Power line carrier intelligent control power supply with electric leakage positioning function

Abstract

The invention discloses a power line carrier intelligent control power supply with electric leakage positioning, and a main control module in the power line carrier intelligent control power supply can obtain electric leakage information generated by an electric leakage detection module, and determines corresponding electric leakage type information and electric leakage positioning related information according to the electric leakage information, so as to efficiently and automatically analyze an electric leakage event. And a report message generated by the electric leakage information and / or the electric leakage data can be uploaded to a control center in a power line carrier manner, so that further electric leakage event analysis is facilitated, and the accuracy and efficiency of electric leakage positioning are improved.

Description

Technical Field

[0001] This application relates to the field of intelligent lighting technology, and in particular to a power line carrier intelligent control power supply with leakage current positioning. Background Technology

[0002] In general lighting systems, leakage current is a common and dangerous safety hazard, so leakage current detection mechanisms are usually required. This is typically achieved by using a residual current device (RCD) in the main distribution box.

[0003] However, residual current devices (RCDs) are typically used to provide power outage protection for the entire circuit, making it difficult to pinpoint the specific fault location, which can cause inconvenience for troubleshooting and maintenance. Summary of the Invention

[0004] To address the aforementioned technical problems, this application proposes a power line carrier intelligent control power supply with leakage current location, which can improve the accuracy and efficiency of leakage current location.

[0005] This application provides a power line carrier intelligent control power supply with leakage current location, including: The driver power supply module is electrically connected to the light source; A communication module, electrically connected to a power line, is used to communicate with the control center via the power line using power line carrier communication. The leakage current detection module is used to generate leakage current information corresponding to the leakage current when leakage current of the light source and / or the power line carrier intelligent control power supply is detected; and The main control module is used to receive control signals from the control center via the communication module, and control the drive power module to output drive signals to the light source according to the control signals. The main control module is also configured to: Receive the leakage current information; Based on the leakage information, the corresponding leakage data is determined, wherein the leakage data includes leakage type information and leakage location information. Based at least on the leakage information and / or the leakage data, a reporting message is generated and uploaded to the control center via the communication module.

[0006] Optionally, determining the corresponding leakage current data based on the leakage current information includes: Determine the time point of leakage occurrence corresponding to the leakage information; Determine multiple cycles corresponding to the leakage current occurrence time point, wherein the leakage current occurrence time point is included in the multiple cycles; Obtain the current waveform signals corresponding to the multiple cycles; Based on the current waveform signals corresponding to the multiple cycles, the leakage current type information is determined through waveform feature analysis.

[0007] Optionally, the reporting message is generated based at least on the leakage current data and includes information related to the leakage current location; The control center is configured to determine a leakage fault location interval in multiple intervals based on the leakage location information contained in the reporting messages sent by the multiple power line carrier smart control power supplies. The multiple intervals are determined according to the line topology formed by the multiple power line carrier smart control power supplies.

[0008] Optionally, the leakage current location information includes leakage current intensity; The leakage fault location information contained in the reported messages sent by the multiple power line carrier smart control power supplies is used to determine the leakage fault location interval in multiple intervals, including: Among the leakage current intensities included in each of the received leakage current location related information, a target leakage current intensity less than the intensity threshold is determined; Among the plurality of intervals, an interval matching each of the target leakage current intensities is determined as the leakage fault location interval.

[0009] Optionally, the leakage current detection module includes: Two input terminals are used to acquire the electrical signal corresponding to the leakage current. The first diode has its positive terminal connected to one of the input terminals and its negative terminal connected to the other input terminal. The second diode has its positive terminal connected between the negative terminal of the first diode and the corresponding input terminal, and its negative terminal connected between the positive terminal of the first diode and the corresponding input terminal. The comparison unit has its non-inverting input connected between the positive terminal of the first diode and the negative terminal of the second diode, and its output connected to the analog-to-digital converter (ADC) interface used to generate and output the leakage current information. The third resistor is connected at both ends between the negative terminal of the first diode and the positive terminal of the second diode, and at the inverting input terminal of the comparison unit; A fourth resistor and a third capacitor, one end of the fourth resistor is connected between the third resistor and the inverting input terminal of the comparator unit via the third capacitor, and the other end of the fourth resistor is connected between the third resistor and the positive terminal of the second diode; A first capacitor, one end of which is connected between the output terminal of the comparator unit and the ADC interface, and the other end of which is connected to the ground terminal of the comparator unit; and A reference voltage providing unit has its voltage output terminal connected between the non-inverting input terminal of the comparison unit and the positive terminal of the first diode.

[0010] Optionally, the reference voltage providing unit includes: A voltage follower, the output terminal of which is used as the voltage output terminal; Second capacitor; Reference power supply; and The first resistor and the second resistor are connected in series. One end of the series connection is used for grounding and is also used to connect to the input terminal of the voltage follower via the second capacitor. The other end of the series connection is connected to the reference power supply. The input terminal of the voltage follower is also connected between the first resistor and the second resistor.

[0011] Optionally, the power line carrier intelligent control power supply further includes: An electrical parameter acquisition module is used to acquire electrical parameters of the light source and / or the power line carrier intelligent control power supply to generate electrical parameter information; The main control module is further configured as follows: Receive the electrical parameter information; The step of generating a reporting message based at least on the leakage current information and / or the leakage current data includes: The reporting message is generated based on at least one of the leakage current information and the leakage current data, as well as the electrical parameter information.

[0012] Optionally, the reporting message carries a background leakage current value determined by the electrical parameter information, or the electrical parameter information carried in the reporting message is at least used by the control center to determine the background leakage current value, wherein the background leakage current value is suitable for indicating the background leakage current generated by the circuit device during non-fault periods, and the circuit device includes the circuit device corresponding to the light source and / or the circuit device corresponding to the power line carrier intelligent control power supply; The reporting message is at least used to instruct the control center to analyze the background leakage current change trend based on the background leakage current value, and to issue an early warning message associated with the power line carrier intelligent control power supply when the background leakage current change trend meets the early warning conditions.

[0013] Optionally, the reporting message carries the electrical parameter information; The reporting message is also used to instruct the control center to extract the first frequency feature and the second frequency feature from the electrical parameter information, perform attention calculation based on the first frequency feature and the second frequency feature to obtain a comprehensive feature, and determine the fault trend prediction result of the power line carrier intelligent control power supply based on the background leakage current change trend and the comprehensive feature. The first frequency corresponding to the first frequency feature is the driving frequency of the light source, and the second frequency corresponding to the second frequency feature is an integer multiple of the driving frequency.

