A multi-functional high-power light source controller

Abstract

The utility model relates to the technical field of light source controller especially is related to a kind of multifunctional high-power light source controller, it includes main control IC, 24V power module, voltage reducing module, drive module, 48V power module, the voltage reducing module is powered by 24V power module, the main control IC is powered by voltage reducing module, the drive module is powered by 48V power module, the voltage reducing module with the drive module electrically connected, the drive module electrically connected in light source, the main control IC electrically connected in the drive module, the main control IC output PWM signal to the drive module, the drive module drives light source.The utility model has the effect of improving light source controller output power.

Description

Technical Field

[0001] This utility model relates to the technical field of light source controllers, and in particular to a multifunctional high-power light source controller. Background Technology

[0002] A light source is an object or device that produces visible light or other electromagnetic radiation (such as infrared and ultraviolet rays). Light sources are widely used in science, technology, industry, and daily life. Light source controllers have been applied to various fields of light source control. The main function of the controller is to control the brightness and illumination status (on / off) of the light source. With the rapid development of intelligent cameras, light source controllers, as auxiliary products for machine vision, are also constantly being updated and upgraded.

[0003] Currently, some application scenarios require the use of high-power light sources to obtain better illumination. However, current light source controllers do not output enough power at 48V, resulting in low light source power and limiting the application scenarios. Utility Model Content

[0004] In order to improve the output power of the light source controller, this utility model provides a multifunctional high-power light source controller to address the problems of the prior art.

[0005] This utility model provides a multifunctional high-power light source controller, which adopts the following technical solution:

[0006] A multifunctional high-power light source controller, characterized in that it includes a main control IC, a 24V power supply module, a step-down module, a drive module, and a 48V power supply module. The step-down module is powered by the 24V power supply module, the main control IC is powered by the step-down module, and the drive module is powered by the 48V power supply module. The step-down module is electrically connected to the drive module, the drive module is electrically connected to the light source, and the main control IC is electrically connected to the drive module. The main control IC outputs a PWM signal to the drive module, and the drive module drives the light source.

[0007] Furthermore, the driving module includes a signal conversion circuit, a first-stage amplifier circuit, a second-stage negative feedback amplifier circuit, and a MOSFET driving circuit. The signal conversion circuit includes a current-limiting resistor R29, a filter resistor R64, and a filter capacitor C21. One end of the current-limiting resistor R29 is connected to one end of the filter resistor R64, and the other end of the filter resistor R64 is grounded. The two ends of the filter capacitor C21 are connected to the two ends of the filter resistor R64. The PWM signal is converted into an analog signal by the signal conversion circuit.

[0008] The first-stage amplifier circuit includes a first-stage operational amplifier. An analog signal is sent to the non-inverting input of the first-stage operational amplifier. The positive terminal of the first-stage operational amplifier is connected to the buck module, and the negative terminal of the first-stage operational amplifier is grounded. The output terminal of the first-stage operational amplifier is connected to the inverting input. A resistor R67 is connected between the output terminal and the inverting input of the first-stage operational amplifier. A capacitor C22 is connected across the two ends of the resistor R67. The output terminal of the first-stage operational amplifier outputs a first-stage amplified signal.

[0009] The two-stage negative feedback amplifier circuit includes a two-stage operational amplifier. The first-stage amplified signal is sent to the non-inverting input of the second-stage operational amplifier. The output terminal of the second-stage operational amplifier is connected to the inverting input. A variable resistor PR2 is connected between the output terminal and the inverting input of the second-stage operational amplifier. A capacitor C24 is connected across the two ends of the variable resistor PR2. The output terminal of the second-stage operational amplifier outputs the second-stage amplified signal.

[0010] The MOS driving circuit includes multiple MOS transistors. The secondary amplified signal is sent to the gate of the MOS transistor. The 48V power supply module is electrically connected to the source of the MOS transistor. The drain of the MOS transistor is connected to one end of multiple light sources, and the other end of the light sources is grounded.

[0011] Furthermore, the step-down module is connected to a button module, a digital tube display module, and a serial communication module. The button module, digital tube display module, and serial communication module are all powered by the step-down module. The button module and digital tube display module are electrically connected to the serial communication module, and the serial communication module is electrically connected to the main control IC.

[0012] Furthermore, the light source is provided with a heat sink, and the heat sink is provided with a temperature monitoring module. The temperature monitoring module includes an NTC thermistor, which is powered by a step-down module. The NTC thermistor is electrically connected to the main control IC, and a trigger module is electrically connected between the main control IC and the drive module.

