Intelligent anti-electric shock low-voltage electric energy meter device

Abstract

The invention belongs to the technical field of electric energy meters, and relates to an intelligent anti-electric shock low-voltage electric energy meter device, which comprises an electric energy meter function module used for measuring and displaying line electrical parameter data in real time; diagnosing a line fault according to the electrical parameter data; the anti-electric shock function module is used for providing a line protection mode when the line breaks down; the gateway function module is used for accessing a cloud platform and realizing synchronous display of the equipment state at the equipment end, the webpage end and the mobile phone end; and the power supply protection module is used for discharging and limiting the influence of direct lightning and inductive lightning and surge under other instantaneous overvoltage conditions, and protecting the safety of the circuit and equipment under the lightning stroke or overvoltage condition. The intelligent electric energy meter has the beneficial effects that the intelligent electric energy meter integrates the functions of personal electric shock protection, data acquisition, electric leakage detection, logic control, automatic opening, state display, remote communication and the like, can replace the combined functions of a traditional electric energy meter, an electric leakage protector, an overvoltage and undervoltage protector, an energy consumption analysis device and a gateway, and realizes high integration of equipment.

Description

Technical Field

[0001] This invention relates to the field of electricity meter technology, and in particular to an intelligent anti-electric shock low-voltage electricity meter device. Background Technology

[0002] Currently, widely installed household electricity meters only collect voltage and current data and calculate electrical energy as the basis for electricity billing by management departments. They lack functions such as personal safety protection, full-data collection of electricity consumption, line grounding, leakage alarm, line temperature measurement, remote interconnection of electricity consumption data, real-time monitoring of line conditions, and remote control of circuit breaker opening and closing.

[0003] Household electricity meters are low-voltage terminal devices used in residential homes, offices, industrial, commercial, civil buildings, and infrastructure. In traditional technology, electricity meters can only measure the amount of electricity and use it as the basis for billing. They cannot provide overload and leakage protection or electric shock detection, which is insufficient to fully protect personal and property safety. They also cannot realize functions such as electricity data collection, information transmission, status monitoring, and remote control. Summary of the Invention

[0004] Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an intelligent anti-electric shock low-voltage energy meter device, which solves the technical problems of existing energy meters having single functions and being unable to realize the integration of personal electric shock protection, remote monitoring and fault diagnosis.

[0005] Technical solution To achieve the above objectives, the main technical solutions adopted by the present invention include: This invention provides an intelligent anti-electric shock low-voltage energy meter device, including an intelligent anti-electric shock low-voltage energy meter device and a cloud platform; The intelligent anti-electric shock low-voltage energy meter device includes: an energy meter function module, an anti-electric shock function module, a gateway function module, and a power supply protection module; The energy meter module is used to measure and display line electrical parameters in real time; and to diagnose line faults based on the electrical parameters. The electric shock protection module is used to provide line protection modes when a line fault occurs, including both mechanical and electronic protection modes. The gateway module is used to access the cloud platform and enable the device status to be displayed synchronously on the device, web page, and mobile phone. The power supply protection module is used to discharge and limit power surges caused by direct lightning strikes, induced lightning strikes, and other instantaneous overvoltage conditions, protecting the safety of circuits and equipment under lightning strikes or overvoltage conditions.

[0006] Optionally, the cloud platform is used to monitor the operating status of equipment in real time, update energy consumption statistical analysis data, and provide a human-machine interface. Through this interface, users can formulate energy-saving plans according to their needs, adjust leakage current setting values ​​and temperature setting values, and send the set configuration information, control commands and related setting values ​​to the core processing unit of the energy meter functional module for execution; and receive equipment information, real-time electrical parameters, real-time energy, temperature and alarm status data reported by the wireless communication unit of the gateway functional module.

