Intelligent electric meter

Abstract

The invention relates to the technical field of intelligent electric meters, in particular to an intelligent electric meter, which comprises the following modules: an information acquisition module used for acquiring weather temperature and humidity, power consumption information and household appliance information; the data processing module is used for identifying the electricity consumption of the household electrical appliance and judging the running state of the household electrical appliance; the display module is used for a user to check the electricity utilization information and the running state information of the household appliances; the storage module is used for storing household appliance information and power consumption data; and the transmission module is used for data transmission among the modules. According to the invention, environment and time aging factors are introduced, a scientific and reasonable judgment method is set, and by means of the metering function of the electricity meter, the electricity consumption condition of each household electrical appliance can be accurately detected, the actual operation condition of the household electrical appliance can be accurately judged, a user can conveniently manage the household electrical appliance, the household electrical appliance is kept in a good working state, and the user experience is improved. The operation efficiency of the household electrical appliance is improved, energy waste is reduced, and the service life of the household electrical appliance is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of smart electric meters, and in particular to a smart electric meter. Background Art

[0002] The main function of traditional electric meters is to record the total power consumption, and they lack the ability to manage and monitor household appliances in detail. With the continuous development of smart homes and energy management systems, users have an increasing demand for power consumption information. However, most households currently have one electric meter, and all household appliances are connected to the meter, which makes it impossible for the meter to accurately obtain the individual power consumption of each household appliance, nor to obtain more power consumption information.

[0003] As household appliances grow older with years of use, the power of household appliances varies greatly due to different personal usage habits, differences in the temperature and humidity of the storage environment of household appliances, and different maintenance conditions. Existing smart meters cannot accurately judge the actual operating status of household appliances and cannot help users achieve refined management of household appliances. There is a problem of high energy waste in household appliances and a high risk of losses caused by abnormal conditions.

[0004] Publication number: CN117009855A A method for analyzing power consumption anomalies based on a power consumption habit feature model, including a power consumption model training strategy, a power consumption identification strategy, an anomaly analysis strategy, and a model correction strategy; a power consumption model based on power consumption equipment can be established, and then the power consumption waveform corresponding to the power consumption characteristics in the power consumption waveform generated by a power consumption end can be determined according to the power consumption habit feature model, and then the waveform can be split to determine whether the waveform is within the normal range, and feedback or abnormality can be judged based on the remaining waveform, so that abnormal conditions such as line aging and contact oxidation can be discovered at the first time, and timely maintenance can be carried out to avoid safety hazards. Due to the need to train the power consumption model, the sample feature database will store a lot of historical data, which puts forward high requirements on the storage and computing power of the equipment, and it is also impossible to determine the specific operating status of household appliances.

[0005] Therefore, there is a need for a smart meter that can monitor and determine the actual operating status of household appliances in real time. Summary of the invention

[0006] In view of this, the present invention aims to provide a smart electric meter to solve the problem that the existing electric meter cannot monitor and judge the actual operating status of household appliances in real time.

[0007] Existing smart meters use historical data to determine whether an appliance is in an abnormal state. Such abnormal states mainly include line aging, contact oxidation and other abnormal conditions. The focus is on timely maintenance to avoid safety hazards. It cannot distinguish between the power differences caused by emergency conditions, normal operation and general failures, and cannot help users achieve daily management of appliances.

[0008] In particular, after long-term use, the power of household appliances will gradually increase due to factors such as equipment aging, poor maintenance, and component wear. However, this change is difficult to detect in a short period of time, and it will not affect the basic functions of household appliances. It is impossible to truly judge the operating status of household appliances by comparing recent historical data. This has caused the existing smart meters to either set the threshold too high and wait for small equipment failures to gradually cause larger failures, making the household appliances unable to work or causing an emergency; or the threshold is set too low. As the age of household appliances changes, the external use environment changes, or the use situation changes, the threshold needs to be adjusted frequently, which brings great inconvenience to use.