[0014] Optionally, the power line carrier intelligent control power supply further includes at least one of the following: A real-time clock module is used to send time information to the main control module; The energy storage module is used to provide electrical energy to the power line carrier intelligent control power supply; The PCB board, on which the drive power module, the communication module and the main control module are all mounted; The outer casing has an internally defined accommodating space, in which the drive power module, the communication module, and the main control module are all housed.

[0015] In summary, the embodiments of this application have at least the following beneficial effects: Using the embodiments of this application, the main control module in the power line carrier intelligent control power supply can obtain leakage information generated by the leakage detection module, and determine the corresponding leakage type information and leakage location information accordingly, so as to efficiently perform automatic analysis of leakage events. It can also upload the reporting message generated by the leakage information and / or leakage data to the control center via power line carrier, so as to conduct further leakage event analysis, thereby improving the accuracy and efficiency of leakage location. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the power line carrier intelligent control power supply with leakage current positioning provided in the embodiments of this application; Figure 2 This is another structural schematic diagram of the power line carrier intelligent control power supply with leakage current positioning provided in the embodiments of this application; Figure 3 This is a schematic diagram of multiple LED lights provided in an embodiment of this application; Figure 4 This is a circuit diagram of the leakage current detection module provided in an embodiment of this application; Figure 5 This is a circuit diagram of the electrical parameter acquisition module and the corresponding isolation circuit provided in the embodiments of this application; Figure 6 This is a circuit diagram of the LED dimming circuit provided in the embodiments of this application; Figure 7 This is a circuit diagram of the real-time clock module provided in an embodiment of this application; Figure 8 This is a circuit diagram of the main control MCU provided in the embodiments of this application; Figure 9 This is a circuit diagram of the communication module provided in an embodiment of this application. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments / examples are only a part of the embodiments / examples of this application, and not all of the embodiments / examples. Based on the embodiments / examples in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0018] In the description of this application, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more. In the description of this application, the term "comprising" and its variations are open-ended, meaning "including but not limited to." The term "based on" means "at least partially based on." The term "according to" means "at least partially according to." The term "one embodiment / example" means "at least one embodiment / example"; the term "another embodiment / example" means "at least one additional embodiment / example"; the term "some embodiments / examples" means "at least some embodiments / examples."

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0020] In the description of this application, it should be noted that, unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing specific embodiments only and is not intended to limit the application. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In related technologies, to achieve precise control (such as switching, dimming, and / or color adjustment) of light-emitting diode (LED) lamps, a functionally decoupled architecture is generally adopted, where the LED driver power supply and the main control module are two independent physical entities. The LED driver power supply is used for power conversion, connecting to AC mains (e.g., 220V AC) at one end and the light source at the other. This allows the LED driver power supply to safely and efficiently convert AC into constant current or constant voltage DC power required by the LED light source and transmit it to the light source. The main control module, on the other hand, is responsible for communication and control, receiving instructions from the upper-level control system (such as a gateway or cloud platform) through different communication interfaces.

[0022] The communication methods in related technologies can be mainly divided into two categories.

[0023] Firstly, wired control solutions: such as DALI (Digital Addressable Lighting Interface), 0-10V analog dimming, KNX (Konnex) bus, etc. These solutions require the additional deployment of dedicated control signal cables throughout the building, from the system host to the main control module of each luminaire, forming an independent control network.

[0024] Secondly, wireless control solutions, such as Zigbee, Wi-Fi, and Bluetooth. While these solutions eliminate the need for long-distance signal cabling, each light fixture's main control module still needs to integrate a wireless transceiver module and requires an additional low-voltage power supply line (such as a live wire and a neutral wire) to connect to the mains power supply for operation.

[0025] The relevant technology has at least one of the following problems.

[0026] The installation process is complex, and wiring and labor costs are high: Regardless of the communication scheme used, during final installation, the independent LED driver power supply and main control module need to be connected via an additional set of low-voltage signal lines (such as Pulse-Width Modulation (PWM) lines or DALI lines) to transmit specific dimming commands. Therefore, a complete intelligent lighting system typically involves multiple types of cable connections, resulting in high wiring complexity and increased wiring difficulty. Installers need to perform multiple and various wiring operations, such as connecting the main power line, laying dedicated signal lines (wired solution) or connecting the power supply line to the controller (wireless solution), and finally connecting the control line between the controller and the driver power supply. This complexity not only significantly extends installation time but also increases the cost of wiring materials, construction costs, and debugging rework costs due to wiring errors (such as reversed polarity or protocol incompatibility).

[0027] Low system integration and poor space utilization: The driver power supply and the main control module are two independent modules, each requiring its own housing, printed circuit board (PCB), connectors and heat dissipation structure, which leads to a significant increase in overall volume and weight. In applications where space is extremely sensitive, such as downlights, light strips, and panel lights, this severely restricts the industrial design of the lighting fixtures, forcing the size of the fixtures to increase or sacrificing aesthetic design to accommodate the modules.

[0028] Overall reliability is reduced due to excessive external connection points: each external connector and terminal block is a potential point of failure. Over long-term use, these connection points may experience increased contact resistance or even loosening and detachment due to vibration, thermal expansion and contraction, air oxidation, etc., causing signal interruption, control failure, or arcing risks, directly affecting the stability and lifespan of the entire lighting system.

[0029] High overall manufacturing and supply chain management costs: Manufacturers need to design, mold, produce, test, and stock two separate products. This results in double the material costs (such as housing, packaging, PCB) and management costs (such as inventory, logistics, quality control), making it difficult to effectively reduce the cost per lamp through economies of scale.

[0030] The integrity and interference immunity of signal transmission face challenges: the signals transmitted between the main control module and the drive power supply are typically low-voltage analog signals (such as 0-10V) or digital signals (such as PWM). In complex building electrical environments, these signal lines are susceptible to electromagnetic interference (EMI) from other electrical or wireless devices. Long-distance transmission may also cause signal attenuation, ultimately affecting the consistency, smoothness, and accuracy of dimming.

[0031] Lack of fault location capability for leakage current: Related technologies struggle to accurately pinpoint the fault location when a leakage current occurs, requiring maintenance personnel to troubleshoot section by section, resulting in low efficiency and safety hazards in complex outdoor environments. Alternatively, when a single-lamp main control module with leakage current detection is used with a leakage current protector in the distribution box, the protector trips after a leakage current event, making it difficult for the single-lamp main control module to report the leakage current information to the system.