[0007] Optionally, the energy meter functional module includes: a data acquisition unit, a core processing unit, and a display unit; The data acquisition unit is used to measure electrical parameters in real time and send the electrical parameters to the core processing unit after signal processing and measurement; it includes a power detection unit, a leakage current detection unit, and a temperature detection unit. The core processing unit is connected to the wireless communication unit circuits in the data acquisition unit, display unit, and gateway functional module, respectively. It is used to make logical judgments when electrical parameter data is abnormal, and to control according to the corresponding protection logic to realize the protection function. It can adjust the set values ​​of each electrical parameter, transmit the power consumption information to the cloud platform through the wireless communication unit, and receive the configuration information and opening and closing control commands sent by the cloud platform. The display unit is used to display electrical parameter data in real time and provide a human-machine interface; it includes an LCD screen and buttons.

[0008] Optionally, the core processing unit includes a control unit and an execution unit; The control unit is used to receive electrical parameters from the data acquisition unit, perform logical judgments, and output control signals. The execution unit is used to receive control signals and perform opening and closing operations.

[0009] Optionally, the anti-electric shock function module includes an electronic protection unit and a mechanical protection unit; The electronic protection unit is used to receive the opening and closing commands from the core processing unit and provide electronic protection modes, including three opening and closing modes: local manual control mode, remote command control mode, and fault mode. The mechanical protection unit is used to provide a mechanical protection mode to ensure line safety when the electronic protection mode partially fails.

[0010] Optionally, the mechanical protection mode specifically includes: The electrical parameters of the current line current are obtained through the data acquisition unit; Detect current anomalies based on electrical parameter data; When an electric shock fault occurs in the line, the current flows through the current trip coil, and the electromagnetic attraction generated by its iron core coil will attract the armature. When the armature is attracted, it hits the lever, the hook pushes up to release the mechanical interlock, and the contacts are broken. When the circuit is overloaded, the overload current flows through the heating resistance wire, which heats up the bimetallic strip, causing the bimetallic strip to bend and push the lever, which in turn opens the hook, releases the mechanical interlock, and disconnects the contacts. The moving contact and the stationary contact separate rapidly under the action of the spring, thereby cutting off the faulty circuit and realizing the protection function; After troubleshooting the circuit fault, reset the lever and hook.

[0011] Optionally, the gateway functional module includes a wireless communication unit and a wired communication unit; The wireless communication unit is used to connect to the main control chip. The main control chip sends control commands to the wireless communication unit through the serial port to make it work in transparent transmission mode. It adopts the Internet of Things transmission protocol to access the cloud platform. Through the wireless unit, device information, real-time electrical parameter data, real-time power consumption, temperature, and alarm status information are reported to the cloud platform. The wired communication unit is used to provide wired communication.

[0012] Optionally, the gateway function module is also used to receive configuration information, control commands, leakage current setting values, and temperature setting values ​​sent by the cloud platform.

[0013] Optionally, the functional module includes a composite surge protection unit for protecting the circuit and equipment during lightning strikes and overvoltages.

[0014] Optionally, the composite surge protection unit circuit includes a ceramic gas discharge tube, a varistor, and a thermal fuse.

[0015] Beneficial effects The beneficial effects of this invention are: 1. This device integrates functions such as personal electric shock protection, data acquisition, leakage current detection, logic control, automatic tripping, status display, and remote communication. It can replace the combined functions of traditional electricity meters, leakage current protectors, over / under voltage protectors, energy consumption analysis devices, and gateways, achieving a high degree of equipment integration. Electrical parameters are acquired through real line values, and a high-precision metering chip is used internally to ensure the accuracy of measurement data, providing a reliable basis for subsequent analysis. The protection mode is divided into mechanical protection and electronic protection. The mechanical protection mode complies with national standards, and can still ensure the safe and reliable operation of the line when the electronic protection mode fails. 2. Supports simultaneous display of device status on the device, web page, and mobile phone, allowing users to monitor device operation anytime, anywhere, and update energy consumption statistics and analysis data in real time, facilitating users to quickly develop energy-saving solutions; at the same time, users can view various power parameters, real-time leakage current data and temperature data, and flexibly adjust protection parameters such as leakage current setting value and temperature setting value. Attached Figure Description