[0009] The present invention introduces environmental and time aging factors, sets up a scientific and reasonable judgment method, and with the help of the metering function of the electric meter, can accurately detect the power consumption of each household appliance and accurately judge the actual operation of the household appliances, so as to facilitate users to manage the household appliances and keep them in a good working state, improve the operation efficiency of the household appliances, help reduce energy waste, extend the service life of household appliances, and reduce the frequency of damage to household appliances.

[0010] The technical solution of the present invention is achieved in this way:

[0011] The present invention discloses a smart electric meter, comprising the following modules:

[0012] Information collection module, used to collect weather temperature and humidity, electricity consumption information and household appliance information;

[0013] A data processing module, used to identify the power consumption of household appliances and determine the operating status of household appliances;

[0014] Display module, used for users to view power consumption information and household appliances operating status information;

[0015] A storage module, used for storing household appliance information and power consumption data;

[0016] The transmission module is used for data transmission between various modules.

[0017] Furthermore, the household appliance information includes product type, rated power and production date, and the household appliance operating status includes normal operation, abnormal status, poor maintenance and equipment aging.

[0018] Furthermore, the information collection module includes a temperature sensor, a humidity sensor, an electricity meter module and an input module. The temperature sensor is used to detect weather temperature, the humidity sensor is used to detect air humidity, the electricity meter module is used to collect electricity consumption information of household appliances, and the input module is used to obtain household appliance information.

[0019] Furthermore, the electricity metering module collects the electricity consumption information of household appliances, including the total electricity consumption of household appliances and the electricity consumption information of individual household appliances, including the following specific steps:

[0020] S1: Turn on a household appliance first, and the power meter module collects the power consumption and current changes of the circuit from the time the household appliance is turned on to the time it works normally;

[0021] S2: The power meter module collects the power consumption and current changes on the circuit during the normal operation of household appliances in S1;

[0022] S3: Turn off the household appliances in S1, and the power meter module collects the power consumption and current changes on the line when the household appliances in S1 stop operating and completely shut down;

[0023] S4: The power consumption and current changes collected in S1-S3 constitute the power consumption characteristics of the household appliances, and the power metering module transmits the power consumption characteristics of the household appliances to the storage module for storage;

[0024] S5: The electricity meter module collects electricity consumption characteristics of other household appliances one by one, and repeats the above steps S1-S4;

[0025] S6: Finally, all household appliances are turned on, and the power meter module collects the power consumption characteristics of the line when all household appliances are working at the same time and stores them in the storage module.

[0026] Furthermore, the operation steps of the input module are: the user takes a picture of the nameplate of the household appliance and uploads the nameplate image to the input module, and the input module collects the household appliance information through image recognition technology; or the user directly manually inputs the household appliance information through the input module.

[0027] Furthermore, the formula for determining the operating status of household appliances is 1:

[0028] Where: k is the environmental impact coefficient;

[0029] P1 is the actual power of household appliances;

[0030] P 10 The rated power of household appliances;

[0031] a is the annual increase percentage of household electrical appliances power;

[0032] date is the current date;

[0033] T is the production date of the household appliance.

[0034] Further, the method for controlling and judging the operating status of household appliances:

[0035] S1: The electricity meter module detects a change in household electricity consumption and transmits the electricity consumption information to the data processing module through the transmission module;

[0036] S2: The data processing module receives the power consumption information transmitted by the information collection module, calls the power consumption characteristics of household appliances in the matching storage module, and determines the specific household appliances and their actual power P1;

[0037] S3: The data processing module retrieves the corresponding household appliance information in the storage module to obtain the rated power P10, product type, and production date T.

[0038] S4: Determine the operating status of the household appliance according to formula 1.

[0039] Furthermore, when the temperature range is 0-30°C and the humidity is below 85%, the k value is 1;

[0040] When δ≤-0.2, the household appliances are in abnormal state and it is recommended to cut off the power immediately;

[0041] When -0.2<δ≤-0.1, the household appliances are not well maintained and inspection and maintenance are recommended;

[0042] When -0.1<δ≤0.1, household appliances operate normally;

[0043] When 0.1<δ≤0.2, the household appliances are not well maintained and inspection and maintenance are recommended;

[0044] When δ>0.2, the household appliance is in abnormal state and the power is cut off immediately;

[0045] When P1 / P 10 When >1.5 and δ≤0.2, the household appliances are aging and it is recommended to replace them.