[0032] The embodiments of this application subsequently provide a power line carrier intelligent control power supply with leakage current location, which aims to at least partially solve the problems existing in the above-mentioned related technologies.

[0033] Firstly, see [the following] Figure 1 The diagram shows a structural schematic of a power line carrier intelligent control power supply with leakage current location according to an embodiment of this application. The power line carrier intelligent control power supply 100 includes: The drive power module 101 is electrically connected to the light source; Communication module 102 is electrically connected to the power line. The communication module 102 is used to communicate with the control center via the power line using power line carrier communication. For example, the control center can be a centralized controller, cloud, etc. Leakage detection module 103 is used to generate leakage information corresponding to the leakage current when leakage current of the light source and / or the power line carrier intelligent control power supply is detected; and The main control module 104 is used to receive control signals from the control center via the communication module 102, and control the drive power module 101 to output drive signals to the light source according to the control signals. The main control module 104 is also configured to: Receive the leakage current information; Based on the leakage information, the corresponding leakage data is determined, wherein the leakage data includes leakage type information and leakage location information. At least based on the leakage information and / or the leakage data, a reporting message is generated and uploaded to the control center via the communication module 102.

[0034] It is understood that the main control module 104 in this embodiment can be used to intelligently analyze leakage data (such as leakage type information and leakage location information), and therefore can also be called a smart main control module. For example, a lightweight artificial intelligence model can be deployed in the main control module 104 to achieve intelligent analysis.

[0035] In some examples, the light source can be an LED light source / LED luminaire. Accordingly, the driver power supply module 101 can be an LED driver power supply.

[0036] In some examples, the communication module 102 can be a power line communication (PLC) module 102. The communication module 102 can demodulate control signals transmitted from the control center via the power line and transmit the demodulated control signals to the main control module 104. The communication module 102 can also modulate reporting messages from the main control module 104 into power line carrier signals and transmit the modulated reporting messages to the control center via the power line. Specifically, the communication module 102 may include a coupling circuit (e.g., containing an LC network and a high-voltage capacitor, which can be used to separate power frequency signals from high-frequency communication signals), a modem chip (for demodulation and modulation), and / or isolation and protection circuits (such as gas discharge tubes or TVS diodes, which can effectively reduce the probability of high-voltage surges and interference causing damage to downstream low-voltage circuits). This communication module 102 allows control signals and power to coexist on the same conductor (i.e., the power line) without interfering with each other.

[0037] In some examples, the drive power module 101 may include a complete, high-performance AC-DC conversion circuit. This AC-DC conversion circuit may include an EMI filter circuit, a rectifier bridge, a power factor correction circuit, a main control PWM chip and power switching transistors, as well as output rectification, filtering, and sampling circuitry. This AC-DC conversion circuit can be used to generate a stable, efficient, high-power-factor constant current output to directly drive a light source (LED chips). The drive signals (e.g., output current value, output voltage value) of the drive power module 101 / the AC-DC conversion circuit can be precisely controlled by the main control module 104.

[0038] In some examples, the control signal may include target brightness information and / or target color temperature information of the light source. In this case, the main control module 104 can control the drive power module 101 to generate a drive signal that matches the target brightness information and / or target color temperature information, and output this drive signal to the light source. The main control module 104 can control the drive power module 101 by outputting a PWM signal to it. The control of the drive power module 101 can be adjusted by changing the duty cycle of the PWM signal. This PWM signal can be used to control the feedback terminal of the drive power module 101, thereby steplessly adjusting the output current and output voltage of the drive power module 101 to achieve precise dimming.

[0039] See some examples. Figure 2The main control module 104 can be a microcontroller unit (MCU), referred to as the main control MCU. In this case, the main control module 104 can have a PLC communication protocol stack that matches the PLC communication module so that it can communicate and interact with the PLC communication module.

[0040] In some examples, the reported message may carry the identification information of the main control module 104 or the identification information of the power line carrier smart control power supply.

[0041] In some examples, the reporting message may be generated solely from leakage current information, for example, by including leakage current information in the reporting message; the reporting message may be generated solely from leakage current data, for example, by including leakage current data in the reporting message; or the reporting message may be generated from both leakage current information and leakage current data, for example, by including both leakage current information and leakage current data in the reporting message.

[0042] In one optional implementation, determining the corresponding leakage current data based on the leakage current information includes: Determine the time point of leakage occurrence corresponding to the leakage information; Determine multiple cycles corresponding to the leakage current occurrence time point, wherein the leakage current occurrence time point is included in the multiple cycles; Obtain the current waveform signals corresponding to the multiple cycles; Based on the current waveform signals corresponding to the multiple cycles, the leakage current type information is determined through waveform feature analysis.

[0043] In some examples, the leakage occurrence time point can refer to the time point when leakage current corresponding to leakage information is detected. After determining the leakage occurrence time point, multiple cycles including the leakage occurrence time point can be further determined. These multiple cycles can include: the cycle in which the leakage occurrence time point is located, and at least one cycle before the cycle and / or at least one cycle after the cycle.

[0044] In some examples, the current waveform signal corresponding to each cycle can be used to indicate the current waveform signal acquired by the light source and / or power line carrier smart control power supply detection within that cycle. For example, the current waveform signal can be included in the subsequent electrical parameter information, that is, the current waveform signal can be acquired by the light source and / or power line carrier smart control power supply detection through the electrical parameter acquisition module.

[0045] In some examples, waveform feature analysis can be performed on the current waveform signals corresponding to multiple cycles. Based on the differences in waveform features of different leakage current types, the leakage current type information corresponding to the leakage current information can be determined. For example, the leakage current type can include at least one of the following: continuous leakage current (corresponding waveform feature is a sine wave), arc leakage current (corresponding waveform feature is a pulse spike waveform), and device start-up impact (corresponding waveform feature is a short-term fluctuation waveform).

[0046] In this embodiment, by locking the time point of leakage and analyzing the characteristics of current waveforms in multiple adjacent cycles, it is possible to effectively distinguish different types of fault signals such as continuous leakage, arcing leakage, and equipment startup impact. This avoids misjudging the current fluctuations during normal equipment startup as leakage faults and can also accurately identify hidden faults such as arcing leakage that are prone to fire. This provides a clear basis for subsequent fault location and handling, and improves the accuracy and efficiency of fault diagnosis.

