monitoring unit is used to collect key abnormal parameters of the metering box (1); The data processing unit is pre-set with a parameter index library and historical index curve generation logic. The parameter index library contains normal thresholds and fault thresholds for corresponding indicators of each component of the intelligent protection component. It receives key abnormal parameters and analyzes them to obtain the indicators of each parameter. It matches the indicators of each parameter with the pre-set parameter index library to determine the current state of the parameter, including normal, abnormal, and fault states. In the abnormal state, it performs parameter correlation investigation and analysis. When the similarity between the current index curve generated based on the indicators of each parameter and the index curve before the historical fault state meets the preset conditions, it generates a wake-up command and sends it to the execution control unit. After receiving a wake-up command, the execution control unit drives the corresponding component in the intelligent protection component to start operation, or maintains the low-power sleep state of non-critical components.

2. The energy-saving intelligent power metering box according to claim 1, characterized in that, The intelligent protection component includes a cylindrical positioning platform (7) that is horizontally and equidistantly installed on the bottom surface of the metering box (1). Multiple connecting slots are equidistantly opened on the outer side below the positioning platform (7), and an upward-tilting blocking platform (8) is installed above the inner cavity of the positioning platform (7). A one-way ball (9) is installed on the bottom surface of the blocking platform (8), and the bottom surface of the one-way ball (9) abuts against the inner bottom surface of the positioning platform (7).

3. The energy-saving intelligent power metering box according to claim 2, characterized in that, The intelligent protection component also includes a filter screen (10) installed on the top surface of the positioning platform (7), and a first fan (11) is installed on the top surface of the filter screen (10); temperature and humidity sensors (12) are installed at the four corners of the inner wall of the rear end of the metering box (1), and a dehumidifier (13) is installed in the middle of the top surface of the metering box (1); a flexible rubber tube is connected to the middle of one side of the dehumidifier (13), and a drain hole is opened on one side of the metering box (1) to accommodate the rubber tube.

4. The energy-saving intelligent power metering box according to claim 3, characterized in that, The intelligent protection component also includes positioning plates (14) installed horizontally on the upper and lower sides of the inner wall of one side of the metering box (1). A stepper motor (15) is installed in the middle of the near ends of the two positioning plates (14). The output shafts of the two stepper motors (15) pass through the corresponding positioning plates (14), and the output shafts of the stepper motors (15) are connected to a lead screw (16) through a coupling. A guide rod (17) is installed vertically at the front and rear ends of the far ends of the two positioning plates (14). The lead screw (16) is threadedly connected to a blocking block (18). The blocking block (18) has an air guide groove that matches the exhaust groove, and the blocking block (18) has guide holes that match the sliding of the guide rod (17) on both sides.

5. The energy-saving intelligent power metering box according to claim 3, characterized in that, The intelligent protection component also includes an installation platform (19) installed in the middle of the inner wall of the other side of the metering box (1). A self-locking electric push rod (20) is installed horizontally at the front and rear ends of the top of the installation platform (19), and a second fan (21) is installed between the installation platforms (19). An emergency slot for cooperating with the second fan (21) is opened on the other side of the metering box (1).

6. The energy-saving intelligent power metering box according to claim 5, characterized in that, A longitudinal sliding groove is provided above the emergency slot, and a sealing plate (22) is slidably connected in the sliding groove. The upper side of the sealing plate (22) is fixed to the output shaft of the electric push rod (20), and a sealing groove is provided on the inner side wall of the sealing plate (22). A sealing ring (23) is installed in the sealing groove.

7. The energy-saving intelligent power metering box according to claim 3, characterized in that, The key abnormal parameters of the low-power monitoring unit specifically include: The temperature and humidity parameters collected by the temperature and humidity sensor (12), the water level parameters collected by the liquid level sensor on the outside of the metering box (1), the operating electrical parameters and action signals of each component of the intelligent protection component, and the leakage signals of the first explosion-proof plug (5) and the second explosion-proof plug (6).

8. The energy-saving intelligent power metering box according to claim 1, characterized in that, Receive key anomaly parameters for analysis to obtain the indices for each parameter, specifically: Let x be any key anomaly parameter, and set a monitoring time zone T. The number of samplings within monitoring time zone T is n, satisfying n≥1. The parameter value of the i-th sampling is denoted as... , i = 1,2,...,n; The mean value of parameters within the monitoring time zone T is calculated using the arithmetic mean formula. The formula is ; The degree of parameter fluctuation within the monitoring time zone T is calculated using the standard deviation formula and recorded as the parameter fluctuation value. The formula is ; The upper limit of the normal threshold corresponding to the identified parameter is used as the limit value. The current value of the parameter is subtracted from the limit value to obtain the limit difference. Set a standard value for the parameter, and subtract the current value from the standard value to obtain the standard deviation. ; For the parameters at the current moment, the limit difference, standard deviation, parameter mean, and parameter fluctuation are weighted and fused to obtain the parameter index value. The formula is ;in, These represent the weighting coefficients for the parameter's limit difference, standard deviation, mean, and fluctuation value, respectively.

9. The energy-saving intelligent power metering box according to claim 1, characterized in that, The low-power anomaly monitoring and wake-up system also includes a low-power power supply unit, which is electrically connected to the main power supply line and backup battery of the metering box (1). When the metering box (1) is not in use, the low-power power supply unit provides the lowest power supply only to the low-power monitoring unit and the data processing unit. When the main power supply line is interrupted, the low-power power supply unit automatically switches to backup battery power supply.

10. An energy-saving intelligent power metering box according to claim 7, characterized in that, In abnormal states, parameter correlation analysis is performed, specifically as follows: The preset parameter correlation matrix R, where This indicates that there is a correlation between parameter x and parameter y (such as humidity being related to temperature or the opening degree of the exhaust duct). This indicates that parameters x and y are not related; extract all parameters that satisfy this condition. The associated parameter y; The linear correlation between parameter x and correlation parameter y within the monitoring time zone T is calculated using the Pearson correlation coefficient. The formula is as follows: ,in Let y be the mean of the correlation parameter. The larger the absolute value, the stronger the correlation; Preset correlation threshold If there exists an associated parameter y that satisfies If the state of y is abnormal / faulty, it is determined to be an abnormal superposition, triggering a fault precursor warning; If all associated parameters y satisfy If the condition is normal, it is considered a normal fluctuation.

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