[0046] Furthermore, when the temperature is above 35°C and the humidity is above 85%, the k value is 1.2.

[0047] When δ≤-0.3, the household appliances are in abnormal state and it is recommended to cut off the power immediately;

[0048] When -0.3<δ≤-0.2, the household appliances are not well maintained and inspection and maintenance are recommended;

[0049] When -0.2<δ≤0.2, household appliances operate normally;

[0050] When 0.2<δ≤0.3, the household appliances are not well maintained and inspection and maintenance are recommended;

[0051] When δ>0.3, the household appliance is in abnormal state and the power is cut off immediately.

[0052] Furthermore, the display module supports a variety of display modes, including a combination of charts, text and icons, so that users can intuitively view power consumption information and household appliance operating status information.

[0053] Compared with the prior art, the smart meter of the present invention has the following advantages:

[0054] 1. The present invention introduces environmental and time aging factors, sets up a scientific and reasonable judgment method, and with the help of the metering function of the electric meter, can accurately detect the power consumption of each household appliance and accurately judge the actual operation of the household appliances, so that users can manage the household appliances to keep them in a good working state, improve the operation efficiency of household appliances, help reduce energy waste, extend the service life of household appliances, and reduce the frequency of damage to household appliances.

[0055] 2. The present invention can reduce the impact of weather temperature and humidity changes and increased usage time on the power threshold setting of smart meters by setting a reasonable method for judging the actual operation status of household appliances, thereby avoiding the inconvenience caused by frequent adjustment of the threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0057] Figure 1 This is the structure diagram of the smart meter;

[0058] Figure 2 This is a diagram of how the smart meter determines the operating status of household appliances when k is 1. DETAILED DESCRIPTION

[0059] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0060] It should be noted that all the terms used in the present invention to indicate directionality and position, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "lower", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state, and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0061] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0063] The first object of the present invention is to disclose a smart electric meter, comprising the following modules:

[0064] Information collection module, used to collect weather temperature and humidity, electricity consumption information and household appliance information;

[0065] A data processing module, used to identify the power consumption of household appliances and determine the operating status of household appliances;

[0066] Display module, used for users to view power consumption information and household appliances operating status information;

[0067] A storage module, used for storing household appliance information and power consumption data;

[0068] The transmission module is used for data transmission between various modules.

[0069] The information collection module collects weather temperature and humidity information, which can be used to analyze the impact of the environment on electricity consumption, effectively distinguish the impact of weather temperature and humidity on the working power of household appliances, avoid power fluctuations of household appliances due to weather reasons, and misjudge the operating status of household appliances.

[0070] Electricity usage information includes total electricity usage, electricity usage by time period, etc. Accurate metering of electricity usage information can facilitate the statistics of users' electricity usage on the one hand, and on the other hand, it can also facilitate users to view and manage electricity usage information.

[0071] Household appliance information includes product type, rated power and production date. Collecting household appliance information can facilitate the device to accurately and quickly determine the power consumption information of household appliances, reduce the difficulty of identification and judgment, and facilitate the device to judge the actual operating status of household appliances.

[0072] Through the algorithm built into the storage module, the data processing module uses the algorithm to identify the power consumption of different household appliances, and judge the operating status of household appliances, distinguishing between normal operation, abnormal status, poor maintenance, equipment aging, etc. The display module receives power consumption information and operating status information of household appliances, and displays this information on the user terminal, helping users to promptly discover and solve problems such as appliance failure, aging, and power increase caused by improper use, thereby improving electricity safety and efficiency.