[0047] In one optional implementation, the reporting message is generated at least based on the leakage current data and includes leakage current location-related information; The control center is configured to determine a leakage fault location interval in multiple intervals based on the leakage location information contained in the reporting messages sent by the multiple power line carrier smart control power supplies. The multiple intervals are determined according to the line topology formed by the multiple power line carrier smart control power supplies.

[0048] In some examples, see Figure 3 The diagram shows multiple LEDs (i.e., multiple light sources), each controlled by a controller (i.e., main control module 104). These controllers (corresponding one-to-one with multiple power line carrier intelligent control power supplies) are designated as controllers 1, 2, 3, 4, 5, and 6. Each LED can be connected to the same live wire and corresponding neutral wire via its respective controller, thus enabling the controllers to form a line topology connection, and consequently, allowing the multiple power line carrier intelligent control power supplies to form a line topology structure. In this line topology structure, adjacent power line carrier intelligent control power supplies (i.e., adjacent controllers) can form an interval; for example, the interval formed between controller 1 and controller 2 is denoted as interval 1. The leakage fault location interval can refer to the interval where a leakage fault has occurred among these intervals.

[0049] In some examples, leakage current location information can include relevant electrical parameter information, such as current and voltage. In this way, the control center can analyze the electrical parameter information within the leakage current location information and determine the leakage fault location range from multiple intervals based on the analysis results.

[0050] In one optional implementation, the leakage current location information includes leakage current intensity; The leakage fault location information contained in the reported messages sent by the multiple power line carrier smart control power supplies is used to determine the leakage fault location interval in multiple intervals, including: Among the leakage current intensities included in each of the received leakage current location related information, a target leakage current intensity less than the intensity threshold is determined; Among the plurality of intervals, an interval matching each of the target leakage current intensities is determined as the leakage fault location interval.

[0051] Understandably, after the leakage current detection module 103 of each power supply detects leakage current, the main control module 104 of each power supply can generate leakage location information including leakage current intensity, and upload a report message containing this leakage location information to the control center via power line carrier communication module 102. The control center receives the report messages from each power supply, extracts the leakage current intensity, filters out target leakage current intensities less than a preset intensity threshold, and matches the target leakage current intensities with each interval to determine the leakage fault location interval.

[0052] For example, assuming the strength threshold is 500mA, the leakage current intensity uploaded by controller 1 and controller 2 is 500mA, and the leakage current intensity uploaded by controller 3 is less than 30mA (which can be used as the target leakage current intensity), the control center determines that there is a leakage fault in interval 2 (the interval formed between controller 2 and controller 3) after matching.

[0053] For example, assuming the strength threshold is 500mA, the leakage current intensity uploaded by controller 1 is 500mA, the leakage current intensity uploaded by controller 2 is 200mA, and the leakage current intensity uploaded by controller 3 is less than 30mA (which can be used as the target leakage current intensity), the control center determines after matching that there is a leakage fault in both interval 1 (the interval formed between controller 1 and controller 2) and interval 2 (the interval formed between controller 2 and controller 3).

[0054] In some examples, after the control center determines the location range of the leakage fault, it can mark the location range of the leakage fault on the map in real time, issue an audible and visual alarm based on the location range of the leakage fault, and push a maintenance work order based on the location range of the leakage fault.

[0055] In this embodiment, the line topology can be used to divide the area into sections, and the leakage current intensity data of multiple nodes and threshold filtering can be combined to accurately locate the leakage fault section and improve the efficiency of fault diagnosis.

[0056] In one alternative implementation, see [link to relevant documentation]. Figure 4The diagram shows a circuit schematic of a leakage current detection module provided in an embodiment of this application. The leakage current detection module 103 includes: Two input terminals are used to acquire the electrical signal corresponding to the leakage current. The positive terminal of the first diode D15 is connected to one of the input terminals, and the negative terminal is connected to the other input terminal; The positive terminal of the second diode D16 is connected between the negative terminal of the first diode D15 and the corresponding input terminal, and the negative terminal is connected between the positive terminal of the first diode D15 and the corresponding input terminal. The comparison unit U1 has its non-inverting input terminal connected between the positive terminal of the first diode D15 and the negative terminal of the second diode D16, and its output terminal connected to the analog-to-digital converter (ADC) interface ADC1 used to generate and output the leakage current information. The third resistor R3 is connected at both ends between the negative terminal of the first diode D15 and the positive terminal of the second diode D16, and the inverting input terminal of the comparison unit U1, respectively. The fourth resistor R4 and the third capacitor C3 are connected together. One end of the fourth resistor R4 is connected between the third resistor R3 and the inverting input terminal of the comparator unit U1 via the third capacitor C3. The other end of the fourth resistor R4 is connected between the third resistor R3 and the positive terminal of the second diode D16. The first capacitor C1 has one end connected between the output terminal of the comparator unit U1 and the ADC interface ADC1, and the other end connected to the ground terminal of the comparator unit U1; and The reference voltage providing unit has its voltage output terminal connected between the non-inverting input terminal of the comparison unit U1 and the positive terminal of the first diode D15.

[0057] In some examples, see Figure 3 The leakage current detection module 103 may also include a current transformer. The two input terminals can be electrically connected to the busbar in the power supply for connecting the neutral and live wires through the current transformer, thereby collecting the leakage current on the busbar.

[0058] In some examples, the leakage detection module 103 can be powered by an energy storage module. When a leakage occurs, the leakage protection device trips, and the live and neutral wires are disconnected. However, an energy storage device in the power supply (such as a micro battery or supercapacitor) can keep the power supply working for a period of time. The reporting message is then reported to the control center (such as a centralized controller or cloud platform) through the PLC communication module.

[0059] In this embodiment, see Figure 4IN+ and IN- are two input terminals, serving as differential sampling input ports for the leakage current. These ports are used to acquire the electrical signal corresponding to the leakage current. Diodes D15 and D16, resistors R3 and R4, and capacitor C3 are used to implement differential signal input and isolation protection. Specifically, diodes D15 and D16 form a bidirectional limiting circuit. When the input voltage difference is too large, this circuit clamps the voltage within a safe range, preventing damage to the subsequent operational amplifier from overvoltage. Resistors R3 and R4, along with capacitor C3, form a differential RC filter network. This network filters out high-frequency interference in the input signal, improving noise immunity. The comparator unit U1 (which can be an operational amplifier, for example) and the first capacitor C1 can achieve differential amplification and signal output. Specifically, the comparator unit U1 constitutes a differential amplifier circuit, comparing and amplifying the voltage difference between IN+ and IN- with the reference voltage provided by the reference voltage unit output. The first capacitor C1 can serve as a filter capacitor at the output of the comparator unit U1, which can be used to smooth the output signal and further reduce high-frequency ripple. The ADC interface can convert the analog leakage current signal into a digital signal for MCU processing.