[0016] Figure 1 A modular structure diagram of an intelligent anti-electric shock low-voltage energy meter device provided in an embodiment of the present invention. Figure 2 This is a structural block diagram of an intelligent anti-electric shock low-voltage energy meter device provided in an embodiment of the present invention; Figure 3 This is a flowchart illustrating the mechanical protection mode against electric shock in an embodiment of the present invention. Figure 4 This is a circuit diagram of the composite surge protection module in an embodiment of the present invention. Detailed Implementation

[0017] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0018] like Figure 1 and Figure 2 As shown, the present invention provides an intelligent anti-electric shock low-voltage energy meter device, including an intelligent anti-electric shock low-voltage energy meter device and a cloud platform; The intelligent anti-electric shock low-voltage energy meter device includes: an energy meter function module, an anti-electric shock function module, a gateway function module, a power supply protection module, and a cloud platform.

[0019] The energy meter functional module is used to measure and display line electrical parameters in real time; diagnose line faults based on the electrical parameters; the energy meter functional module has high data measurement accuracy and timely and effective fault diagnosis; The energy meter functional modules include: a data acquisition unit, a core processing unit, and a display unit.

[0020] The data acquisition unit is used to measure electrical parameters in real time. It includes a power detection unit, a leakage current detection unit, and a temperature detection unit. It can accurately measure data such as voltage, current, power, leakage current, and temperature in the line, and send them to the core processing unit after signal processing and measurement.

[0021] Specifically, the power detection unit accurately measures parameters such as current, voltage, power factor, phase angle, and frequency of each phase using a domestically produced metering chip. It can also measure the active power, reactive power, apparent power, and reactive energy of each phase and the combined phase. Leakage current data is acquired through a leakage current unit, and temperature data is detected through a temperature detection unit (i.e., a temperature sensor). After signal processing and measurement, the electrical parameters and temperature data are sent to the core processing unit. The temperature detection circuit uses a temperature sensor to collect temperature data.

[0022] The core processing unit, acting as the core processor, is connected to the wireless communication unit circuits in the data acquisition unit, display unit, and gateway functional module. When faults such as overvoltage, undervoltage, phase loss, power quality issues, power outages, leakage current, overcurrent, and overtemperature occur in the line, it performs logical judgments and controls the execution unit according to the corresponding protection logic to achieve over / undervoltage, leakage current, and overtemperature protection functions. Furthermore, it can adjust the set values ​​of various electrical parameters, transmit power consumption information to the cloud platform via the wireless communication unit, and receive configuration information and circuit breaker control commands sent by the cloud platform.

[0023] The core processing unit includes a control unit and an execution unit; The control unit is used to receive electrical parameters from the data acquisition unit, perform logical judgments, and output control signals. The execution unit is used to receive control signals and perform opening and closing operations.

[0024] The display unit is used to display electrical parameter data in real time. It includes an LCD screen and buttons, and can realize functions such as real-time data query and parameter setting. The human-machine interface is user-friendly and convenient.

[0025] The electric shock protection module is used to provide line protection modes when an electric shock fault occurs in the line, including both mechanical and electronic protection modes, which are safer and more reliable. It includes electronic protection units and mechanical protection units.

[0026] The electronic protection unit receives opening and closing control commands from the core processing unit and provides three electronic protection modes: local manual control, remote command control, and fault mode. This unit is equipped with a remote command control switch to enable or disable the electronic protection mode; in addition, it can save the most recent 12 opening event records for querying, supports configuration of whether a fault triggers opening processing, and can set protection parameter thresholds according to the actual working environment. Furthermore, through remote time synchronization and timed opening and closing configuration, the equipment can automatically execute opening and closing operations according to preset logic.

