An LED control device and LED lamp with selectable and adjustable output current.

Abstract

This utility model discloses an LED control device and LED lamp with selectable and adjustable output current. The LED control device includes a communication module, an addressing module, a control module, a power output module, a current and voltage sampling module, and a status feedback module. The communication module communicates with an external controller using the UART protocol, receives commands through the UART interface, sets the output current, range, and temperature threshold, and implements multi-device addressing management. The device can sample and feedback operating current, voltage, and temperature data in real time, and can select and adjust the output current, providing information feedback. A single LED control device can achieve multiple current outputs, offering greater applicability, safety, and reliability. This utility model achieves precise control, intelligent protection, and status monitoring of LED drivers, improving flexibility and reliability.

Description

Technical Field

[0001] This utility model relates to the field of LED lighting technology, and in particular to an LED control device and LED lighting fixture with selectable output current and adjustable current. Background Technology

[0002] Traditional LED drivers typically output a fixed current. To change the output current to suit different LED specifications or achieve different brightness levels, the entire driver unit must be replaced, or hardware (such as resistors) must be replaced. This approach is inflexible, costly, and inconvenient. Furthermore, traditional drivers lack reliable communication and status feedback mechanisms, making it impossible to monitor the LED's operating status (such as current, voltage, and temperature) in real time. They also struggle to provide precise overload and overheat protection, resulting in deficiencies in safety and intelligent management. Utility Model Content

[0003] The purpose of this invention is to provide an LED control device and LED lamp with selectable and adjustable output current, which is flexible in application scenarios, precise in control, and effectively improves the safety and reliability of LED lamps.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: A selectable and adjustable current LED control device, comprising: a communication module for data communication with an external controller via a UART interface; an addressing module connected to the communication module for setting the physical address of the device via an external resistor to achieve multi-device identification; a control module connected to the communication module and a status feedback module for compiling instructions from the UART interface and setting the output current value, adjustable current range, and maximum operating temperature threshold of the LED accordingly; a power output module connected to the control module, the power output module including a MOSFET, a power inductor, and a diode, for driving the LED load according to the instructions of the control module; a current and voltage sampling module disposed in the circuit of the power output module, integrating a temperature sensor for real-time acquisition of the LED's operating current and operating voltage; and a status feedback module connected to the control module and the current and voltage sampling module for real-time acquisition of the LED's operating current, operating voltage, and device temperature data, and feeding them back to the external controller via the UART interface through the communication module.

[0005] Furthermore, the device also includes a protection module, which is connected to the control module and the current and voltage sampling module, and is used to perform protection actions when an open circuit, short circuit or over-temperature state exceeding the maximum operating temperature threshold is detected.

[0006] Furthermore, the protection module is configured to monitor the working status in real time and perform open circuit, short circuit and over-temperature protection under the working conditions set by the control module.

[0007] Furthermore, the data fed back by the status feedback module includes, but is not limited to, real-time operating current, operating voltage, and temperature.

[0008] Furthermore, the control module can dynamically adjust the current value output to the LED within a preset current range according to UART instructions.

[0009] Furthermore, the addressing module uniquely determines the address of the device by the voltage division value of one or more external resistors.

[0010] Furthermore, the control module includes a UART compilation unit and a BACK control unit.

[0011] To solve the above-mentioned technical problems, this utility model also provides an LED lamp, including the LED control device as described in any one of the above claims and an LED light source assembly electrically connected to the LED control device.

[0012] The LED control device and LED lamp with selectable and adjustable output current provided by this utility model, compared with the prior art, realizes remote and precise setting and dynamic adjustment of current through independent communication, addressing, control and feedback modules, meeting the needs of diverse application scenarios; through the setting of status feedback module, the operating current, voltage and temperature data are fed back in real time, making the system status completely transparent and providing key data for predictive maintenance and energy management; through the setting of addressing module, a simple hardware addressing mechanism is formed, which is easy to integrate and expand; in particular, through the connection setting of protection module and control module, comprehensive open circuit, short circuit and over-temperature protection is provided to ensure the long-term stable operation of the device and LED load. Attached Figure Description

[0013] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0014] Figure 1 This is a block diagram illustrating the working principle of the LED control device in this embodiment of the present invention.

[0015] Explanation of reference numerals in the attached diagram: 1. Communication module; 2. Addressing module; 3. Control module; 4. Power output module; 5. Current and voltage sampling module; 6. Status feedback module. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0017] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0018] like Figure 1 As shown, one embodiment of this utility model relates to an LED control device with selectable output current and adjustable current, including a communication module 1 for data communication with an external controller via a UART interface; an addressing module 2 connected to the communication module 1 for setting a physical address via an external resistor to achieve multi-device identification; a control module 3 connected to the communication module 1 and a status feedback module 6 for compiling instructions from the UART interface and setting the LED output current value, adjustable current range, and maximum operating temperature threshold of the circuit accordingly; and a power output module 4 connected to the control module 3, the power output module 4 including a MOSFET, a power inductor, and a diode, for controlling the LED output current value, adjustable current range, and maximum operating temperature threshold of the circuit according to the settings of the control module 3. The command drives the LED load; the current and voltage sampling module 5 is set in the circuit of the power output module 4 to collect the LED's operating current in real time. The current and voltage sampling module 5 monitors the circuit current in real time. The current and voltage sampling module 5 integrates a voltage sampling unit and a temperature sensor. The voltage sampling unit is used to monitor the LED load voltage, and the temperature sensor monitors the temperature of key points of the device. These data are collected by the status feedback module 6 and sent to the control module 3; the status feedback module 6 is connected to the control module 3 and the current and voltage sampling module 5 to collect the LED's operating current, operating voltage and device temperature data in real time, and feeds them back to the external controller through the communication module 1 via the UART interface.