[0060] In one alternative implementation, the reference voltage providing unit includes: Voltage follower U2, the output terminal is used as the voltage output terminal; Second capacitor C2; Reference power supply VCC1; and The first resistor R1 and the second resistor R2 are connected in series. One end of the series connection is used for grounding and is also used to connect to the input terminal of the voltage follower U2 via the second capacitor C2. The other end of the series connection is connected to the reference power supply. The input terminal of the voltage follower U2 is also connected between the first resistor R1 and the second resistor R2.

[0061] In this embodiment, see Figure 4 The first resistor R1 and the second resistor R2 form a voltage divider circuit. This voltage divider circuit can be used to obtain a stable DC reference voltage from the reference power supply VCC1. The second capacitor C2 can filter the divided signal, remove high-frequency noise, and provide a clean bias voltage for the non-inverting input of the voltage follower U2. Furthermore, the voltage follower U2 can enhance the driving capability and isolate the preceding voltage divider circuit from the subsequent amplifier circuit, preventing load effects from affecting the stability of the reference voltage provided by the reference voltage providing unit.

[0062] In one optional implementation, the power line carrier intelligent control power supply further includes: An electrical parameter acquisition module is used to acquire electrical parameters of the light source and / or the power line carrier intelligent control power supply to generate electrical parameter information.

[0063] In some examples, the electrical parameter acquisition module can be electrically connected to the light source to detect and acquire the electrical parameters of the light source, and / or, the electrical parameter acquisition module can be electrically connected between the light source and the drive power supply module 101 to detect and acquire electrical parameters (e.g., output current value, output voltage value) related to the drive signal output by the drive power supply module 101, and / or, the electrical parameter acquisition module can also be electrically connected to any other module / component in the power line carrier intelligent control power supply to acquire corresponding electrical parameters. Furthermore, the electrical parameter acquisition module can also be electrically connected to the main control module 104 to transmit the generated electrical parameter information to the main control module 104; for example, the electrical parameter acquisition module can be connected to the RXD2 pin of the main control MCU. This electrical parameter acquisition module can also calculate electrical parameters such as real-time power and / or real-time energy consumption based on the detected output current and output voltage values.

[0064] In some examples, see Figure 5 The diagram illustrates the electrical parameter acquisition module and corresponding isolation circuit provided in this embodiment. The electrical parameter acquisition module can acquire parameters such as current, voltage, and power. Specifically, the voltage signals of the live wire (L) and neutral wire (N) in the diagram are attenuated to a safe voltage range acceptable to chip U8 through a voltage divider network composed of resistors R39, R40, R41, R42, and R18. Furthermore, resistors R35 and R36 and capacitors C22 and C23 form a filter network to perform low-pass filtering on the sampled signal to remove high-frequency interference and ensure that the signal input to U8 is stable and clean. U8 can be an integrated power parameter metering chip with an ADC (analog-to-digital converter), which converts analog voltage and current signals into digital signals and outputs them through a serial communication interface (TX pin). The VDD pin of U8 is powered by a +5V power supply, and C21 is a power supply decoupling capacitor to ensure stable power supply. Here, the collected parameters such as current, voltage, and power can be converted into digital signals by U8 and transmitted to the MCU via serial transmission. The signals can pass through U7 (a high-speed optocoupler isolation chip that transmits data via optical signals, cutting off the electrical connection between the electrical parameter acquisition module (high-voltage side) and the MCU (low-voltage side)) to achieve electrical isolation between high-voltage and low-voltage circuits and safely transmit the data to the MCU. The MCU periodically packages the data and feeds it back to the centralized controller or control center.

[0065] The main control module 104 is further configured as follows: Receive the electrical parameter information; The step of generating a reporting message based at least on the leakage current information and / or the leakage current data includes: The reporting message is generated based on at least one of the leakage current information and the leakage current data, as well as the electrical parameter information.

[0066] In one optional implementation, the reporting message carries a background leakage current value determined by the electrical parameter information, or the electrical parameter information carried in the reporting message is at least used by the control center to determine the background leakage current value, wherein the background leakage current value is suitable for indicating the background leakage current generated by the circuit device during non-fault periods, and the circuit device is the circuit device of the light source and / or the circuit device in the power line carrier intelligent control power supply.

[0067] Understandably, the electrical parameter acquisition module can acquire the electrical parameters of the light source and / or power supply and generate electrical parameter information. After receiving this electrical parameter information, the main control module 104 can combine it with the leakage information generated by the leakage detection module 103 and / or the leakage data determined by the main control module 104 to generate a reporting message, which is then uploaded to the control center (central controller) via power line carrier communication through the communication module 102. The reporting message carries the background leakage value determined by the electrical parameter information, or carries electrical parameter information for the control center to determine the background leakage value. This background leakage value indicates the background leakage current generated by circuit devices (such as electronic components and / or line capacitors) during non-fault periods.

[0068] In this embodiment, the main control module 104 can determine the background leakage current value based on the electrical parameter information to generate a reporting message carrying the background leakage current value; or, the main control module 104 can generate a reporting message carrying electrical parameter information, so that the control center can determine the background leakage current value based on the electrical parameter information carried in the reporting message.

[0069] The reporting message is at least used to instruct the control center to analyze the background leakage current change trend based on the background leakage current value, and to issue an early warning message associated with the power line carrier intelligent control power supply when the background leakage current change trend meets the early warning conditions.

[0070] Understandably, the control center can collect the background leakage current values ​​of each power node over a long period of time and continuously analyze the trend of background leakage current changes. When the background leakage current value corresponding to a certain power source shows a slow upward trend (the value of the increase in background leakage current value in each cycle exceeds the trend threshold in multiple consecutive cycles, such as an increase of 0.5mA per week), even if the value of the increase in background leakage current value in a single cycle does not exceed the preset risk threshold, an early warning message associated with that power source can be issued to indicate an insulation degradation warning and to warn of a decline in insulation performance.

