A power line single lamp controller

Abstract

The utility model discloses a kind of electric power carrier single lamp controllers, comprising: shell (1), the shell (1) inside is provided with circuit board (3), power conversion circuit, electric power carrier data transmission circuit, single-chip microcontroller and luminaire control circuit are arranged on the circuit board (3);The power end of the electric power carrier data transmission circuit is connected with the second DC output end of power conversion circuit, signal coupling end is coupled with power line to receive and send carrier signal;The power end of the single-chip microcontroller is connected with the second DC output end of power conversion circuit, communication end is connected with the data interface of electric power carrier data transmission circuit;The luminaire control circuit, including relay and dimming unit, the input end of the relay is connected with the control signal output end of single-chip microcontroller, output end is connected with luminaire;The dimming unit is set between luminaire and single-chip microcontroller.The utility model supports to each tunnel luminaire for remote switch, and energy-saving effect is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of lighting control technology, and in particular to a power line carrier single lamp controller. Background Technology

[0002] Tunnel lighting systems are crucial for ensuring traffic safety, driving comfort, and energy efficiency in tunnels. Traditional tunnel lighting control schemes often employ time-based control, light-based control, or centralized control methods based on wired buses such as RS-485 and CAN. These schemes have the following shortcomings in practical applications: Complex wiring and high cost: Wired bus control systems require separate laying of communication cables, which is difficult to construct and results in high cable and maintenance costs for long-distance, harsh linear projects such as tunnels.

[0003] Limited communication distance and poor reliability: In tunnels that are several kilometers long, bus solutions such as RS-485 require a large number of repeaters, and node failures may affect the communication of the entire branch line, making it difficult to guarantee system reliability.

[0004] Difficulty adapting to complex power supply environments: Tunnel lighting typically uses EPS (Emergency Power Supply) and three-phase power supply systems, which suffer from problems such as large power fluctuations, interphase interference, and abundant harmonics. Some existing power line carrier solutions, due to improper power isolation and signal coupling processing, exhibit poor communication stability or even fail to function properly in the long-distance, high-interference three-phase power supply environment of tunnels. Utility Model Content

[0005] The purpose of this invention is to provide a power line carrier single-lamp controller to solve the problems of complex wiring, poor communication reliability, inability to achieve fine management of single lamps, and difficulty in adapting to the special power supply environment of tunnels in existing tunnel lighting control systems.

[0006] This utility model is achieved by the following technical solution: a power line carrier single lamp controller, comprising: a housing, wherein a circuit board mounting slot is provided inside the housing, a circuit board is provided on the circuit board mounting slot, and a power conversion circuit, a power line carrier data transmission circuit, a microcontroller and a lamp control circuit are provided on the circuit board; The power conversion circuit includes: an input terminal connected to an AC power source, a first DC output terminal, a second DC output terminal, and an isolated DC output terminal; The power supply terminal of the power line carrier data transmission circuit is connected to the second DC output terminal of the power conversion circuit, and the signal coupling terminal is coupled to the power line to receive and transmit carrier signals. The power supply terminal of the microcontroller is connected to the second DC output terminal of the power conversion circuit, and the communication terminal is connected to the data interface of the power line carrier data transmission circuit. The lighting control circuit includes a relay and a dimming unit. The input terminal of the relay is connected to the control signal output terminal of the microcontroller, and the output terminal is connected to the lighting fixture. The dimming unit is located between the lighting fixture and the microcontroller.

[0007] Furthermore, the power conversion circuit includes an AC-DC conversion unit, a DC-DC conversion unit, and an isolated power supply unit connected in sequence; the input terminal of the AC-DC conversion unit serves as the input terminal of the power conversion circuit, and the output terminal serves as the first DC output terminal for outputting a first DC voltage; the output terminal of the DC-DC conversion unit serves as the second DC output terminal for outputting a second DC voltage; and the output terminal of the isolated power supply unit serves as the isolated DC output terminal.

[0008] Furthermore, the carrier signal coupling unit, the filtering unit, and the power line carrier communication module are electrically connected in sequence. The carrier signal coupling unit couples the carrier signal on the power line to the filtering unit. The output of the filtering unit is connected to the receiving channel of the power line carrier communication module. The power line carrier communication module is connected to the microcontroller via a serial port.

