Electric equipment running state monitoring system based on HLW8032 and dual-mode communication

Abstract

The utility model provides an electric equipment operation state monitoring system based on HLW8032 and dual-mode communication. The electric equipment operation state monitoring system comprises an acquisition device and a cloud service platform. The acquisition device is composed of a non-intrusive current acquisition module, a main control module, a relay module, a sound-light alarm module and a 4G and WIFI dual-mode communication module. The non-intrusive current acquisition module realizes high-precision current data acquisition through an HLW8032 chip, physical wiring modification of electric equipment is not needed, the installation process is simplified, and the cost is reduced. The main control module adopts an STM32 chip, instantaneous interference is eliminated through a dynamic window filtering algorithm, and the accuracy of monitoring data is improved. The dual-mode communication module supports signal strength detection and automatic switching, and ensures stable data transmission. The cloud service platform integrates a multi-device operation state visualization module, can receive, store and display monitoring data in real time, and sends alarm information in a short message, mail or APP message push mode, so that the system intelligence level and the user experience are improved.

Description

Technical Field

[0001] The utility model specifically relates to an electric equipment operation status monitoring system based on HLW8032 and dual-mode communication. Background Art

[0002] With the rapid development of my country's economy, electrical equipment has been widely used, and the monitoring and management of the operating status of electrical equipment is particularly important. In order to solve the problem of electrical equipment monitoring, corresponding solutions have also appeared in the market.

[0003] For example, the Chinese utility model patent document with publication number "CN206834835U" discloses a device and system for monitoring the status of electrical equipment. The system mainly includes a CPU main control module, an electric energy measurement module, an alarm module, a serial communication module, a clock module, a WIFI module, a storage module and a relay module connected thereto, as well as a voltage acquisition module and a current acquisition module whose input end is connected to a mains sampling point and whose output end is connected to the electric energy measurement module, and an air switch connected to the power circuit of the electrical equipment, and the relay module is connected to the air switch.

[0004] The above-mentioned electrical equipment status detection system has the following technical problems:

[0005] First of all, the system still needs to make certain electrical connections and installation operations with air switches, AC sampling points, etc. For some electrical equipment that has been put into operation and has relatively complex wiring, this installation method will bring certain construction difficulties and costs, affecting its widespread application in the transformation of existing equipment.

[0006] Secondly, the system has relatively low accuracy in current collection. For some application scenarios with tiny current changes or high requirements for collection accuracy, it cannot accurately capture and reflect the actual current conditions, thus affecting the precise monitoring and analysis of the operating status of electrical equipment.

[0007] Furthermore, the system mainly realizes wireless data transmission through WIFI module. However, in actual application, relying solely on a single WIFI communication method is prone to unstable communication, especially in complex electromagnetic environments or areas with weak network signals. It is easy to cause data transmission interruption or delay, affecting the timeliness and integrity of monitoring data, and is not conducive to remote real-time monitoring and management of electrical equipment. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide an electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication in view of the deficiencies of the above-mentioned prior art, adopt a non-intrusive current acquisition module and dual-mode communication technology to realize high-precision and high-reliability operation status monitoring of electrical equipment, greatly simplify the installation process, improve monitoring accuracy and communication stability, and at the same time improve the intelligence level of the system through centralized management and intelligent analysis of the cloud service platform.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric equipment operation status monitoring system based on HLW8032 and dual-mode communication, characterized in that: it includes a collection device and a cloud service platform, and the collection device is connected to the cloud service platform through the Internet; the collection device includes a non-intrusive current collection module, a main control module, a relay module, an audible and visual alarm module and a dual-mode communication module; the non-intrusive current collection module is used to collect the current signal of the electric equipment in real time, and is connected to the main control module through a USART interface; the main control module is used to process the collected current data and eliminate instantaneous interference through a dynamic window filtering algorithm; the relay module is used to cut off the circuit when the current exceeds the threshold to protect the electric equipment; the audible and visual alarm module is used to send an audible and visual alarm signal when a current abnormality is detected; the dual-mode communication module includes a 4G module and a WIFI module, and the 4G module and the WIFI module are respectively connected to the main control module through a USART interface, and are used to upload the collected data to the cloud service platform; the cloud service platform is used to receive, store and display monitoring data, and send alarm information to relevant personnel when an abnormal situation is detected.