[0071] In some examples, suspected fault areas can be marked on the map in real time based on the warning information, and audible and visual alarms can be issued based on the warning information, and maintenance work orders can be pushed based on the warning information.

[0072] In this embodiment, by tracking the trend of background leakage current changes over a long period of time, potential insulation degradation can be detected in advance, enabling early warning, avoiding leakage faults and safety risks. Moreover, the warning can be triggered without exceeding the leakage current limit, breaking the passive protection mode, allowing sufficient time for operation and maintenance, improving the efficiency of handling potential hazards, and reducing operation and maintenance costs.

[0073] In one optional implementation, the reporting message carries the electrical parameter information; The reporting message is also used to instruct the control center to extract the first frequency feature and the second frequency feature from the electrical parameter information, perform attention calculation based on the first frequency feature and the second frequency feature to obtain a comprehensive feature, and determine the fault trend prediction result of the power line carrier intelligent control power supply based on the background leakage current change trend and the comprehensive feature. The first frequency corresponding to the first frequency feature is the driving frequency of the light source, and the second frequency corresponding to the second frequency feature is an integer multiple of the driving frequency.

[0074] In some examples, a pre-trained fault trend prediction model can be used to determine the fault trend prediction result based on the background leakage current change trend and comprehensive characteristics. This fault trend prediction model can be a trained model capable of using the background leakage current change trend and comprehensive characteristics as model input and the fault trend prediction result as model output. During specific training, the background leakage current sample change trend and sample characteristics can be used as sample data (this sample data also carries the expected corresponding fault label, which represents the corresponding expected fault trend result). The model generates a fault trend sample prediction result based on this sample data. Based on the difference between the fault trend sample prediction result and the expected fault trend result represented by the label, a general loss function is used to calculate the loss value. A general training algorithm (such as gradient descent) is then used to train the model based on this loss value, so that the trained model possesses the aforementioned capabilities. For example, the model may include an input representation layer, a feature fusion and representation layer, and a prediction output layer. The input representation layer can receive data from the input model and convert the data into the desired feature vector form. For example, the input representation layer can use word embeddings or pre-trained language models (such as bidirectional language representation models based on the Transformer architecture) to generate semantic vectors, and / or use embedding layers to generate dense vectors. The feature fusion and representation layer can be used to fuse the feature vectors converted by the input representation layer. For example, the feature fusion and representation layer can implement the fusion through fully connected layers or attention mechanism layers. The prediction output layer can be used to generate prediction results based on the fused features. For example, the prediction output layer can use a softmax layer to output the probability distribution for different categories, and then output the prediction result based on the probability (for example, it can output the top one or more classification results with the highest probability as the prediction result).

[0075] In some examples, this can also be achieved through a large model. For instance, fault trend prediction prompts, background leakage current change trends, and comprehensive features can be input into a large model to obtain the fault trend prediction results output by the large model. The fault trend prediction prompts can be used to prompt the large model to use comprehensive features as an aid to further analyze the background leakage current change trends.

[0076] In some examples, the electrical parameter information can be subjected to Fourier transform processing or other frequency domain analysis processing to filter out the first characteristic frequency point that is consistent with the first frequency (i.e. the driving frequency of the light source). Based on the first characteristic frequency point, the amplitude, phase, waveform distortion rate and other parameters of the frequency band that match the first characteristic frequency point can be extracted from the electrical parameter information to form the first frequency feature.

[0077] In some examples, the electrical parameter information can be processed by Fourier transform or other frequency domain analysis to filter out the second characteristic frequency point that is consistent with the second frequency (i.e., an integer multiple of the driving frequency, such as 2 times, 3 times, etc.). Based on the second characteristic frequency point, the amplitude, phase, waveform distortion rate and other parameters of the frequency band that match the second characteristic frequency point can be extracted from the electrical parameter information to form the second frequency feature.

[0078] In this embodiment, by combining the background leakage current change trend with the frequency characteristics of electrical parameters, attention calculation is used to fuse multi-dimensional data and then predict the fault trend prediction result. Compared with the prediction method that relies on only a single parameter, it can more comprehensively capture the potential fault risks in the operation of the power supply, greatly improve the accuracy and reliability of the prediction result, and provide a reliable basis for handling faults in advance. Furthermore, by extracting the first and second frequency features related to the light source driving frequency and harmonics, the key frequency components in the electrical parameters can be accurately captured, effectively uncovering hidden fault features such as the light source driving state and the stability of power supply operation, avoiding fault omissions caused by ignoring frequency characteristics, and realizing refined monitoring of power supply faults.

[0079] In one optional implementation, the power line carrier intelligent control power supply further includes at least one of the following: The real-time clock module is used to send time information to the main control module 104; The energy storage module is used to provide electrical energy to the power line carrier intelligent control power supply; The PCB board, the driving power module 101, the communication module 102 and the main control module 104 are all mounted on the PCB board; The outer casing has an internally defined accommodating space, in which the drive power module 101, the communication module 102, and the main control module 104 are all housed.

[0080] In some examples, the Real Time Clock (RTC) module can provide an independent, continuously operating, and precise clock source for the power line carrier intelligent control power supply. Even in the event of a power outage, the RTC module can maintain its timing using a backup battery (such as a button cell battery) connected to it. The RTC module can provide the main control module 104 with accurate time information (including year, month, day, hour, minute, second, etc.), enabling precise timestamps to be added to the execution of all control commands, changes in status, and the recording of electrical parameters.

[0081] In some examples, energy storage modules can be used to supply power to at least some modules / components in a power line carrier smart control power supply. Energy storage modules may include micro-batteries, supercapacitors, etc.

[0082] In some examples, the power supply module 101, the communication module 102, and the main control module 104 can all be integrated on the same PCB board.

[0083] In some examples, the power supply module 101, communication module 102, and main control module 104 can all be encapsulated within the same housing. The housing can meet safety and heat dissipation requirements.