[0009] Furthermore, the circuit board is also equipped with a power data acquisition circuit. The signal input terminal of the power data acquisition circuit is used to acquire the current and voltage signals of the controlled lamps, and the signal output terminal of the power data acquisition circuit interacts with the microcontroller through the SPI interface.

[0010] Furthermore, the power data acquisition circuit includes a current sampling unit, a voltage sampling unit, and an analog-to-digital conversion unit connected in sequence. The current sampling unit uses a current transformer and a sampling resistor to collect the current flowing through the controlled lamp. The voltage sampling unit uses a resistor divider network to collect the voltage across the controlled lamp. The output terminals of the current sampling unit and the voltage sampling unit are respectively connected to the input terminal of the analog-to-digital conversion unit, and the output terminal of the analog-to-digital conversion unit interacts with the microcontroller via an SPI interface.

[0011] Furthermore, the first DC voltage is 12V, used to provide driving power for the relay; the second DC voltage is 3.3V, used to provide operating power for the microcontroller and power line carrier data transmission circuit; the voltage of the isolated DC output terminal is selected according to the required lamp and used to provide safe isolated power for the dimming unit.

[0012] Furthermore, the housing is provided with a power input interface and a power line carrier communication interface, which are integrated into a single power line inlet. The power line inlet is connected to a power conversion circuit and a power line carrier data transmission processing circuit, respectively. A waterproof connector is provided at the power line inlet.

[0013] Furthermore, the housing is also provided with a lighting control interface, which is connected to the contacts of a relay or a dimming unit.

[0014] Furthermore, it also includes a running status indicator light connected to the microcontroller. The running status indicator light is embedded in the housing, which is a metal or flame-retardant plastic housing with an IP66 protection rating, and the housing is also provided with multiple mounting holes.

[0015] Furthermore, it also includes a Bluetooth communication circuit, which is located within the microcontroller. The microcontroller uses the Bluetooth communication circuit to wirelessly interact with external Bluetooth debugging equipment.

[0016] The beneficial effects of this utility model are as follows: This invention, by incorporating a microcontroller, a lamp control circuit, and a power data acquisition circuit, enables a single-lamp controller to independently and remotely control the switching and 0-10V / PWM dimming of each tunnel lamp. It can also collect parameters such as power, voltage, and current during lamp operation in real time, thus simultaneously possessing lamp control and operation status monitoring functions. This facilitates refined management of individual lamps and on-demand energy-saving control in tunnel lighting systems.

[0017] This invention, by setting up a power line carrier data transmission circuit and having it work in conjunction with a power conversion circuit, a microcontroller, and a lighting control circuit, can achieve communication between the controller and the gateway using existing power lines, eliminating the need for laying additional dedicated communication lines. This reduces the construction complexity and maintenance costs of the tunnel lighting system. Furthermore, tests have shown that this invention can maintain stable communication with the gateway even under three-phase power supply conditions, indicating that it has good communication stability and engineering applicability.

[0018] The power conversion circuit of this utility model provides multiple DC outputs and sets up an isolated DC output terminal to power the dimming unit, thereby improving the electrical isolation capability between the dimming circuit and the main control circuit, reducing the impact of power line noise, surge and common mode interference on the dimming signal and controller operation, and thus improving the dimming control accuracy and the overall anti-interference capability, enabling it to better adapt to the more complex power supply environment in tunnel lighting scenarios.