[0073] This setting can accurately determine the operating status of household appliances through comprehensive information collection and intelligent analysis, allowing users to arrange electricity use more reasonably and manage household appliances in a refined manner, reduce waste, improve energy utilization efficiency, promptly detect and handle electrical faults, reduce the occurrence of safety accidents, and improve electricity safety.

[0074] Specifically, household appliance information includes product type, rated power and production date; household appliance operating status includes normal operation, abnormal status, poor maintenance and equipment aging.

[0075] Product type refers to the type of household appliances, such as air conditioners, refrigerators, washing machines, televisions, etc. By entering the product type, it is convenient to determine the electricity usage characteristics of household appliances according to the product type, help smart meters quickly identify and classify the electricity usage of household appliances, and provide targeted energy-saving and maintenance suggestions.

[0076] Rated power refers to the nominal power of household appliances under normal working conditions, usually in watts. Entering the rated power can serve as an important reference for smart meters to determine the operating status of household appliances. It can also help users estimate the energy consumption of each appliance, arrange electricity use plans reasonably, and provide energy-saving suggestions based on the rated power, such as choosing low-power appliances or optimizing usage time.

[0077] The production date refers to the date on which the household appliance was manufactured. The smart meter can use the production date to determine the service life of the appliance. Based on the normal annual power increase of the household appliance stored in the storage module, it can accurately determine the operating status of the household appliance and determine whether maintenance or replacement is required in a timely manner.

[0078] Normal operation means that the appliance is working properly without any faults. Users can use the appliance without worrying about faults.

[0079] An abnormal state indicates that the appliance has a fault, such as short circuit, overheating, failure to start, etc. When an abnormal state is detected, the user can take timely measures to avoid greater damage, provide safety warnings, and prevent accidents.

[0080] Poor maintenance means that the appliance needs maintenance, such as filter blockage, poor heat dissipation, etc. Smart meters can judge the operating status of home appliances and remind users to maintain them. This can restore their optimal performance, improve energy efficiency, extend the service life of appliances, reduce the probability of abnormal situations, and improve safety.

[0081] Equipment aging means that the performance of an appliance has deteriorated after a long period of use and may need to be replaced. Smart meters determine that household appliances are in an aging state, at which point the performance of the appliance has deteriorated significantly, resulting in large energy losses and waste, and remind users to evaluate the performance of the appliance and decide whether it needs to be replaced.

[0082] This setting facilitates users to manage home appliances in a refined manner by recording the product type, rated power and production date of home appliances in detail, and judging their operating status. It significantly improves electricity efficiency and safety, extends the life of appliances, provides a user-friendly experience, and supports remote monitoring and management.

[0083] Specifically, the information collection module includes a temperature sensor, a humidity sensor, an electricity meter module and an input module. The temperature sensor is used to detect the air temperature, the humidity sensor is used to detect the air humidity, the electricity meter module is used to collect electricity consumption information of household appliances, and the input module is used to obtain household appliance information.

[0084] Through the temperature sensor and humidity sensor, the ambient temperature and humidity are monitored in real time to provide accurate environmental data for the smart meter; through the power meter module, the power consumption of household appliances is counted in real time, and detailed energy consumption data is provided. According to the power consumption and electricity price, the electricity bill is estimated to help users arrange the electricity budget reasonably. By analyzing the power consumption data, energy-saving suggestions are provided, such as staggered power consumption and optimized usage time, so as to reduce energy waste; through the input module, detailed information of each appliance is recorded for easy management and maintenance. The performance and service life of the appliance are evaluated through the rated power and production date, and maintenance and replacement suggestions are provided. Combined with the operating status information, it helps users quickly diagnose appliance failures, repair them in time, and extend the life of the appliance.

[0085] This setting uses temperature sensors, humidity sensors, power meter modules and input modules to monitor ambient temperature and humidity in real time, accurately count the power consumption of household appliances, record detailed information of appliances, assist the data processing module in judging the power consumption and operating status of household appliances, and provide better and more detailed energy consumption analysis and household appliance management suggestions.