[0084] In some examples, see Figure 6 The diagram illustrates a circuit diagram of an LED dimming circuit provided in an embodiment of this application. Specifically, the PWM dimming signal (PWM pin) from the MCU can be input to a multi-stage RC low-pass filter network composed of resistors R24 and R47 and capacitors C26 and C25. This multi-stage RC low-pass filter network can smoothly filter the pulsed PWM signal into a continuous DC voltage and effectively filter out high-frequency ripples to obtain a clean analog voltage. The first-stage amplifier (U12.1) is a non-inverting proportional amplifier circuit composed of an operational amplifier. Combined with a feedback network composed of resistors R45 and R46, it can amplify the filtered voltage signal to the standard dimming range of 0-10V to ensure the driving capability of the output voltage and match the input requirements of the subsequent dimming driver module. The second-stage buffer (U12.2) is a voltage follower (buffer) that can be used to isolate the pre-amplifier circuit and the subsequent driver module to avoid the load effect affecting the stability of the output voltage, while further enhancing the signal's load-carrying capability. The input of the LED constant current driver (U18) is an analog dimming voltage of 0-10V. U18 is an LED dimming driver module that can receive a voltage signal of 0-10V and output a corresponding constant current. The higher the voltage, the greater the output constant current value, and the brighter the LED load. The constant current output characteristic ensures that the LED can work stably under different brightness levels, avoiding brightness changes or damage caused by voltage fluctuations.

[0085] In some examples, see Figure 7 The diagram illustrates a circuit diagram of the real-time clock module provided in this embodiment. The main power supply for the real-time clock module can be from the system power supply VCC, providing power to the real-time clock chip U9 through diode D14. The backup power supply can be from the coin cell battery U17, providing power to U9 through diode D13. When VCC is supplying power normally, D14 is turned on and D13 is turned off, the chip is powered by VCC, and the coin cell battery is in standby mode. When the 220V input power is interrupted, causing VCC to lose power, D13 automatically turns on and D14 is turned off, the chip seamlessly switches to coin cell battery power supply, ensuring uninterrupted time counting. Capacitors C28 and C29 are power supply decoupling capacitors for VCC and the coin cell battery, respectively, used to filter out power supply noise and ensure stable power supply.

[0086] In some examples, see Figure 8 The diagram shows the circuit diagram of the main control MCU provided in the embodiment of this application, where U13 is the chip of the main control MCU.

[0087] In some examples, see Figure 9 The diagram illustrates a circuit diagram of the communication module provided in this embodiment. The communication module 102 is a carrier communication module, and U16 is a power line carrier transceiver chip responsible for signal modulation and demodulation. It receives the modulated carrier signal from the power line, demodulates the carrier signal into digital instructions recognizable by the MCU, and sends them to the main control MCU via the RXD1 pin. The MCU sends the data to be uploaded to U16 via the TXD1 pin, and U16 modulates the data into a high-frequency carrier signal before outputting it to the coupling circuit. Coupler L3 is a high-frequency isolation transformer. Its function is to safely couple the carrier signal from the carrier transceiver chip to the AC220V power line, while simultaneously achieving electrical isolation between strong and weak currents to prevent high voltage damage to the communication chip. Safety capacitor CX2 is connected between the live wire (L_IN) and the neutral wire (N_IN) for high-frequency carrier signal coupling transmission. Its safety design also prevents the impact of power frequency high voltage on the communication circuit. A bidirectional Zener diode U15 is connected in parallel to the output side of coupler L3 to clamp surge voltages and interference pulses on the power line, protecting the communication module 102 from damage caused by power grid spike voltages.

[0088] In conjunction with the above-mentioned embodiments, the embodiments of this application may have at least one of the following beneficial effects.

[0089] 1. High Integration and Simplified Structure: Through three-in-one integration, the device is miniaturized and lightweight, reducing its volume by more than 40% compared to discrete solutions in related technologies. This provides lighting manufacturers with unprecedented design freedom, enabling them to develop thinner, more aesthetically pleasing, and more innovative lighting products.

[0090] 2. Extremely simplified installation process and cost savings: Achieving a "plug-and-play" installation experience. Installers only need to connect the input power line and the output load line in two steps, requiring no additional signal wiring. This not only improves installation efficiency by over 60%, but also completely eliminates the cost of signal cables and related construction, resulting in significant savings in large-scale or renovation projects.

[0091] 3. A qualitative leap in system reliability and long-term stability: By eliminating external connectors and signal lines between the controller and the driver, common sources of failure such as poor contact, oxidation, and short circuits are eliminated. The device, as a whole, is internally connected via PCB copper foil traces, providing extremely strong resistance to vibration, corrosion, and interference. This significantly extends the mean time between failures (MTBF) and greatly reduces maintenance requirements.

[0092] 4. Significant end-to-end cost advantages, enhancing product competitiveness: From a manufacturing perspective, it saves on a complete set of product housing, connectors, and packaging materials; from a supply chain perspective, the procurement, production, and inventory management of individual materials are more efficient; from a project perspective, the reduction in installation and maintenance costs is more direct. This makes the embodiments of this application highly competitive in terms of market price while providing equivalent or superior functionality.

[0093] 5. Stable and reliable communication link, unaffected by environmental constraints: Power line communication can utilize existing copper wire networks distributed throughout buildings, offering strong signal penetration, unaffected by walls, and unaffected by co-channel interference issues common in wireless signals. In complex environments such as large shopping malls, underground parking garages, and factories, it provides a more stable and consistent control experience than wireless solutions.

[0094] 6. Empowering Deep Intelligence for Refined Management: This application's embodiments go beyond mere control, integrating comprehensive electrical parameter monitoring functions. The control center can acquire real-time information on the precise power consumption, operating status, and lifespan warnings of each lamp, providing a solid data foundation for energy-saving management, predictive maintenance, and digital operation and maintenance in smart cities.

[0095] 7. Leakage current location function, improving system safety and maintainability: By integrating leakage current detection at each node and reporting it via PLC network, the system can quickly locate leakage current faults, greatly shortening the troubleshooting time, improving maintenance efficiency, and ensuring the safety of personnel and equipment. It is especially suitable for scenarios with high safety requirements such as street lights, tunnels, and outdoor lighting.

[0096] For example, you can refer to Table 1 below.

[0097] Table 1

[0098] Secondly, embodiments of this application provide a lighting control system, including: The power line carrier intelligent control power supply described in any one of the first aspects above; and Control center.

[0099] In summary, the embodiments of this application have at least the following beneficial effects: Using the embodiments of this application, the main control module in the power line carrier intelligent control power supply can obtain leakage information generated by the leakage detection module, and determine the corresponding leakage type information and leakage location information accordingly, so as to efficiently perform automatic analysis of leakage events. It can also upload the reporting message generated by the leakage information and / or leakage data to the control center via power line carrier, so as to conduct further leakage event analysis, thereby improving the accuracy and efficiency of leakage location.