[0019] This invention also incorporates a Bluetooth communication circuit, allowing maintenance personnel to configure device parameters, read status, and diagnose faults near the controller via Bluetooth devices such as mobile phones without opening the controller housing or connecting additional dedicated wired debugging tools. This improves the convenience of on-site debugging and maintenance, and helps enhance maintenance efficiency and safety in dimly lit tunnels, high-altitude work environments, and other similar scenarios. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present utility model. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present utility model. Figure 3 ; Figure 4 This is the circuit control schematic diagram of this utility model; Figure 5 This is a block diagram of a power line carrier communication module. Figure 6 This is a circuit diagram for a relay control system. Figure 7 This is the control circuit diagram for the dimming unit; Figure 8 This is a circuit diagram for an isolated power supply. Figure 9 This is a circuit diagram for a microcontroller. In the diagram, 1-housing, 2-power line inlet, 3-circuit board mounting slot, 4-mounting hole, 5-lighting control interface, 6-waterproof connector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] See Figures 1 to 4A power line carrier single-lamp controller includes: a housing 1, with a circuit board mounting slot 3 inside the housing 1, a circuit board mounted on the circuit board mounting slot 3, and a power conversion circuit, a power line carrier data transmission circuit, a microcontroller, and a lamp control circuit on the circuit board; the power conversion circuit includes: an input terminal for connecting to an AC power source, a first DC output terminal, a second DC output terminal, and an isolated DC output terminal; the power supply terminal of the power line carrier data transmission circuit is connected to the second DC output terminal of the power conversion circuit, and the signal coupling terminal is coupled to a power line to receive and transmit carrier signals; the power supply terminal of the microcontroller is connected to the second DC output terminal of the power conversion circuit, and the communication terminal is connected to the data interface of the power line carrier data transmission circuit; the lamp control circuit includes a relay and a dimming unit, the input terminal of the relay is connected to the control signal output terminal of the microcontroller, and the output terminal is connected to the lamp; the dimming unit is disposed between the lamp and the microcontroller.

[0026] For specific details on the relay control circuit, please refer to [link / reference]. Figure 6 The relay directly controls the lighting of the lamps via a microcontroller. The relay selected is HF32FV-G / 12-HS (or a Hongfa relay of the same specification). The HF32FV-G is a small, high-power relay with a contact capacity of 10A / 250V AC, a coil voltage of 12V DC, and a coil power consumption of approximately 0.36W. It features small size, long contact life, and high reliability, making it suitable for on / off control of tunnel lighting fixtures. The relay's input terminal is connected to the microcontroller's control signal output terminal—the microcontroller's I / O port controls the relay coil's on / off state via a driver transistor (e.g., S8050). When the microcontroller outputs a high level, the transistor conducts, the relay coil is energized, the normally open contact closes, and the main circuit of the lamp is connected; when the microcontroller outputs a low level, the relay coil is de-energized, the contacts open, and the lamp is turned off. A freewheeling diode (e.g., 1N4148) needs to be connected in parallel across the relay coil to absorb the reverse induced electromotive force generated when the relay coil is de-energized, protecting the driver transistor. The relay's output terminal (contact terminal) is connected in series with the power supply circuit of the lamp through the lamp control interface 5 on the housing.

[0027] For the dimming unit control circuit, please refer to Figure 7 The dimming unit supports two dimming schemes for lighting fixtures: PWM direct dimming and 0-10V analog dimming, and one can be selected according to the actual interface of the connected tunnel lighting fixture. The core of the dimming unit is the PWM signal output by the microcontroller, which is sent to the corresponding dimming output interface after being optically isolated.

[0028] PWM direct dimming interface: Provides two signal lines, OC_IN and OC_OUT. The PWM signal output by the microcontroller (frequency range of 500Hz~2kHz, typical value of 1kHz) is optocoupled and then output to the PWM dimming input terminal of the lamp through the OC_OUT pin. The lamp adjusts its brightness according to the PWM duty cycle (duty cycle of 0%~100% corresponds to minimum~maximum brightness).

[0029] 0-10V Analog Dimming Interface: Provides two signal lines: DC10V_OUT and GND. If the lamp requires 0-10V dimming, a PWM to 0-10V converter chip (such as GP8101 or a similar chip) should be added after the PWM signal. The PWM signal (frequency 1kHz) output by the microcontroller is first optocoupled and isolated before being input to the GP8101. The GP8101 linearly converts it to a 0-10V analog voltage, which is then output to the lamp's 0-10V dimming interface through the DC10V_OUT pin. The output voltage is linearly related to the PWM duty cycle: 0% duty cycle corresponds to 0V (minimum brightness), and 100% corresponds to 10V (maximum brightness), with a conversion accuracy of ±1%.

[0030] Both dimming schemes incorporate optocoupler isolation (e.g., PC817) in their PWM output paths, completely isolating the digital ground on the microcontroller side from the dimming signal ground on the luminaire side. This prevents common-mode interference or surges introduced from the luminaire side from affecting the controller's main circuitry. Users can select and solder the appropriate output terminals and conversion chips based on the actual dimming interface type of the tunnel luminaire.