[0013] In summary, this utility model includes at least one of the following beneficial technical effects of a multifunctional high-power light source controller:

[0014] The main control IC sends a PWM signal with a precise duty cycle, which is converted into an analog voltage signal by the drive module and then sent to the gate of the MOSFET by a two-stage negative feedback amplifier circuit. The drive module is directly powered by a 48V power supply module, which can directly drive a 48V high-power light source and output higher power. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the control logic of this utility model.

[0016] Figure 2 This is a schematic diagram of the signal conversion circuit of this utility model.

[0017] Figure 3 This is a schematic diagram of the first-stage amplifier circuit in this utility model.

[0018] Figure 4 This is a schematic diagram of the two-stage negative feedback amplifier circuit in this utility model.

[0019] Figure 5 This is a circuit diagram of the temperature module in this utility model.

[0020] Figure 6 This is a schematic diagram of the MOSFET driving circuit in this utility model.

[0021] In the diagram: 1. Main control IC; 2. Driver module; 3. Temperature monitoring module; 4. Digital tube display module; 5. Trigger module; 6. Button module; 7. Serial communication module; 8. 24V power supply module; 9. Buck module; 10. 48V power supply module; Resistors (R59, R64, R67, R82); Capacitors (C21, C22, C24); U8A, First-stage operational amplifier; U8B, Second-stage operational amplifier; MOSFETs (Q12, Q13, Q14, Q15) Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] This utility model discloses a multifunctional high-power light source controller, such as... Figure 1-6As shown, the system includes a main control IC, a 24V power supply module, a step-down module, a driver module, and a 48V power supply module. The step-down module is powered by the 24V power supply module. The main control IC is electrically connected to the step-down module and powered by it. A commercially available step-down converter can be used. The step-down module reduces the voltage output from the 24V power supply module to match the operating voltage of the main control IC. The driver module is powered by the 48V power supply module. The step-down module is electrically connected to the driver module, which is in turn electrically connected to the light source. The main control IC is electrically connected to the driver module. The main control IC outputs a PWM signal with a precise duty cycle to the driver module, which then drives the light source.

[0025] Meanwhile, the drive module includes a signal conversion circuit, a first-stage amplifier circuit, a second-stage negative feedback amplifier circuit, and a MOSFET drive circuit. The signal conversion circuit includes a current-limiting resistor R29, a filter resistor R64, and a filter capacitor C21. One end of the current-limiting resistor R29 is connected to one end of the filter resistor R64, and the other end of the filter resistor R64 is grounded. The two ends of the filter capacitor C21 are connected to the two ends of the filter resistor R64. After the PWM signal is input to the signal conversion circuit, it is converted into an analog signal and output. The first-stage amplifier circuit includes an operational amplifier U8A. The analog signal is sent to the non-inverting input of the operational amplifier. The positive terminal of the operational amplifier is connected to the buck converter, and the negative terminal is grounded. The output terminal of the operational amplifier is connected to the inverting input, and a resistor R67 is connected between the output terminal and the inverting input. A capacitor C22 is connected across the two ends of the resistor R67. After the analog signal passes through the operational amplifier, the output terminal of the operational amplifier outputs the amplified signal. Simultaneously, the second-stage negative feedback amplifier circuit includes an operational amplifier U8B. The amplified signal from the first stage is sent to the non-inverting input of the operational amplifier. The output terminal of the operational amplifier is connected to the inverting input, and a variable resistor PR2 is connected between the output terminal and the inverting input. A capacitor C24 is connected to both ends of the variable resistor PR2. A resistor R82 is connected to the end of capacitor C24 closest to the inverting input of the second-stage operational amplifier. The end of resistor R82 furthest from capacitor C24 is grounded. After the first-stage amplified signal is input to the second-stage operational amplifier, the output of the second-stage operational amplifier outputs the second-stage amplified signal. The MOSFET driver circuit includes multiple MOSFETs Q12, Q13, Q14, and Q15. The second-stage amplified signal is sent to the gate of the MOSFET. The 48V power supply module is electrically connected to the source of the MOSFET. The drain of the MOSFET is connected to one end of multiple light sources, and the other end of the light sources is grounded. When the second-stage amplified signal is input to the MOSFET, the MOSFET is turned on, causing the 48V power supply module to supply power to the light sources, enabling the light sources to work. The output power of each channel can reach 1 kilowatt.