[0010] By adopting the above technical solution, the non-intrusive current acquisition module realizes high-precision current data acquisition through the HLW8032 chip. There is no need to physically rewire the electrical equipment. Current acquisition can be completed by simply connecting the equipment to the socket with a preset sampling resistor, which greatly simplifies the installation process, reduces the construction difficulty and cost, and is particularly suitable for the transformation and upgrading of existing equipment. At the same time, the integrated acquisition device design integrates the metering, control, communication, and alarm functions into a single shell, reducing the workload of on-site installation and debugging, and further improving the convenience and reliability of installation. Furthermore, this system supports 0.5% precision current detection. The HLW8032 chip is equipped with a manganese copper sampling resistor and an RC filter network to ensure that the collected current signal is accurate and stable, and can accurately reflect the actual operating status of the electrical equipment. In addition, the main control module uses a dynamic window filtering algorithm to process the collected current data, effectively eliminating instantaneous interference, further improving the accuracy and reliability of the monitoring data, and overcoming the problem of low precision of existing monitoring devices. Furthermore, this system integrates 4G and WIFI dual-mode communication modules to support signal strength detection and automatic switching. When the WIFI signal is unstable, the system automatically switches to the 4G network to ensure the continuity and stability of data transmission, effectively solving the problem of poor communication reliability of traditional monitoring systems. At the same time, the cloud service platform integrates a multi-device operation status visualization module, which can receive, store, and display monitoring data in real time, and send alarm information to relevant personnel in a timely manner when abnormal conditions are detected. Through the centralized management and intelligent analysis of the cloud service platform, the intelligence level of the system and user experience are further improved.

[0011] The above-mentioned electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the non-intrusive current acquisition module includes an HLW8032 chip, and the HLW8032 chip is connected to an electrical equipment current acquisition and power supply circuit, a signal conditioning and filtering circuit, and a signal isolation and communication circuit.

[0012] Using the above technical solution, the current collection and power supply circuit of the electrical equipment collects the current of the electrical equipment through the sampling resistor, and transmits it to the corresponding pin of the HLW8032 chip to convert the analog signal into a digital signal. The signal conditioning and filtering circuit is used to adjust the signal characteristics and filter out unnecessary frequency components to ensure the stability of the circuit and signal quality. The signal isolation and communication circuit realizes signal isolation and communication, ensuring that the electric energy metering data is accurately transmitted to the main control chip through the main control module, and at the same time provides electrical isolation to enhance the reliability and safety of the system.

[0013] The above-mentioned electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the electrical equipment current acquisition and power supply circuit includes a sampling resistor, a power supply interface, and a power interface. The power supply interface is connected in series with the power interface through a sampling resistor. The VIP pin of the HLW8032 chip is grounded through a first resistor, a sampling resistor and a first capacitor connected in parallel. The VIN pin of the HLW8032 chip is connected to the live wire through a second resistor in series.

[0014] By adopting the above technical solution, the current acquisition and power supply circuit of the electrical equipment realizes accurate acquisition and stable power supply of the current of the electrical equipment through the reasonable configuration of the sampling resistor, the power supply interface, and the power interface. The sampling resistor enables the circuit to accurately convert the current signal into a voltage signal for subsequent processing without affecting the normal operation of the electrical equipment, providing a basis for realizing high-precision electric energy metering. In addition, the design of the first resistor and the sampling resistor and the first capacitor being grounded in parallel not only helps to filter out high-frequency noise and improve the stability of the signal, but also can effectively protect the chip from damage due to abnormal conditions such as overvoltage. The design of connecting the second resistor in series to the live wire further optimizes the input path of the signal, ensuring that the chip can accurately obtain the current signal, thereby improving the accuracy and reliability of current acquisition, and providing accurate data support for subsequent electric energy analysis and equipment monitoring.

[0015] The above-mentioned electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the signal conditioning and filtering circuit includes four groups of third resistors connected in series, the V2P pin of the HLW8032 chip is coupled to the neutral line through the four groups of third resistors connected in series, the V2P pin of the HLW8032 chip is grounded through the fourth resistor and the second capacitor connected in parallel, and the GND pin of the HLW8032 chip is grounded.

[0016] With the above technical solution, the signal conditioning and filtering circuit uses four sets of third resistors in series. Through this fine resistor configuration, the HLW8032 chip can achieve precise electrical connection with the neutral line, thereby effectively adjusting the transmission path and characteristics of the signal, ensuring the stability and integrity of the signal during transmission. At the same time, the fourth resistor and capacitor in parallel together form a filtering network, which can accurately filter out unnecessary frequency components, such as high-frequency noise. This filtering process is crucial to ensure the accuracy of subsequent signal processing, so that the main control module can perform data analysis and processing based on purer and more accurate signals. In addition, the design of GND pin grounding ensures the stability of the signal reference point of the entire circuit, avoids signal interference and measurement errors caused by ground potential fluctuations, further enhances the circuit's anti-interference ability and measurement accuracy, and ensures stable and accurate operation in a complex electromagnetic environment, providing a solid foundation for reliable monitoring of electrical equipment.