[0086] Specifically, the electricity metering module collects the electricity consumption information of household appliances, including the total electricity consumption of household appliances and the electricity consumption information of individual household appliances, including the following specific steps:

[0087] S1: Turn on a household appliance first, and the power meter module collects the power consumption and current changes of the circuit from the time the household appliance is turned on to the time it works normally;

[0088] S2: The power meter module collects the power consumption and current changes on the circuit during the normal operation of household appliances in S1;

[0089] S3: Turn off the household appliances in S1, and the power meter module collects the power consumption and current changes on the line when the household appliances in S1 stop operating and completely shut down;

[0090] S4: The power consumption and current changes collected in S1-S3 constitute the power consumption characteristics of the household appliances, and the power metering module transmits the power consumption characteristics of the household appliances to the storage module for storage;

[0091] S5: The electricity meter module collects electricity consumption characteristics of other household appliances one by one, and repeats the above steps S1-S4;

[0092] S6: Finally, all household appliances are turned on, and the power meter module collects the power consumption characteristics of the line when all household appliances are working at the same time and stores them in the storage module.

[0093] The electricity meter module can collect the total electricity consumption of the entire family, including the total energy consumption of all electrical appliances, provide the family's overall electricity consumption, help users understand the family's total energy consumption, and facilitate users to estimate the family's total electricity bill based on the total electricity consumption and electricity price, helping users to reasonably arrange electricity budgets.

[0094] Since the current of different types of household appliances when turned on is significantly different, it is mainly affected by the power, design and purpose of the appliance. Even for appliances of the same type, appliances of different models or powers will have different currents when turned on. For household appliances of the same model, due to the problem of manufacturing errors, there are also slight differences in the current when turned on. This difference is 0.1-0.5A, and a smart meter with a measurement accuracy of 0.1A can accurately measure this difference. The power meter module can also use other methods to identify the power consumption of different household appliances. The power meter module can collect power consumption of each household appliance one by one, record the power consumption change information of each appliance in the circuit during the entire process of starting up and running a single time, and collect the power consumption characteristics of the power consumption waveform and store the characteristics in the storage module, so as to facilitate the data processing module to call and identify household appliances, and facilitate subsequent analysis.

[0095] Specifically, the power meter module can also be connected to the smart socket through wireless or wired communication to accurately measure the power of each household appliance.

[0096] The power meter module does not need to detect the power consumption information of each household appliance, which greatly reduces the operating procedures for connecting household appliances to the circuit, improves the detection accuracy of the smart meter for the power used by each household appliance, reduces the difficulty of identifying the power consumption information of household appliances, reduces the amount of calculation and data storage of power consumption information data, and reduces the requirements for the computing and storage capabilities of the smart meter. At the same time, the use of smart sockets can improve the control ability of the smart meter for a single household appliance, and can control the power on and off of the household appliance according to the feedback of the power consumption information.

[0097] Specifically, the operation steps of the input module are: the user takes a picture of the nameplate of the household appliance and uploads the nameplate image to the input module, and the input module collects the household appliance information through image recognition technology; or the user directly manually inputs the household appliance information through the input module.

[0098] Through image recognition technology, users only need to take a photo of the nameplate and upload it, without having to manually enter a large amount of information. The operation is simple and fast. Image recognition technology can automatically identify the information on the nameplate, reduce human input errors, and improve data accuracy. Automated collection greatly reduces the user's time and energy and improves the efficiency of information entry.

[0099] For appliances without nameplates or with incomplete nameplate information, users can choose to enter manually to ensure that all appliance information can be recorded. More detailed information can be entered, such as purchase date, warranty information, etc., to ensure the integrity of the information. This is suitable for all types of appliances, including old appliances or homemade devices without nameplates.

[0100] Through the entry module, this setting allows users to easily collect and record detailed information about household appliances, including product type, rated power and production date. Whether through image recognition technology of photographing the nameplate or manual input, the accuracy and completeness of the information can be ensured, which not only helps users better manage household appliances, but also helps with household energy consumption analysis and household appliance fault diagnosis.