[0031] In this embodiment, the power conversion circuit includes an AC-DC conversion unit, a DC-DC conversion unit, and an isolated power supply unit connected in sequence. This power conversion circuit converts a 220V AC input power supply into multiple DC outputs, providing a stable and safe operating power supply for each part of the controller. The input terminal of the AC-DC conversion unit serves as the input terminal of the power conversion circuit, and its output terminal serves as the first DC output terminal, used to output a first DC voltage. The output terminal of the DC-DC conversion unit serves as the second DC output terminal, used to output a second DC voltage. The output terminal of the isolated power supply unit serves as the isolated DC output terminal.

[0032] Furthermore, the AC-DC conversion unit adopts the AD-DC function of the power line carrier unit mentioned above. This module has a built-in 220VAC-12VDC function, which is suitable for control units with low standby power consumption.

[0033] The input terminal of the AC-DC conversion unit is connected to power line inlet 2 (connected to a 220V AC power supply), and the output terminal outputs a +12V DC voltage as the first DC output terminal. This 12V voltage is mainly used to provide driving power for the relay (because the relay coil requires a 12V power supply to reliably engage), and also provides input power for the subsequent DC-DC conversion unit.

[0034] The DC-DC converter unit employs a step-down switching regulator solution, selecting the TLV76133DCYR as the DC-DC step-down chip. The TLV76133DCYR is a low-dropout linear regulator (LDO) with an input voltage range of 2.5V to 16V, a fixed output of 3.3V, and an output current capability of 1A. It uses an SOT-223-4 package and features built-in short-circuit protection and thermal shutdown, resulting in a very simple external circuit. The TLV76133DCYR's input is connected to the +12V power supply output from the AC-DC converter unit. After step-down regulation, it outputs a +3.3V DC voltage, serving as the second DC output. This 3.3V voltage provides operating power for the microcontroller, power line carrier data transmission circuit, and the energy metering chip in the power data acquisition circuit. This 3.3V output has an accuracy of ±2% and low output ripple noise, meeting the power supply requirements of digital circuits. The external circuit only requires one 10μF or larger ceramic capacitor at each of the input and output terminals to complete the design.

[0035] For the circuit diagram of the isolated power supply, please refer to Figure 8 The isolated power supply unit uses a DC-DC isolated power module. It draws power from the +12V output of the AC-DC converter and outputs a DC voltage completely isolated from the controller's digital ground via the isolated DC-DC converter module. This voltage is specifically designed to provide a safe, isolated power supply for the dimming unit in the lighting control circuit. The value of this isolated output voltage needs to be determined based on the actual operating voltage of the dimming signal interface of the connected lighting fixture. Therefore, in actual design, the voltage range and rated value of the dimming interface should first be obtained from the lighting fixture's specifications or confirmed on-site before selecting an isolated power supply module with the appropriate output voltage. The purpose of this design is that the dimming unit is directly connected to the lighting fixture's dimming signal interface, and the lighting fixture may operate in an environment with common-mode interference or surges. Using isolated power supply avoids the formation of an electrical loop between the controller's digital ground and the lighting fixture, effectively suppressing common-mode noise and surge interference on the power line side, ensuring stable and accurate dimming signals, and improving the overall electrical safety performance of the device.

[0036] In this embodiment, the power line carrier data transmission circuit includes a carrier signal coupling unit, a filtering unit, and a 3121N-H power line carrier communication module, which are connected in sequence. See also Figure 5The 3121N-H module integrates a carrier modulation and demodulation unit and a microcontroller unit (ARM Cortex-M3 processor); the carrier signal coupling unit is used to couple the carrier signal on the power line to the filtering unit, and the output of the filtering unit is connected to the receiving channel of the 3121N-H module (corresponding to the L and N pins of the module). The 3121N-H module is connected to the microcontroller through its serial port.