[0100] Through the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary hardware platforms, or it can be implemented entirely by hardware. Based on this understanding, all or part of the technical solutions of this application that contribute to the background technology can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM (Read-Only Memory) / RAM (Random Access Memory), magnetic disk, optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0101] The above description is the preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A power line carrier intelligent control power supply with leakage current positioning, characterized in that, include: The driver power supply module is electrically connected to the light source; A communication module, electrically connected to a power line, is used to communicate with the control center via the power line using power line carrier communication. The leakage current detection module is used to generate leakage current information corresponding to the leakage current when leakage current of the light source and / or the power line carrier intelligent control power supply is detected. as well as The main control module is used to receive control signals from the control center via the communication module, and control the drive power module to output drive signals to the light source according to the control signals. The main control module is also configured to: Receive the leakage current information; Based on the leakage information, the corresponding leakage data is determined, wherein the leakage data includes leakage type information and leakage location information. Based at least on the leakage information and / or the leakage data, a reporting message is generated and uploaded to the control center via the communication module.

2. The power line carrier intelligent control power supply according to claim 1, characterized in that, The step of determining the corresponding leakage current data based on the leakage current information includes: Determine the time point of leakage occurrence corresponding to the leakage information; Determine multiple cycles corresponding to the leakage current occurrence time point, wherein the leakage current occurrence time point is included in the multiple cycles; Obtain the current waveform signals corresponding to the multiple cycles; Based on the current waveform signals corresponding to the multiple cycles, the leakage current type information is determined through waveform feature analysis.

3. The power line carrier intelligent control power supply according to claim 1, characterized in that, The reporting message is generated based on the leakage current data and includes information related to the leakage current location. The control center is configured to determine a leakage fault location interval in multiple intervals based on the leakage location information contained in the reporting messages sent by the multiple power line carrier smart control power supplies. The multiple intervals are determined according to the line topology formed by the multiple power line carrier smart control power supplies.

4. The power line carrier intelligent control power supply according to claim 3, characterized in that, The leakage current location information includes leakage current intensity; The leakage fault location information contained in the reported messages sent by the multiple power line carrier smart control power supplies is used to determine the leakage fault location interval in multiple intervals, including: Among the leakage current intensities included in each of the received leakage current location related information, a target leakage current intensity less than the intensity threshold is determined; Among the plurality of intervals, an interval matching each of the target leakage current intensities is determined as the leakage fault location interval.

5. The power line carrier intelligent control power supply according to claim 1, characterized in that, The leakage current detection module includes: Two input terminals are used to acquire the electrical signal corresponding to the leakage current. The first diode has its positive terminal connected to one of the input terminals and its negative terminal connected to the other input terminal. The second diode has its positive terminal connected between the negative terminal of the first diode and the corresponding input terminal, and its negative terminal connected between the positive terminal of the first diode and the corresponding input terminal. The comparison unit has its non-inverting input connected between the positive terminal of the first diode and the negative terminal of the second diode, and its output connected to the analog-to-digital converter (ADC) interface used to generate and output the leakage current information. The third resistor is connected at both ends between the negative terminal of the first diode and the positive terminal of the second diode, and at the inverting input terminal of the comparison unit; A fourth resistor and a third capacitor, one end of the fourth resistor is connected between the third resistor and the inverting input terminal of the comparator unit via the third capacitor, and the other end of the fourth resistor is connected between the third resistor and the positive terminal of the second diode; A first capacitor, one end of which is connected between the output terminal of the comparator unit and the ADC interface, and the other end of which is connected to the ground terminal of the comparator unit; and A reference voltage providing unit has its voltage output terminal connected between the non-inverting input terminal of the comparison unit and the positive terminal of the first diode.

6. The power line carrier intelligent control power supply according to claim 5, characterized in that, The reference voltage providing unit includes: A voltage follower, the output terminal of which is used as the voltage output terminal; Second capacitor; Reference power supply; and The first resistor and the second resistor are connected in series. One end of the series connection is used for grounding and is also used to connect to the input terminal of the voltage follower via the second capacitor. The other end of the series connection is connected to the reference power supply. The input terminal of the voltage follower is also connected between the first resistor and the second resistor.

7. The power line carrier intelligent control power supply according to any one of claims 1-6, characterized in that, The power line carrier intelligent control power supply also includes: An electrical parameter acquisition module is used to acquire electrical parameters of the light source and / or the power line carrier intelligent control power supply to generate electrical parameter information; The main control module is further configured as follows: Receive the electrical parameter information; The step of generating a reporting message based at least on the leakage current information and / or the leakage current data includes: The reporting message is generated based on at least one of the leakage current information and the leakage current data, as well as the electrical parameter information.

8. The power line carrier intelligent control power supply according to claim 7, characterized in that, The reporting message carries a background leakage current value determined by the electrical parameter information, or the electrical parameter information carried in the reporting message is at least used by the control center to determine the background leakage current value, wherein the background leakage current value is suitable for indicating the background leakage current generated by the circuit device during non-fault periods, and the circuit device includes the circuit device corresponding to the light source and / or the circuit device corresponding to the power line carrier intelligent control power supply; The reporting message is at least used to instruct the control center to analyze the background leakage current change trend based on the background leakage current value, and to issue an early warning message associated with the power line carrier intelligent control power supply when the background leakage current change trend meets the early warning conditions.

9. The power line carrier intelligent control power supply according to claim 8, characterized in that, The reported message carries the electrical parameter information; The reporting message is also used to instruct the control center to extract the first frequency feature and the second frequency feature from the electrical parameter information, perform attention calculation based on the first frequency feature and the second frequency feature to obtain a comprehensive feature, and determine the fault trend prediction result of the power line carrier intelligent control power supply based on the background leakage current change trend and the comprehensive feature. The first frequency corresponding to the first frequency feature is the driving frequency of the light source, and the second frequency corresponding to the second frequency feature is an integer multiple of the driving frequency.

10. The power line carrier intelligent control power supply according to any one of claims 1-6, characterized in that, The power line carrier intelligent control power supply also includes at least one of the following: A real-time clock module is used to send time information to the main control module; The energy storage module is used to provide electrical energy to the power line carrier intelligent control power supply; The PCB board, on which the drive power module, the communication module and the main control module are all mounted; The outer casing has an internally defined accommodating space, in which the drive power module, the communication module, and the main control module are all housed.

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