[0101] Specifically, the data processing module includes a microcontroller or processor, which is used to perform data processing tasks, including data acquisition, calculation, storage and communication. The microcontroller or processor inherits the RTC function, and can also expand the time function through an external RTC chip, or obtain the current time date through an Ethernet controller or Wi-Fi module.

[0102] Specifically, the formula for judging the operating status of household appliances is 1:

[0103] Where: k is the environmental impact coefficient;

[0104] P1 is the actual power of household appliances;

[0105] P 10 The rated power of household appliances;

[0106] a is the annual increase percentage of household electrical appliances power;

[0107] date is the current date;

[0108] T is the production date of the household appliance.

[0109] This setting introduces the environmental impact coefficient k, which takes into account the impact of ambient temperature and humidity on the power of household appliances. At the same time, it reasonably evaluates the aging of the equipment, accurately identifies the operating conditions of the appliances, improves the accuracy of judgment, and promptly discovers household appliance failures, enabling users to manage household appliances in a refined manner, avoiding greater losses caused by failures, improving electricity efficiency and safety, and extending the service life of appliances.

[0110] Specifically, the method for controlling and judging the operating status of household appliances is as follows:

[0111] S1: When household electricity consumption changes, the electricity metering module transmits the electricity consumption information to the data processing module through the transmission module;

[0112] S2: The data processing module receives the power consumption information transmitted by the information collection module, calls the power consumption characteristics of household appliances in the matching storage module, and determines that the actual power of the household appliances is P1;

[0113] S3: The data processing module retrieves the household appliance information of the household appliance in the storage module and obtains the rated power P 10 , product type, and production date T.

[0114] S4: Determine the operating status of the household appliance according to formula 1.

[0115] By monitoring the changes in household electricity consumption in real time, we can promptly discover and respond to changes in the operating status of household appliances, and then use the matching of electricity consumption characteristics to accurately identify the household appliances in use and improve the accuracy of judgment. Then, we can obtain detailed information about the household appliances, including rated power, product type and production date, to provide the necessary parameters for judging the operating status. Finally, we can use the formula to accurately judge the operating status of the household appliance.

[0116] Through the above-mentioned control and judgment method, this setting can monitor the operating status of household appliances in real time, accurately identify the operating conditions of appliances, discover faults in a timely manner, evaluate the aging degree of equipment, and provide maintenance and replacement suggestions.

[0117] Specifically, when the temperature range is 0-30°C and the humidity is below 85%, the k value is 1;

[0118] When δ≤-0.2, the household appliances are in abnormal state and it is recommended to cut off the power immediately;

[0119] When -0.2<δ≤-0.1, the household appliances are not well maintained and inspection and maintenance are recommended;

[0120] When -0.1<δ≤0.1, household appliances operate normally;

[0121] When 0.1<δ≤0.2, the household appliances are not well maintained and inspection and maintenance are recommended;

[0122] When δ>0.2, the household appliance is in abnormal state and the power is cut off immediately;

[0123] When P1 / P 10 When >1.5 and δ≤0.2, the household appliances are aging and it is recommended to replace them.

[0124] When the temperature and humidity conditions are 0-30℃ and the humidity is below 85%, the k value is 1. Under this condition, the actual working power of household appliances can be as close to the rated power as possible, avoiding the large difference between the ambient temperature and humidity and the normal working temperature that affects the use of household appliances, thereby interfering with the smart meter's accurate judgment of the operating status of household appliances.

[0125] δ value conditions:

[0126] When δ≤-0.2 or δ>0.2, it indicates that the household appliance may have a serious fault or abnormality, which may be caused by damage or aging of internal components. At this time, it is recommended to cut off the power immediately to prevent further damage or safety hazards.

[0127] When -0.2<δ≤-0.1 or 0.1<δ≤0.2, it indicates that there may be some minor problems with the home appliance, which may lead to reduced efficiency or shortened life. Inspection and necessary maintenance are recommended to restore its optimal performance.

[0128] When -0.1<δ≤0.1, it indicates that the household appliance is in good working condition and no special attention is needed.