[0017] The above-mentioned electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the signal isolation and communication circuit includes an optocoupler chip, pin 2 of the optocoupler chip is connected to the CF pin of the HLW8032 chip, pin 1 of the input end of the optocoupler chip is coupled to the power supply through a fifth resistor in series, pin 3 of the input end of the optocoupler chip is grounded, pin 4 of the input end of the optocoupler chip is connected to the power supply through a sixth resistor in series and coupled to the signal end of the main control module, and the V2P pin of the HLW8032 chip is grounded through a seventh resistor in series.

[0018] By adopting the above technical solution, the signal isolation and communication circuit realizes the dual functions of signal isolation and communication by adopting the optocoupler chip, which greatly enhances the reliability and safety of the system. The optocoupler chip is connected to the CF pin of the HLW8032 chip to ensure that the electric energy metering data can be accurately transmitted from the HLW8032 chip to the optocoupler chip, thereby realizing the isolation conversion of the signal. The input end of the optocoupler chip is coupled to the power supply through the fifth resistor in series, which not only provides the necessary bias voltage for the circuit, but also can effectively limit the current and protect the optocoupler chip from overcurrent damage. The design of grounding the input end ensures the stability of the reference potential of the signal and reduces the interference during the signal transmission process. The input end is connected to the power supply through the sixth resistor in series and coupled to the signal end of the main control module. This configuration enables the isolated signal to be accurately transmitted to the main control module, realizing reliable communication between the front and rear circuits. In addition, the HLW8032 chip is grounded through the seventh resistor in series, which further optimizes the loop path of the signal, enhances the anti-interference ability of the circuit, and ensures that the electric energy metering data can be stably and accurately transmitted to the main control module in a complex industrial environment.

[0019] The above-mentioned power equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the main control module adopts STM32 chip, and dynamically adjusts the alarm threshold by analyzing the mean and standard deviation of historical data.

[0020] With the above technical solution, the STM32 chip has powerful processing capabilities and can quickly and accurately analyze the mean and standard deviation of historical data, thereby more accurately reflecting the normal operating status of power-consuming equipment. Compared with fixed thresholds, this method of dynamically adjusting the alarm threshold can more sensitively capture subtle changes in the operating status of the equipment (such as the gradual aging of the equipment, the dynamically adjusted alarm threshold can promptly reflect this change, avoiding omissions or false alarms caused by unchanged thresholds), promptly discover potential abnormalities, and effectively improve the accuracy of the monitoring system.

[0021] The above-mentioned electrical equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the sound and light alarm module includes a buzzer and an LED indicator light, which are controlled by the IO pins of the main control module.

[0022] With the above technical solution, the buzzer can sound an alarm and the LED indicator can light an alarm. The combination of the two ensures that abnormal status of electrical equipment can be detected in time under different environmental conditions. For example, in a noisy environment, the light alarm can effectively supplement the deficiency of the sound alarm; while in a quiet environment, the sound alarm can quickly attract attention.

[0023] The above-mentioned power equipment operation status monitoring system based on HLW8032 and dual-mode communication can be further configured as follows: the cloud service platform sends alarm information via SMS, email or APP message push.

[0024] By adopting the above technical solution, the cloud service platform can monitor the operating status of electrical equipment in real time. Once an abnormal situation is detected, the alarm information will be immediately sent to relevant personnel via SMS, email or APP message push, ensuring that they can receive the alarm notification as soon as possible and take timely measures to avoid further expansion of equipment failure or safety accidents.

[0025] The beneficial effects of the utility model are as follows: (1) The metering, control, communication and alarm functions are integrated into a single housing. (2) The HLW8032 non-invasive metering chip is used to realize high-precision current data acquisition, without the need for physical wiring of electrical equipment, thus avoiding the defects of complex installation of traditional monitoring devices. (3) The main controller adopts a dynamic threshold algorithm to eliminate instantaneous interference, ensure the accuracy of monitoring data, and overcome the problem of low accuracy of existing monitoring devices. (4) The integrated 4G and WIFI dual-mode communication units improve the reliability of data transmission and solve the defect of poor communication reliability of traditional monitoring systems. (5) The cloud service platform integrates a multi-device operation status visualization module to realize centralized monitoring and management of multiple electrical equipment, thus improving the intelligence level of the monitoring system.