[0027] The mechanical protection unit is used to provide a mechanical protection mode to ensure line safety when the electronic protection mode partially fails.

[0028] like Figure 3 As shown, the mechanical protection mode ensures the safe and reliable operation of the line even when the electronic protection mode partially fails. The mechanical protection mode specifically includes: The electrical parameters of the current line current are obtained through the data acquisition unit; Detect current anomalies based on electrical parameter data; When an electric shock fault occurs in the line, the current flows through the current trip coil, and the electromagnetic attraction generated by its iron core coil will attract the armature. When the armature is attracted, it hits the lever, the hook pushes up to release the mechanical interlock, and the contacts are broken. When an overload occurs in the circuit, the overload current flows through the heating resistance wire, which heats up the bimetallic strip, causing the strip to bend and push against the lever. This also releases the mechanical interlock by pushing open the latch, disconnecting the contacts. At this time, the moving contact and the stationary contact quickly separate under the action of the spring, thereby cutting off the faulty circuit and realizing the protection function; After troubleshooting the circuit fault, reset the lever and hook.

[0029] The gateway module is used to access the cloud platform and enable simultaneous display of device status on the device, web page, and mobile phone terminals; it includes a wired communication unit and a wireless communication unit.

[0030] The gateway module uses a SIMCOM-A7630 4G CAT1 wireless communication unit. This wireless communication unit is connected to the main control chip, which sends AT control commands to the wireless communication unit via a UART serial port, enabling it to operate in transparent transmission mode. It uses the MQTT IoT transmission protocol to access the cloud platform. Through the wireless unit, device information, real-time electrical parameters, real-time power consumption, temperature, alarm status, and other information can be reported to the platform, enabling simultaneous display of device status on the device itself, a web browser, and a mobile device.

[0031] The gateway module is also used to receive configuration information, control commands, leakage current setting values, and temperature setting values ​​sent by the cloud platform. The power supply protection module is used to discharge and limit surges caused by direct lightning strikes, induced lightning strikes, and other transient overvoltage conditions, protecting circuits and equipment from lightning strikes or overvoltage. It includes a composite surge protection unit for protecting circuits and equipment from lightning strikes and overvoltage.

[0032] like Figure 4As shown, the composite surge protection unit is specifically a composite surge protector. Its circuit includes a ceramic gas discharge tube DS1, a varistor MOV1, a thermal fuse F1, terminals J1 and J2, as well as a live wire L and a neutral wire N. Each component plays a different role, complements each other, and together constitutes a safe and reliable overvoltage protection system.

[0033] Specifically, when the line voltage is normal, the varistor is in a high-resistance state, and the ceramic gas discharge tube is also in a cut-off state. At this time, the entire protection branch is in a high-resistance state to ground, which is equivalent to an open circuit and does not affect the normal operation of the main circuit.

[0034] When small to medium-sized surges occur on the line, the varistor, with its rapid response, is the first to act, clamping and absorbing energy. It quickly transitions from a high-resistance state to a low-resistance state, clamping the surge voltage within a safe level and absorbing some of the energy. During this stage, the voltage is effectively suppressed, the surge energy is relatively small, and the voltage rise rate is insufficient to immediately break down the ceramic gas discharge tube, or the voltage peak has not yet reached the DC breakdown voltage of the ceramic gas discharge tube.

[0035] When encountering a high-energy lightning surge, the voltage rises sharply and instantaneously. The varistor, with its extremely fast response, immediately clamps the voltage spike. Due to the immense energy, the voltage applied across the ceramic gas discharge tube quickly exceeds its breakdown voltage, causing the tube to break down and enter the arc discharge region, forming an extremely low-impedance path. At this point, most of the surge current is discharged through this low-impedance path, reducing the discharge pressure on the varistor and preventing it from bursting or rapidly deteriorating due to excessive energy absorption. After the surge subsides, the arc in the ceramic gas discharge tube extinguishes, automatically returning to a high-impedance state, and the circuit resumes normal operation.

