CN202503696U - A dimming system for LED lamps - Google Patents

Abstract

The utility model discloses an LED lamp light regulation system which comprises an LED lamp which is electrically connected to a main circuit, a control module arranged on the LED lamp, and a traditional switch for controlling on and off of a circuit of an LED lamp connecting to the main circuit. The LED lamp comprises a drive power supply which is electrically connected to the main circuit and an LED light source which is electrically connected to the drive power supply and is driven by the drive power supply. A field effect tube is arranged between the control module and the LED lamp. A G pole of the field effect tube is electrically connected with the control module. A D pole of the field effect tube is electrically connected with the drive power supply. An S pole of the field effect tube is electrically connected with the LED light source. According to the utility model, the control module with integration of a plurality of control modes is adopted, and a light regulation function of the LED lamp is realized with the low loss field effect tube; an adjustable optical interface is provided without depending on the drive power supply of the LED lamp, and the system is suitable for most of the LED lamps; and the system has the advantages of simple structure, low cost, and high universality.

Description

A dimming system for LED lamps

technical field

The utility model relates to a dimming system for an LED lamp.

Background technique

Due to the characteristics of high efficiency, energy saving, and longevity, LED lamps have been widely used in various fields such as urban public lighting, office lighting, and indoor lighting. In order to further achieve the purpose of energy saving and emission reduction, especially in offices, schools, factories and other places, dimming has become an indispensable function of LED lamps. However, at present, LED lighting products on the market are uneven. Some have no dimming function, and some have dimming function, but they cannot be completely replaced with traditional dimming lamps. Rewiring is required, which increases costs and installation difficulties, and lacks universal However, it cannot meet the user's demand for simple, convenient and intelligent dimming of LED lamps.

Contents of the invention

The problem to be solved by the utility model is to provide an LED lamp dimming system capable of completely replacing traditional lamps with LED lamps and providing various dimming control functions.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: a dimming system for LED lamps, characterized in that it includes LED lamps electrically connected to the main circuit and a control module installed on the LED lamps, and controls the LED lamps A traditional switch connected to the main circuit for circuit on-off, the LED lamp includes a driving power source electrically connected to the main circuit and an LED light source electrically connected to the driving power source and driven by the driving power source, the control module and the LED lamp There is a field effect tube between them, the G pole of the field effect tube is electrically connected to the control module, the D pole of the field effect tube is electrically connected to the driving power supply, and the S pole of the field effect tube is electrically connected to the LED light source.

Further, the control module includes a programmable control chip with a microprocessor, a power supply module that provides power for the control chip, and a drive circuit that drives the field effect transistor, and the control module is electrically connected to the G pole of the field effect transistor through the drive circuit , the control chip is provided with an adjustment module for adjusting the duty cycle of the PWM signal output by the control module. The control module outputs a PWM signal with an adjustable duty ratio to drive the conduction time of the switch of the field effect transistor.

Further, the power supply module is electrically connected to the driving power supply; or the power supply module is electrically connected to the main circuit.

Further, the adjustment module is an infrared receiving module, and the infrared receiving module is equipped with an integrated infrared receiving head that receives the infrared modulation signal from the infrared remote control and decodes and analyzes the infrared remote control signal through software decoding. Use the key commands of the infrared remote controller to adjust the PWM signal output duty cycle of the control module.

Further, the adjustment module is a wireless module, and the wireless module is provided with a wireless radio frequency device for receiving control signals from a wireless remote controller. Use the key commands of the wireless remote controller to adjust the PWM signal output duty cycle of the control module.

Further, the adjustment module is an illuminance detection module, and the illuminance detection module is provided with an illuminance sensor that detects the current ambient illuminance and then outputs an accurate illuminance value to the control chip. The illuminance sensor is used to detect the indoor and outdoor illuminance, the illuminance value is collected by the control module, and compared with the optimal illuminance value, the brightness of the LED lamp is adjusted by changing the PWM signal output duty cycle, so that the ambient illuminance reaches the optimal value.