[0037] Furthermore, the core of the power line carrier data transmission circuit adopts the 3121N-H power line carrier communication module. This module is based on the HiSilicon Hi3921SV100 chip, integrating a high-speed / low-speed multimode power line carrier communication modem and an ARM Cortex-M3 processor. The 3121N-H supports a subset of the IEEE 1901.1 standard, with a physical layer peak rate of 0.507 Mbit / s and an application layer rate of 80 Kbps; it supports OFDM / FSK modulation, with selectable frequency bands of 0.5~3.7MHz or 2.5~5.7MHz, employing TDMA and CSMA / CA collision avoidance mechanisms, and supporting dynamic routing networking. The module has a built-in Line-Driver with configurable transmit power and a receive sensitivity of up to -98dBm. The module operates at 3.3V (3.0~3.6V, ripple <3%), with typical static power consumption ≤0.15W and dynamic operating power ≤0.5W, and connects to the motherboard via pin headers. The module communicates with an external microcontroller via serial port, eliminating the need for level conversion. The microcontroller sends data to be transmitted to the module through the serial port, and the module modulates the data and sends it to the power line through the coupling circuit; conversely, the carrier signal received by the module from the power line is demodulated and transmitted to the microcontroller through the serial port.

[0038] The carrier signal coupling unit is used to couple the carrier signal on the power line to the filtering unit, and simultaneously inject the carrier signal sent by the 3121N-H module into the power line. The coupling circuit adopts a transformer coupling scheme, with the core component being the coupling coil. Its source side is connected to the power lines L and N through a series safety capacitor, and its secondary side is connected to the module's L and N input pins through a series resistor and a parallel filtering capacitor.

[0039] The filtering unit includes a bandpass filter for the receiving channel and a filtering network for the transmitting channel. The bandpass filter for the receiving channel is integrated within the 3121N-H module. In the transmitting channel, the differential signal output by the module's built-in Line-Driver is sent to the coupling coil after passing through a series resistor and a parallel capacitor. This RC network filters out higher-order harmonics, reducing harmonic pollution to the power lines.

[0040] For the microcontroller circuit diagram, please refer to Figure 9In this embodiment, the CH584F microcontroller is selected as the main processor for the controller. The CH584F is a 32-bit microcontroller based on the RISC-V core, launched by Nanjing Qinheng. It has 448KB of built-in Flash and 128KB of SRAM, and boasts abundant peripheral resources (including multiple USARTs, I2C, SPI, GPIO, timers, PWM, etc.). It uses a QFN-32 package and operates at 3.3V. The CH584F also integrates low-power Bluetooth BLE 5.4 wireless communication, high-speed USB, LED screen controller, and other features. The microcontroller's power supply is connected to the 3.3V power output from the DC-DC converter unit. Its communication terminal is connected to the data interface of the power line carrier data transmission circuit, enabling data transmission and reception via serial port. The microcontroller's control signal output is connected to the control input of the relay and the PWM signal output of the dimming unit—the CH584F's built-in PWM module can output multiple PWM signals, suitable for LED dimming control.

[0041] In this embodiment, the microcontroller's SPI interface is also connected to the BL0942 power metering chip in the power data acquisition circuit. It reads power parameters such as voltage, current, and power via SPI communication. The signal input terminal of the power data acquisition circuit is used to acquire the current and voltage signals of the controlled lighting fixture. The signal output terminal of the power data acquisition circuit interacts with the microcontroller via the SPI interface. The power data acquisition circuit includes a current sampling unit, a voltage sampling unit, and an analog-to-digital converter (ADC) unit connected in sequence. The current sampling unit uses a current transformer and a sampling resistor to acquire the current flowing through the controlled lighting fixture. The voltage sampling unit uses a resistor divider network to acquire the voltage across the controlled lighting fixture. The output terminals of the current and voltage sampling units are respectively connected to the input terminal of the ADC unit, and the output terminal of the ADC unit interacts with the microcontroller via the SPI interface.

[0042] Furthermore, the current sampling unit is used to collect the current flowing through the controlled lighting fixture. The sampling device uses a current transformer (e.g., Nanjing Xiangshang Electronics' CT21C, with a transformation ratio of 2000:1) in conjunction with a sampling resistor (e.g., a 10Ω precision resistor). Specifically, the live wire (L-line) of the lighting fixture's power supply circuit passes through the current transformer. The transformer converts the large current into a small current signal at a ratio of 1000:1. This signal is then converted into a corresponding voltage signal (e.g., approximately 0.1V at full scale) by the sampling resistor. This voltage signal is filtered by an RC filter network (e.g., composed of a 100Ω resistor and a 0.1μF capacitor) and then sent to the current detection input channel (IP and IN pins) of the BL0942. The voltage sampling unit is used to collect the voltage across the controlled lighting fixture. A resistor divider network scheme is used. Taking 220V AC voltage as an example, a precision resistor network is used to construct a voltage divider, attenuating the 220V voltage or higher to a suitable AD sampling level. This voltage signal is then filtered and sent to the voltage detection input channel (VP pin) of the BL0942.