[0129] P1 / P 10 >1.5 and δ≤0.2: This condition combines the power ratio and δ value to assess the aging of household appliances. If an appliance's power ratio exceeds 1.5 and its δ value does not exceed 0.2, then the appliance may have reached the end of its service life and it is recommended to consider replacing it to avoid future failures or reduced efficiency and reduce energy waste.

[0130] By regularly monitoring these parameters, users can detect potential problems in advance and take appropriate measures to reduce unexpected downtime and maintenance costs. Timely detection and handling of abnormal situations can effectively avoid safety accidents such as electrical fires. Correct maintenance and timely replacement can help extend the service life of household appliances and save long-term costs. At the same time, keeping household appliances in good condition can improve energy efficiency, reduce unnecessary energy consumption, and also play a positive role in environmental protection.

[0131] Specifically, when the temperature is above 35° C. and the humidity is above 85%, the k value is 1.2, and the judgment range of δ is expanded accordingly.

[0132] When the weather temperature reaches above 35℃ and the humidity exceeds 85%, the environmental conditions become more severe, which poses a greater challenge to the normal operation of household appliances. In this case, setting the k value to 1.2 and adjusting the judgment range of δ can more accurately reflect the working status of appliances in extreme environments.

[0133] The adjusted range might look like this (assuming an adjustment of ±0.1):

[0134] When δ≤-0.3, the household appliance is in an abnormal state and it is recommended to cut off the power immediately.

[0135] When -0.3<δ≤-0.2, the household appliances are poorly maintained and inspection and maintenance are recommended.

[0136] When -0.2<δ≤0.2, household appliances operate normally.

[0137] When 0.2<δ≤0.3, the household appliances are poorly maintained and inspection and maintenance are recommended.

[0138] When δ>0.3, the household appliance is in abnormal state and the power is cut off immediately.

[0139] Such adjustments can avoid misjudgments due to environmental factors and make the assessment more accurate.

[0140] By adjusting the judgment range of k value and δ, this setting can better adapt to harsh environments such as high temperature and high humidity, ensure the accuracy of evaluation results, reduce false alarms caused by environmental influences, avoid unnecessary maintenance or replacement, and help identify electrical appliances that really need maintenance or replacement, thereby improving the pertinence and efficiency of maintenance work. Through more accurate evaluation, users can better understand the energy efficiency performance of electrical appliances in different environments, take corresponding energy-saving measures, and reduce energy consumption.

[0141] The data processing module calculates the actual operating status and power consumption of the household appliances based on the collected data, and transmits it to the display module through the transmission module, so that users can view the power consumption and operating status information of the household appliances.

[0142] Specifically, the display module supports multiple display modes, including a combination of charts, text and icons, so that users can intuitively view power consumption information and household appliance operating status information.

[0143] Through line graphs, bar graphs, pie charts and other forms, it intuitively displays data such as power consumption, power consumption trends, peak time, etc., and uses graphic symbols to quickly convey key information, such as warning, normal, abnormal and other status, to help users understand specific data and status, meet the usage habits of different users, and display historical data in the form of charts, so that users can more easily analyze data and discover power usage patterns and potential problems.

[0144] The display module supports the design of multiple display modes, which not only improves the efficiency and accuracy of information transmission, but also greatly enhances the user experience and the overall performance of the system, helping to improve user satisfaction, enhance decision support, improve safety and promote energy conservation and environmental protection.

[0145] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A smart electric meter, characterized in that: Includes the following modules: Information collection module, used to collect weather temperature and humidity, electricity consumption information and household appliance information; A data processing module, used to identify the power consumption of household appliances and determine the operating status of household appliances; Display module, used for users to view power consumption information and household appliances operating status information; A storage module, used for storing household appliance information and power consumption data; The transmission module is used for data transmission between various modules.

2. The smart electric meter according to claim 1, characterized in that: Household appliance information includes product type, rated power and production date; household appliance operating status includes normal operation, abnormal status, poor maintenance and equipment aging.