Further, the traditional switch is a potentiometer dimming switch, and the adjustment module is used to collect the resistance change signal of the potentiometer in the potentiometer dimming switch and convert the changed resistance value into a voltage value and then convert it into a digital signal The analog signal sampling module. Use the potentiometer dimming switch to simulate the signal to adjust the output duty cycle of the PWM signal of the control module.

Further, the traditional switch is a thyristor dimming switch, and the adjustment module is used to detect the AC phase-cutting signal passing through the thyristor dimming switch and convert the changed AC phase-cutting signal into a digital pulse width change The SCR signal detection module for the signal. A thyristor dimming switch is used to change the duty ratio of the PWM signal output of the control module.

Further, the traditional switch is a mechanical switch, and the adjustment module is a switch on-off detection module that detects the on-off signal of the mechanical switch continuous switch main circuit. The switching of the brightness level of the LED lamp is realized by using the mechanical switch to switch on and off the power supply of the LED lamp continuously.

Further, the adjustment module is a field bus interface module that enables the control chip to perform networking control. The field bus is used to realize the network control of LED lamps, and the dimming command is sent through the system host or control equipment to adjust the PWM signal output duty cycle of the control module.

After adopting the above technical solution, the utility model has the following advantages: it adopts a control module integrating multiple control methods, and cooperates with low-loss field effect tubes to realize the dimming function of LED lamps; it does not depend on whether the driving power supply of the LED lamp itself can provide Dimming interface, suitable for most LED lamps; simple structure, low cost, high versatility. In addition, it not only realizes infrared remote control, wireless remote control, illumination self-adaptation and field bus control to adjust the brightness of LED lamps, but also can completely replace traditional lamps. Without changing the wiring, the potentiometer dimming switch and silicon controlled rectifier dimming Switches and mechanical switches to realize the dimming of LED lamps.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is a schematic circuit diagram of an embodiment of the utility model;

Fig. 2 is the schematic diagram of control module;

FIG. 3 is a schematic diagram of electrically connecting the power module to the main circuit different from the embodiment shown in FIG. 1 .

Detailed ways

As shown in Figure 1, an embodiment of the utility model, an LED lamp dimming system, includes an LED lamp 1 electrically connected to the main circuit and a control module 2 provided on the LED lamp, and controls the LED lamp to be connected to the main circuit. The traditional switch 4 for on-off of the circuit in the circuit, the LED lamp includes a drive power supply 11 electrically connected to the main circuit and an LED light source 12 electrically connected to the drive power supply and driven by the drive power supply, the connection between the control module and the LED lamp A field effect tube 3 is arranged between them, the G pole of the field effect tube is electrically connected to the control module, the D pole of the field effect tube is electrically connected to the driving power supply, and the S pole of the field effect tube is electrically connected to the LED light source.

As shown in Figure 2, the control module includes a programmable control chip 20 with a microprocessor, a power supply module 21 that provides power for the control chip, and a drive circuit 22 that drives a field effect transistor. The G pole of the tube is electrically connected, and the control chip is provided with an adjustment module for adjusting the duty cycle of the PWM signal output by the control module.

The adjustment module is an infrared receiving module 23. The infrared receiving module is provided with an integrated infrared receiving head that receives the infrared modulation signal from the infrared remote control and decodes and analyzes the infrared remote control signal through software decoding. Or the adjustment module can also use the wireless module 24, and the wireless module is provided with a wireless radio frequency device for receiving control signals from a wireless remote controller. Alternatively, the adjustment module may also use an illuminance detection module 25, which is provided with an illuminance sensor that detects the current ambient illuminance and then outputs an accurate illuminance value to the control chip. Or the traditional switch is a potentiometer dimming switch, and the adjustment module is an analog signal used to collect the resistance change signal of the potentiometer in the potentiometer dimming switch and convert the changed resistance value into a voltage value and then into a digital signal Signal sampling module 26. Or the traditional switch is a thyristor dimming switch, and the adjustment module is used to detect the AC phase-cutting signal passing through the thyristor dimming switch and convert the changed AC phase-cutting signal into a digital pulse width variation signal SCR signal detection module 27 . Or the traditional switch is a mechanical switch, and the adjustment module is a switch on-off detection module 28 for detecting the on-off signal of the mechanical switch continuous switch main circuit. Alternatively, the adjustment module may also use a fieldbus interface module 29 that enables the control chip to perform networking control. Alternatively, two or more of the above-mentioned regulating modules may be selected, or even all of them may be selected, for example, all the above-mentioned regulating modules are used in this embodiment.