[0043] The analog-to-digital conversion unit uses the BL0942 energy metering chip. The BL0942, launched by Shanghai Belling, is a calibration-free energy metering chip with a built-in clock, manufactured using CMOS technology and primarily used in single-phase applications. It can measure parameters such as current, RMS voltage, active power, and active energy, and can output fast RMS current values ​​(for overcurrent protection) and waveform data. It features high accuracy, calibration-free operation, low power consumption, and high reliability. The BL0942 operates at 3.3V and has a built-in approximately 4MHz oscillation circuit (no external crystal oscillator required). The BL0942 transmits the acquired energy parameters, including RMS voltage, RMS current, active power, and active energy pulse count, to the microcontroller in real time via an SPI interface. After receiving this data, the microcontroller can be used for real-time monitoring of the lamp's operating status (e.g., determining whether the lamp is working properly or overloaded), and for lamp life management (e.g., calculating the cumulative operating time of the lamp, monitoring the power decay trend, and issuing an early warning signal when the power decay exceeds the threshold). It can also report the power data to the gateway monitoring system through the power line carrier data transmission circuit.

[0044] In this embodiment, the first DC voltage is 12V, which is used to provide driving power for the relay; the second DC voltage is 3.3V, which is used to provide operating power for the microcontroller and the power line carrier data transmission circuit; and the voltage of the isolated DC output terminal is 3.3V, which is used to provide safe isolated power for the dimming unit.

[0045] In this embodiment, the housing 1 is provided with a power input interface and a power line carrier communication interface, which are integrated into a single power line inlet 2. The power wires are connected to the power conversion circuit and the power line carrier data transmission processing circuit respectively through the power line inlet 2, and a waterproof connector 6 is also provided at the power line inlet 2. Furthermore, the housing 1 is also provided with a lighting control interface 5, which is connected to the contacts of a relay or a dimming unit. The lighting control interface 5 is connected to the controlled lighting fixtures inside the tunnel via a waterproof cable, transmitting the lighting power supply circuit and dimming control signals.

[0046] In this embodiment, a running status indicator light connected to the microcontroller is also included. The running status indicator lights are all embedded in the housing 1, which is an IP66-rated metal or flame-retardant plastic housing suitable for harsh environments such as humidity, dust, and corrosive gases inside tunnels. The housing 1 also has multiple mounting holes 4. The running status indicator lights embedded in the housing 1 are connected to the microcontroller's I / O ports. The running status indicator lights use red LEDs and flash periodically during normal operation, indicating that the controller is working properly.

[0047] This embodiment also includes Bluetooth communication, a function supported by the microcontroller itself. The microcontroller is a CH584F, capable of handling both main control processing and Bluetooth communication simultaneously. The microcontroller wirelessly interacts with external Bluetooth debugging devices (such as mobile phones or handheld debugging terminals) via its integrated Bluetooth communication circuit. Debugging personnel can perform device ID configuration, parameter reading, status diagnosis, firmware upgrades, and other operations near the controller (with only a power line connection) without opening the controller housing or using dedicated wired debugging tools, significantly improving debugging efficiency and safety in dimly lit tunnel environments and high-altitude work scenarios. The CH584F also supports OTA (Over-The-Air) firmware upgrades via Bluetooth.

[0048] It should be noted that the terms "connection" and "setting" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "connection" or "setting" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "connection" and "setting," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in a sequence other than those illustrated or described herein. Moreover, for the foregoing embodiments, for the sake of simplicity, they are all described as a series of actions; however, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Secondly, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to this application.