[0019] In one example, control module 3 can be implemented using an MCU, which internally includes a UART compilation unit and a BACK control unit. An external controller sends a configuration data packet containing the target address via the UART bus. When communication module 1 receives the data, it is parsed by the UART compilation unit in control module 3. The instructions contain the output current setpoint, the allowable adjustment range, and the maximum operating temperature threshold. The BACK control unit of control module 3 generates control signals based on these parameters, driving the MOSFETs in power output module 4 to operate. Through energy conversion via power inductors and diodes, a stable and adjustable current is provided to the LED load.

[0020] One embodiment involves a selectable and adjustable current LED control device. A protection module (not shown in the attached figure) is connected to the control module 3. This protection module can be a standalone module or a protection circuit built into the control module 3. The control module 3 continuously compares the collected data with set thresholds. Upon detecting short-circuit overcurrent, open-circuit zero current, or overtemperature, it immediately triggers a protection action, shutting down the MOSFET driver. Simultaneously, the control module 3 periodically packages current, voltage, and temperature status data and feeds them back to the host computer via the UART interface of the communication module 1, achieving closed-loop monitoring.

[0021] One embodiment relates to an LED control device with selectable output current and adjustable current, wherein the control module 3 is capable of dynamically adjusting the current value output to the LED within a preset current range according to UART instructions.

[0022] In one embodiment, an LED control device with selectable and adjustable output current is provided, wherein the addressing module 2 uniquely determines the address of the device by the voltage division value of one or more external resistors.

[0023] In one embodiment, as a specific application of this utility model, any of the above-mentioned LED control devices and LED light source components are integrated into the same lamp body or structure to form an LED lamp, which has intelligent control and remote management capabilities.

[0024] The LED control device and LED lamp with selectable and adjustable output current provided by this utility model realize remote and precise setting and dynamic adjustment of current through independent communication, addressing, control and feedback modules, meeting the needs of diverse application scenarios; through the setting of the status feedback module, the operating current, voltage and temperature data are fed back in real time, making the system status completely transparent and providing key data for predictive maintenance and energy management; through the setting of the addressing module, a simple hardware addressing mechanism is formed, which is easy to integrate and expand; in particular, through the connection setting of the protection module and the control module, comprehensive open circuit, short circuit and over-temperature protection are provided to ensure the long-term stable operation of the device and LED load.

[0025] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An LED control device capable of selecting an output current and adjusting the current, characterized by, include: The communication module (1) is used to communicate data with an external controller via a UART interface; Addressing module (2), connected to the communication module (1), is used to set the physical address through an external resistor to realize multi-device identification; The control module (3) is connected to the communication module (1) and the status feedback module (6) and is used to compile instructions from the UART interface and set the output current value, adjustable current range and maximum operating temperature threshold of the LED accordingly. A power output module (4) is connected to the control module (3). The power output module (4) includes a MOSFET, a power inductor, and a diode, and is used to drive the LED load according to the instructions of the control module (3). The current and voltage sampling module (5) is set in the circuit of the power output module (4) and is equipped with a temperature sensor for real-time acquisition of the LED's operating current and operating voltage. The status feedback module (6) is connected to the control module (3) and the current and voltage sampling module (5) to collect the LED's working current, working voltage and device temperature data in real time, and feed them back to the external controller through the communication module (1) via the UART interface.

2. The LED control device of claim 1, wherein, It includes a protection module, which is connected to the control module (3) and the current and voltage sampling module (5) and is used to perform protection actions when an open circuit, short circuit or over-temperature state exceeding the maximum operating temperature threshold is detected.

3. The LED control device of selectable output current and adjustable current according to claim 2, wherein, The protection module is configured to monitor the working status in real time and perform open circuit, short circuit and over-temperature protection under the working conditions set by the control module (3).

4. The LED control device with selectable output current and adjustable current according to claim 3, characterized in that, The data fed back by the status feedback module (6) includes real-time operating current, operating voltage, and temperature.

5. The LED control device with selectable output current and adjustable current according to claim 4, characterized in that, The control module (3) can dynamically adjust the current value output to the LED within a preset current range according to UART instructions.

6. The LED control device with selectable output current and adjustable current according to claim 1, characterized in that, The addressing module (2) uniquely determines the address of the device by the voltage division value of one or more external resistors.

7. The LED control device with selectable output current and adjustable current according to claim 1, characterized in that, The control module (3) includes a UART compilation unit and a BACK control unit.

8. An LED lighting fixture, characterized in that, It includes an LED light source assembly and an LED control device as described in claims 1-7.

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