In addition, in this embodiment, the power supply module is electrically connected to the driving power supply. Alternatively, as shown in FIG. 3 , the power supply module may be electrically connected to the main circuit.

In addition to the above-mentioned preferred embodiment, the utility model also has other implementation modes, those skilled in the art can make various changes and deformations according to the utility model, as long as they do not depart from the spirit of the utility model, all should belong to the appended rights of the utility model The scope defined by the requirement.

Claims (10)

1. A dimming system for LED lamps, characterized in that: comprising LED lamps (1) electrically connected in the main circuit and a control module (2) arranged on the LED lamps, and a control module for connecting the LED lamps to the main circuit A traditional switch (4) for circuit on-off, the LED lamp includes a drive power supply (11) electrically connected to the main circuit and an LED light source (12) electrically connected to the drive power supply and driven by the drive power supply, the control module and A field effect tube (3) is arranged between the LED lamps, the G pole of the field effect tube is electrically connected to the control module, the D pole of the field effect tube is electrically connected to the driving power supply, and the S pole of the field effect tube is electrically connected to the LED light source . 2. A kind of LED lamp dimming system according to claim 1, is characterized in that: described control module comprises the programmable control chip (20) that has microprocessor, the power supply module (21) that provides power for control chip ) and drive the drive circuit (22) of the field effect tube, the control module is electrically connected with the G pole of the field effect tube through the drive circuit, and the control chip is provided with an adjustment module for adjusting the duty cycle of the output PWM signal of the control module. 3 . The dimming system of an LED lamp according to claim 2 , wherein the power module is electrically connected to a driving power supply; or the power module is electrically connected to a main circuit. 4 . 4. A dimming system for LED lamps according to claim 2, characterized in that: the adjustment module is an infrared receiving module (23), and the infrared receiving module is provided with an infrared modulation signal receiving from an infrared remote controller. An integrated infrared receiving head that decodes and analyzes infrared remote control signals through software decoding. 5. A dimming system for LED lamps according to claim 2, characterized in that: the adjusting module is a wireless module (24), and the wireless module is provided with a radio frequency for receiving control signals from a wireless remote controller. device. 6. A dimming system for LED lamps according to claim 2, characterized in that: the adjustment module is an illuminance detection module (25), and the illuminance detection module is equipped with a device to detect the current ambient illuminance and then output it to the control chip. Illuminance sensor for precise illuminance values. 7. A dimming system for LED lamps according to claim 2, characterized in that: the traditional switch is a potentiometer dimming switch, and the adjustment module is used to collect the resistance of the potentiometer in the potentiometer dimming switch. An analog signal sampling module (26) for converting a value change signal and converting the changed resistance value into a voltage value and then into a digital signal. 8. A dimming system for LED lamps according to claim 2, characterized in that: the conventional switch is a thyristor dimming switch, and the adjustment module is used to detect the alternating current passing through the thyristor dimming switch A thyristor signal detection module (27) for converting the phase-cutting signal and converting the changed AC phase-cutting signal into a digital pulse width changing signal. 9. A dimming system for LED lamps according to claim 2, characterized in that: the traditional switch is a mechanical switch, and the adjustment module is a switch on-off detection module that detects the on-off signal of the main circuit of the mechanical switch continuous switch (28). 10. The dimming system for LED lamps according to claim 2, characterized in that: the adjusting module is a field bus interface module (29) enabling the control chip to perform networking control.

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