[0049] The above embodiments describe the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Modifications and variations made by those skilled in the art without departing from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A power line carrier single-lamp controller, characterized in that, include: The housing (1) has a circuit board mounting slot (3) inside, and a circuit board is provided on the circuit board mounting slot (3). The circuit board is provided with a power conversion circuit, a power line carrier data transmission circuit, a microcontroller and a lamp control circuit. The power conversion circuit includes: an input terminal connected to an AC power source, a first DC output terminal, a second DC output terminal, and an isolated DC output terminal; The power supply terminal of the power line carrier data transmission circuit is connected to the second DC output terminal of the power conversion circuit, and the signal coupling terminal is coupled to the power line to receive and transmit carrier signals. The power supply terminal of the microcontroller is connected to the second DC output terminal of the power conversion circuit, and the communication terminal is connected to the data interface of the power line carrier data transmission circuit. The lighting control circuit includes a relay and a dimming unit. The input terminal of the relay is connected to the control signal output terminal of the microcontroller, and the output terminal is connected to the lighting fixture. The dimming unit is located between the lighting fixture and the microcontroller.

2. A power line carrier single-lamp controller as described in claim 1, characterized in that, The power conversion circuit includes an AC-DC conversion unit, a DC-DC conversion unit, and an isolated power supply unit connected in sequence. The input terminal of the AC-DC conversion unit serves as the input terminal of the power conversion circuit, and the output terminal serves as the first DC output terminal for outputting a first DC voltage. The output terminal of the DC-DC conversion unit serves as the second DC output terminal for outputting a second DC voltage. The output terminal of the isolated power supply unit serves as the isolated DC output terminal.

3. A power line carrier single-lamp controller as described in claim 1, characterized in that, The power line carrier data transmission circuit includes a carrier signal coupling unit, a filtering unit, and a power line carrier communication module connected in sequence. The carrier signal coupling unit couples the carrier signal on the power line to the filtering unit. The output of the filtering unit is connected to the receiving channel of the power line carrier communication module. The power line carrier communication module is connected to a microcontroller via a serial port.

4. A power line carrier single-lamp controller as described in claim 1, characterized in that, The circuit board is also equipped with a power data acquisition circuit. The signal input terminal of the power data acquisition circuit is used to acquire the current and voltage signals of the controlled lamps. The signal output terminal of the power data acquisition circuit interacts with the microcontroller through the SPI interface.

5. A power line carrier single-lamp controller as described in claim 4, characterized in that, The power data acquisition circuit includes a current sampling unit, a voltage sampling unit, and an analog-to-digital converter (ADC) unit connected in sequence. The current sampling unit uses a current transformer and a sampling resistor to collect the current flowing through the controlled lamp. The voltage sampling unit uses a resistor divider network to collect the voltage across the controlled lamp. The outputs of the current sampling unit and the voltage sampling unit are respectively connected to the input of the ADC unit, and the output of the ADC unit interacts with the microcontroller via an SPI interface.

6. A power line carrier single-lamp controller as described in claim 2, characterized in that, The first DC voltage is 12V, used to provide driving power for the relay; the second DC voltage is 3.3V, used to provide operating power for the microcontroller and power line carrier data transmission circuit; the voltage of the isolated DC output terminal is modified according to the needs of the lamp, used to provide safe isolated power for the dimming unit.

7. A power line carrier single-lamp controller as described in any one of claims 1 to 6, characterized in that, The housing (1) is provided with a power input interface and a power line carrier communication interface. The power input interface and the power line carrier communication interface are integrated into the same power line inlet (2). The power wire is connected to the power conversion circuit and the power line carrier data transmission processing circuit through the power line inlet (2). A waterproof connector (6) is provided at the power line inlet (2).

8. A power line carrier single-lamp controller as described in claim 7, characterized in that, The housing (1) is also provided with a lamp control interface (5), which is connected to the contacts of a relay or a dimming unit.

9. A power line carrier single-lamp controller as described in claim 1, characterized in that, It also includes a running status indicator light connected to the microcontroller. The running status indicator light is embedded in the housing (1). The housing (1) is a metal or flame-retardant plastic housing with an IP66 protection rating, and the housing (1) is also provided with multiple mounting holes (4).

10. A power line carrier single-lamp controller as described in claim 1, characterized in that, It also includes a Bluetooth communication circuit, which is located within the microcontroller. The microcontroller uses the Bluetooth communication circuit to wirelessly interact with external Bluetooth debugging equipment.

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