[0026] In addition, the step-down module is connected to a button module, a digital tube display module, and a serial communication module. The button module, digital tube display module, and serial communication module are all powered by the step-down module. The button module, digital tube display module, and serial communication module are existing technologies. The button module and digital tube display module are electrically connected to the serial communication module, which is electrically connected to the main control IC. When the light source needs to work, people press the button module, which transmits the signal to the serial communication module. Then, the serial communication module transmits the signal to the main control IC, which then sends a PWM signal. In addition, a heat sink is installed on the light source, and a temperature monitoring module is installed on the heat sink. The temperature monitoring module includes an NTC thermistor, which is powered by a step-down module and electrically connected to the main control IC. A trigger module is electrically connected between the main control IC and the drive module. The NTC thermistor can monitor the temperature of the heat sink in real time and transmit the signal to the main control IC. When the temperature of the heat sink is too high, the main control IC analyzes the data. If the temperature exceeds the set temperature threshold, it shuts off the signal output and disconnects the current to protect the components and the light source from damage.

[0027] The implementation principle of a multifunctional high-power light source controller according to this utility model embodiment is as follows: the main control IC sends a PWM signal with a precise duty cycle, which is converted into an analog voltage signal by the drive module, and then sent to the gate of the MOS transistor by a two-stage negative feedback amplifier circuit. The drive module is directly powered by a 48V power supply module, which can directly drive a 48V high-power light source with higher output power.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A multifunctional high-power light source controller, characterized in that: The system includes a main control IC, a 24V power supply module, a step-down module, a driver module, and a 48V power supply module. The step-down module is powered by the 24V power supply module, the main control IC is powered by the step-down module, and the driver module is powered by the 48V power supply module. The step-down module is electrically connected to the driver module, the driver module is electrically connected to the light source, and the main control IC is electrically connected to the driver module. The main control IC outputs a PWM signal to the driver module, and the driver module drives the light source.

2. The multifunctional high-power light source controller according to claim 1, characterized in that: The drive module includes a signal conversion circuit, a first-stage amplifier circuit, a second-stage negative feedback amplifier circuit, and a MOSFET drive circuit. The signal conversion circuit includes a current-limiting resistor R29, a filter resistor R64, and a filter capacitor C21. One end of the current-limiting resistor R29 is connected to one end of the filter resistor R64, and the other end of the filter resistor R64 is grounded. The two ends of the filter capacitor C21 are connected to the two ends of the filter resistor R64. The PWM signal is converted into an analog signal by the signal conversion circuit. The first-stage amplifier circuit includes a first-stage operational amplifier. An analog signal is sent to the non-inverting input of the first-stage operational amplifier. The positive terminal of the first-stage operational amplifier is connected to the buck module, and the negative terminal of the first-stage operational amplifier is grounded. The output terminal of the first-stage operational amplifier is connected to the inverting input. A resistor R67 is connected between the output terminal and the inverting input of the first-stage operational amplifier. A capacitor C22 is connected across the two ends of the resistor R67. The output terminal of the first-stage operational amplifier outputs a first-stage amplified signal. The two-stage negative feedback amplifier circuit includes a two-stage operational amplifier. The first-stage amplified signal is sent to the non-inverting input of the second-stage operational amplifier. The output of the second-stage operational amplifier is connected to the inverting input. A variable resistor PR2 is connected between the output of the second-stage operational amplifier and the inverting input. A capacitor C24 is connected across the two ends of the variable resistor PR2. A resistor R82 is connected to the end of the capacitor C24 closest to the inverting input of the second-stage operational amplifier. The end of the resistor R82 furthest from the capacitor C24 is grounded. The output of the second-stage operational amplifier outputs the second-stage amplified signal. The MOS driving circuit includes multiple MOS transistors. The secondary amplified signal is sent to the gate of the MOS transistor. The 48V power supply module is electrically connected to the source of the MOS transistor. The drain of the MOS transistor is connected to one end of multiple light sources, and the other end of the light sources is grounded.

3. The multifunctional high-power light source controller according to claim 1, characterized in that: The step-down module is connected to a button module, a digital tube display module, and a serial communication module. The button module, digital tube display module, and serial communication module are all powered by the step-down module. The button module and digital tube display module are electrically connected to the serial communication module, and the serial communication module is electrically connected to the main control IC.

4. A multifunctional high-power light source controller according to claim 1, characterized in that: The light source is provided with a heat sink, and the heat sink is provided with a temperature monitoring module. The temperature monitoring module includes an NTC thermistor, which is powered by a step-down module. The NTC thermistor is electrically connected to the main control IC, and a trigger module is electrically connected between the main control IC and the drive module.

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