3. The smart electric meter according to claim 1, characterized in that: The information collection module includes a temperature sensor, a humidity sensor, an electricity meter module and an input module. The temperature sensor is used to detect the weather temperature, the humidity sensor is used to detect the air humidity, the electricity meter module is used to collect the electricity consumption information of household appliances, and the input module is used to obtain the information of household appliances.

4. The smart electric meter according to claim 3, characterized in that: The electricity meter module collects the electricity consumption information of household appliances, including the total electricity consumption of household appliances and the electricity consumption information of individual household appliances, including the following specific steps: S1: Turn on a household appliance first, and the power meter module collects the power consumption and current changes of the circuit from the time the household appliance is turned on to the time it works normally; S2: The power meter module collects the power consumption and current changes on the circuit during the normal operation of household appliances in S1; S3: Turn off the household appliances in S1, and the power meter module collects the power consumption and current changes on the line when the household appliances in S1 stop operating and completely shut down; S4: The power consumption and current changes collected in S1-S3 constitute the power consumption characteristics of the household appliances, and the power metering module transmits the power consumption characteristics of the household appliances to the storage module for storage; S5: The electricity meter module collects electricity consumption characteristics of other household appliances one by one, and repeats the above steps S1-S4; S6: Finally, all household appliances are turned on, and the power meter module collects the power consumption characteristics of the line when all household appliances are working at the same time and stores them in the storage module.

5. The smart electric meter according to claim 3, characterized in that: Operation steps of the input module: the user takes a picture of the nameplate of the household appliance and uploads the nameplate image to the input module. The input module collects the household appliance information through image recognition technology; or the user directly manually inputs the household appliance information through the input module.

6. The smart electric meter according to claim 1, characterized in that: Formula 1 for judging the operating status of household appliances: Where: k is the environmental impact coefficient; P1 is the actual power of household appliances; P 10 Rated power of household appliances; a is the annual increase percentage of household electrical appliances power; date is the current date; T is the production date of the household appliance.

7. The smart electric meter according to claim 6, characterized in that: Methods for controlling and judging the operating status of household appliances: S1: The electricity meter module detects a change in household electricity consumption and transmits the electricity consumption information to the data processing module through the transmission module; S2: The data processing module receives the power consumption information transmitted by the information collection module, calls the power consumption characteristics of household appliances in the matching storage module, and determines the specific household appliances and their actual power P1; S3: The data processing module retrieves the corresponding household appliance information in the storage module and obtains the rated power P 10 , product type, and production date T; S4: Determine the operating status of the household appliance according to formula 1.

8. The smart electric meter according to claim 6, characterized in that: When the temperature range is 0-30℃ and the humidity is below 85%, the k value is 1; When δ≤-0.2, the household appliances are in abnormal state and it is recommended to cut off the power immediately; When -0.2<δ≤-0.1, the household appliances are not well maintained and inspection and maintenance are recommended; When -0.1<δ≤0.1, household appliances operate normally; When 0.1<δ≤0.2, the household appliances are not well maintained and inspection and maintenance are recommended; When δ>0.2, the household appliance is in abnormal state and the power is cut off immediately; When P1 / P 10 When >1.5 and δ≤0.2, the household appliances are aging and it is recommended to replace them.

9. The smart electric meter according to claim 6, characterized in that: For air conditioners and refrigerators, when the temperature is above 35°C and the humidity is above 85%, the k value is 1.

2. When δ≤-0.3, the household appliances are in abnormal state and it is recommended to cut off the power immediately; When -0.3<δ≤-0.2, the household appliances are not well maintained and inspection and maintenance are recommended; When -0.2<δ≤0.2, household appliances operate normally; When 0.2<δ≤0.3, the household appliances are not well maintained and inspection and maintenance are recommended; When δ>0.3, the household appliance is in abnormal state and the power is cut off immediately.

10. The smart electric meter according to claim 1, characterized in that: The display module supports multiple display modes, including a combination of charts, text and icons, so that users can intuitively view power consumption information and household appliance operating status information.

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