[0036] During long-term use, varistors may deteriorate due to repeated surge impacts or natural aging. Deteriorated varistors will generate significant leakage current even under normal voltage, causing their body temperature to rise abnormally. Because the thermal fuse is located close to the varistor, it will blow when the varistor's surface temperature reaches the fuse's melting point (e.g., 130°C). After the fuse blows, the entire protection circuit is disconnected from the circuit. While the device loses surge protection, it avoids a short circuit and fire caused by thermal breakdown of the varistor. Simultaneously, because the protection circuit is disconnected, the main circuit of the device can still operate normally (just without protection). This design prompts the user to replace the protection module or perform maintenance.

[0037] Through the hierarchical collaborative working mechanism of the above-mentioned composite surge protector, a combination of rapid response and large current carrying capacity is achieved, and it also has the ultimate safety failure protection function, making it a highly reliable surge protection solution.

[0038] The cloud platform is used to monitor the operating status of equipment in real time, update energy consumption statistical analysis data, and provide a human-machine interface. Through this interface, users can formulate energy-saving plans according to their needs, adjust leakage current setting values ​​and temperature setting values, and send the set configuration information, control commands and related setting values ​​to the core processing unit of the energy meter functional module for execution. It also receives equipment information, real-time electrical parameters, real-time energy, temperature and alarm status data reported by the wireless communication unit of the gateway functional module.

[0039] This embodiment provides an intelligent low-voltage electricity meter device that integrates data acquisition, logic control, automatic tripping, and remote communication functions. Based on the traditional electricity meter, it features a completely redesigned design that can replace the original billing electricity meter. Utilizing IoT technology, it intelligently manages key electrical factors of household power distribution equipment, including data acquisition, equipment status monitoring, and early warning alarms. It enables remote control of circuit breaker opening and closing, making it safer and more reliable. When a circuit fault occurs, it protects users and electrical appliances, preventing damage to equipment and electric shock. Connecting to the IoT via a 4G CAT1 wireless communication module, it transmits measurement data to a cloud platform for real-time data monitoring, fault diagnosis, and early warning alarms. It can also receive parameter configurations and remote control commands from the cloud platform. In case of abnormal conditions such as undervoltage, overvoltage, overload, leakage, or overtemperature, the system automatically issues warnings and ensures normal load operation, allowing for timely, effective, and comprehensive monitoring of electricity usage and maximizing the prevention of electrical fires and personal injury.

[0040] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, then this invention should also include these modifications and variations.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A smart anti-electric shock low-voltage energy meter device, characterized in that, This includes intelligent anti-electric shock low-voltage energy meter devices and cloud platforms; The intelligent anti-electric shock low-voltage energy meter device includes: an energy meter function module, an anti-electric shock function module, a gateway function module, and a power supply protection module; The energy meter module is used to measure and display line electrical parameters in real time; and to diagnose line faults based on the electrical parameters. The electric shock protection module is used to provide line protection modes when a line fault occurs, including both mechanical and electronic protection modes. The gateway module is used to access the cloud platform and enable the device status to be displayed synchronously on the device, web page, and mobile phone. The power supply protection module is used to discharge and limit power surges caused by direct lightning strikes, induced lightning strikes, and other instantaneous overvoltage conditions, protecting the safety of circuits and equipment under lightning strikes or overvoltage conditions.

2. The intelligent anti-electric shock low-voltage energy meter device according to claim 1, characterized in that, It also includes cloud platforms; The cloud platform is used to monitor the operating status of equipment in real time, update energy consumption statistical analysis data, and provide a human-machine interface. Through this interface, users can formulate energy-saving plans according to their needs, adjust leakage current setting values ​​and temperature setting values, and send the set configuration information, control commands and related setting values ​​to the core processing unit of the energy meter function module for execution. The device information, real-time electrical parameters, real-time power consumption, temperature, and alarm status data reported by the wireless communication unit of the receiving gateway module are received.