[0026] The utility model is further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall system architecture of an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of a dynamic window filtering algorithm flow chart of an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of a dual-mode communication switching process according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the HLW8032 circuit principle diagram of an embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of a current collection and power supply circuit for electrical equipment according to an embodiment of the utility model;

[0032] Figure 6 A schematic diagram of a signal conditioning and filtering circuit according to an embodiment of the utility model;

[0033] Figure 7 Schematic diagram of signal isolation and communication circuit according to an embodiment of the present utility model.

[0034] Reference numerals: sampling resistor 1, first resistor 2, first capacitor 3, third resistor 4, fourth resistor 5, second capacitor 6, HLW8032 chip 7, optocoupler chip 8, sixth resistor 9, seventh resistor 10, second resistor 11, fifth resistor 12. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The power equipment operation status monitoring system based on HLW8032 and dual-mode communication includes a collection device and a cloud service platform, and the collection device and the cloud service platform are connected through the Internet.

[0037] The acquisition device includes a non-intrusive current acquisition module, a main control module, a relay module, an audible and visual alarm module and a dual-mode communication module.

[0038] like Figure 4 As shown, the non-intrusive current acquisition module includes the HLW8032 chip 7, which is connected to the current acquisition and power supply circuit of the electric device, the signal conditioning and filtering circuit, and the signal isolation and communication circuit. The non-intrusive current acquisition module is used to collect the current signal of the electric device in real time and is connected to the main control module through the USART interface.

[0039] like Figure 5As shown, the current collection and power supply circuit of the electric equipment includes a sampling resistor 1, a power supply interface, and a power interface. The power supply interface is connected in series with the power interface through the sampling resistor 1. The VIP pin of the HLW8032 chip 7 is grounded through the first resistor 2, the sampling resistor 1 and the first capacitor 3 connected in parallel. The VIN pin of the HLW8032 chip 7 is connected to the live wire through the second resistor 11 connected in series. The parameters of the resistor used are 2mΩ / 25A.

[0040] like Figure 6 As shown, the signal conditioning and filtering circuit includes four groups of third resistors 4 connected in series, the V2P pin of the HLW8032 chip 7 is coupled to the neutral line through the four groups of third resistors 4 connected in series, the V2P pin of the HLW8032 chip 7 is grounded through the fourth resistor 5 and the second capacitor 6 connected in parallel, and the GND pin of the HLW8032 chip 7 is grounded.

[0041] like Figure 7 As shown, the signal isolation and communication circuit includes an optocoupler chip 8, pin 2 of the optocoupler chip 8 is connected to the CF pin of the HLW8032 chip 7, pin 1 of the input terminal of the optocoupler chip 8 is coupled to the power supply through a fifth resistor 12 in series, pin 3 of the input terminal of the optocoupler chip 8 is grounded, pin 4 of the input terminal of the optocoupler chip 8 is connected to the power supply through a sixth resistor 9 in series and coupled to the signal end of the main control module, and pin V2P of the HLW8032 chip 7 is grounded through a seventh resistor 10 in series.

[0042] The main control module uses the STM32 chip to process the collected current data, dynamically adjusts the alarm threshold by analyzing the mean and standard deviation of historical data, and eliminates instantaneous interference through a dynamic window filtering algorithm.

[0043] The relay module is used to cut off the circuit when the current exceeds the threshold value to protect the electrical equipment.

[0044] The sound and light alarm module includes a buzzer and an LED indicator light, which are controlled by the IO pins of the main control module and are used to send out sound and light alarm signals when current abnormality is detected.

[0045] The dual-mode communication module includes a 4G module and a WIFI module. The 4G module and the WIFI module are connected to the main control module through the USART interface respectively, and are used to upload the collected data to the cloud service platform.

[0046] The cloud service platform is used to receive, store and display monitoring data, and send alarm information to relevant personnel via SMS, email or APP message push when an abnormal situation is detected.

[0047] The specific operation of this embodiment is explained as follows: Among them, the HLW8032 chip 7 adopts a low-intrusive design, and realizes current collection by embedding a high-precision sampling resistor 1 (2mΩ / 25A) in the live wire. Its hardware design is as follows: Figure 2 As shown. This solution does not require users to physically modify the wiring of electrical equipment. It only requires connecting the equipment to a socket with a preset sampling resistor 1 to complete the equipment current collection. This avoids the complex operations of cutting the wires and connecting transformers or shunts in series in the traditional solution, greatly simplifying the installation process. The main control module uses a dynamic sliding window filtering algorithm to process the collected current data, eliminate instantaneous interference, ensure the accuracy of the monitoring data, and overcome the problem of low accuracy of existing monitoring devices.

[0048] The main control module obtains the device current value through the non-invasive current acquisition module, dynamically adjusts the alarm threshold by analyzing the mean and standard deviation of historical data, and compares the current current with the threshold in real time to trigger the sound and light alarm. The dynamic threshold flow chart is as follows: Figure 3 As shown, when the current exceeds the threshold value for 10s, the relay module will cut off the circuit to protect the electrical equipment, and transmit the abnormal current data to the cloud service platform through the dual-mode communication module of "4G and WIFI". The switching flow chart of the dual-mode communication module is shown in Figure 4 shown.

[0049] When an abnormal current is detected in the electrical equipment, the buzzer in the sound and light alarm module will sound an alarm, and the LED indicator will turn red, realizing the on-site sound and light alarm function.

[0050] The collection device function collects the real-time current value of the electrical equipment through a non-invasive current collection module, and uploads the current data to the cloud service platform.

[0051] After receiving the data uploaded by the collection device, the cloud service platform stores it in the MongoDB database. The cloud service platform is developed using the lightweight enterprise integration framework Struts+Hibernate+Spring+DWR+JQuary, using JAVA's object-oriented design pattern, and displays the operating status of electrical equipment in real time in Web applications and mobile apps. If an abnormal situation is detected, the cloud service platform will send an alarm message to relevant personnel for timely processing.

Claims

1. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication is characterized by: It includes a collection device and a cloud service platform, wherein the collection device and the cloud service platform are connected via the Internet; The acquisition device includes a non-intrusive current acquisition module, a main control module, a relay module, an audible and visual alarm module and a dual-mode communication module; The non-intrusive current acquisition module is used to collect the current signal of the electrical equipment in real time and is connected to the main control module through the USART interface; The main control module is used to process the collected current data and eliminate instantaneous interference through a dynamic window filtering algorithm; The relay module is used to cut off the circuit when the current exceeds the threshold value to protect the electrical equipment; The sound and light alarm module is used to send out sound and light alarm signals when abnormal current is detected; The dual-mode communication module includes a 4G module and a WIFI module, and the 4G module and the WIFI module are respectively connected to the main control module through a USART interface, and are used to upload the collected data to the cloud service platform; The cloud service platform is used to receive, store and display monitoring data, and send alarm information to relevant personnel when an abnormal situation is detected.

2. According to claim 1, the power equipment operation status monitoring system based on HLW8032 and dual-mode communication is characterized in that: The non-intrusive current acquisition module includes an HLW8032 chip, and the HLW8032 chip is connected to a useful electric device current acquisition and power supply circuit, a signal conditioning and filtering circuit, and a signal isolation and communication circuit.

3. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to claim 2 is characterized in that: The current collection and power supply circuit of the electrical equipment includes a sampling resistor, a power supply interface, and a power consumption interface. The power supply interface is connected in series with the power consumption interface through the sampling resistor. The VIP pin of the HLW8032 chip is grounded through a first resistor, a sampling resistor and a first capacitor connected in parallel. The VIN pin of the HLW8032 chip is connected to the live wire through a second resistor in series.

4. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to claim 2 is characterized in that: The signal conditioning and filtering circuit includes four sets of third resistors connected in series, the V2P pin of the HLW8032 chip is coupled to the neutral line through the four sets of third resistors connected in series, the V2P pin of the HLW8032 chip is grounded through the fourth resistor and the second capacitor connected in parallel, and the GND pin of the HLW8032 chip is grounded.

5. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to claim 2 is characterized in that: The signal isolation and communication circuit includes an optocoupler chip, pin 2 of the optocoupler chip is connected to the CF pin of the HLW8032 chip, pin 1 of the input end of the optocoupler chip is coupled to the power supply through a fifth resistor in series, pin 3 of the input end of the optocoupler chip is grounded, pin 4 of the input end of the optocoupler chip is connected to the power supply and coupled to the signal end of the main control module through a sixth resistor in series, and pin V2P of the HLW8032 chip is grounded through a seventh resistor in series.

6. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to any one of claims 1 to 5, characterized in that: The main control module adopts the STM32 chip and dynamically adjusts the alarm threshold by analyzing the mean and standard deviation of historical data.

7. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to claim 6 is characterized in that: The sound and light alarm module includes a buzzer and an LED indicator light, which are controlled by the IO pins of the main control module.

8. The power equipment operation status monitoring system based on HLW8032 and dual-mode communication according to any one of claims 1 to 5, characterized in that: The cloud service platform sends the alarm information via SMS, email or APP message push.

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