3. The intelligent anti-electric shock low-voltage energy meter device according to claim 2, characterized in that, The energy meter functional modules include: a data acquisition unit, a core processing unit, and a display unit; The data acquisition unit is used to measure electrical parameters in real time and send the electrical parameters to the core processing unit after signal processing and measurement; it includes a power detection unit, a leakage current detection unit, and a temperature detection unit. The core processing unit is connected to the wireless communication unit circuits in the data acquisition unit, display unit, and gateway functional module, respectively. It is used to make logical judgments when electrical parameter data is abnormal, and to control according to the corresponding protection logic to realize the protection function. It can adjust the set values ​​of each electrical parameter, transmit the power consumption information to the cloud platform through the wireless communication unit, and receive the configuration information and opening and closing control commands sent by the cloud platform. The display unit is used to display electrical parameter data in real time and provide a human-machine interface; it includes an LCD screen and buttons.

4. The intelligent anti-electric shock low-voltage energy meter device according to claim 3, characterized in that, The core processing unit includes a control unit and an execution unit; The control unit is used to receive electrical parameters from the data acquisition unit, perform logical judgments, and output control signals. The execution unit is used to receive control signals and perform opening and closing operations.

5. The intelligent anti-electric shock low-voltage energy meter device according to claim 4, characterized in that, The electric shock protection module includes an electronic protection unit and a mechanical protection unit; The electronic protection unit is used to receive the opening and closing commands from the core processing unit and provide electronic protection modes, including three opening and closing modes: local manual control mode, remote command control mode, and fault mode. The mechanical protection unit is used to provide a mechanical protection mode to ensure line safety when the electronic protection mode partially fails.

6. The intelligent anti-electric shock low-voltage energy meter device according to claim 5, characterized in that, The mechanical protection mode specifically includes: The electrical parameters of the current line current are obtained through the data acquisition unit; Detect current anomalies based on electrical parameter data; When an electric shock fault occurs in the line, the current flows through the current trip coil, and the electromagnetic attraction generated by its iron core coil will attract the armature. When the armature is attracted, it hits the lever, the hook pushes up to release the mechanical interlock, and the contacts are broken. When the circuit is overloaded, the overload current flows through the heating resistance wire, which heats up the bimetallic strip, causing the bimetallic strip to bend and push the lever, which in turn opens the hook, releases the mechanical interlock, and disconnects the contacts. The moving contact and the stationary contact separate rapidly under the action of the spring, thereby cutting off the faulty circuit and realizing the protection function; After troubleshooting the circuit fault, reset the lever and hook.

7. The intelligent anti-electric shock low-voltage energy meter device according to claim 6, characterized in that, The gateway functional module includes a wireless communication unit and a wired communication unit; The wireless communication unit is used to connect to the main control chip. The main control chip sends control commands to the wireless communication unit through the serial port to make it work in transparent transmission mode. It adopts the Internet of Things transmission protocol to access the cloud platform. Through the wireless unit, device information, real-time electrical parameter data, real-time power consumption, temperature, and alarm status information are reported to the cloud platform. The wired communication unit is used to provide wired communication.

8. The intelligent anti-electric shock low-voltage energy meter device according to claim 7, characterized in that, The gateway module is also used to receive configuration information, control commands, leakage current setting values, and temperature setting values ​​sent by the cloud platform.

9. The intelligent anti-electric shock low-voltage energy meter device according to claim 8, characterized in that, The power supply protection module includes a composite surge protection unit to protect the safety of circuits and equipment during lightning strikes and overvoltages.

10. The intelligent anti-electric shock low-voltage energy meter device according to claim 9, characterized in that, The composite surge protection unit circuit includes a ceramic gas discharge tube, a varistor, and a thermal fuse.

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