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Lamp control device and method

A control device and control method technology, applied in the direction of electrical components, etc., can solve the problems of equipment differential frequency flickering bright and dark grid imaging, affecting the service life of the drive chip, burning the chip, etc., to reduce hardware requirements, simple structure, reduce The effect of power consumption

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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantage: It is only suitable for low-power scenarios, and the service life of the driver chip will be affected if the heat dissipation is not considered, and it will even burn the chip if it is more serious!
Disadvantages: Due to the removal of filter devices such as large capacitors and inductors, when the input power supply is unstable, the low-frequency flicker caused by power ripple will cause physiological discomfort to some human eyes; in products that are more dependent on lighting, such as network cameras , the low-frequency ripple with large amplitude will also cause the device to appear bright and dark grid imaging with difference frequency flickering

Method used

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  • Lamp control device and method

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Experimental program
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Effect test

Embodiment 1

[0026] refer to figure 1 , shows a lamp control device, suitable for controlling multiple lamps, including: a drive module 1, a control unit 2, an amplification circuit 3, a relay 4 and an LED5; The current is amplified to a specified value; the relay 4 is turned on based on the amplified control signal, so that the driving module is electrically connected to the corresponding LED 5 .

[0027] Among them, the LED driver module, the normal control of each channel of light, must have a corresponding driver module. Generally, it is controlled by a PWM (pulse width modulation) signal. By changing the duty cycle, the current size of the drive output is controlled, and the brightness of the lamp bead is finally controlled.

[0028] The control unit is a small control center, which can mainly be a simple control structure such as a single-chip DSP circuit, and its purpose is to choose which lamp to light.

[0029] The amplifying circuit is the basic circuit; the relay is used for t...

Embodiment 2

[0041] On the basis of the relay, an additional switch (MOS tube) can be added. The power supply requirement of the LED is generally 12V\24V; while the high level of the control (signal) directly output by the microcontroller\DSP circuit is 1.8V or 3.3V; that is, MOS The tube will be in a normally on state and cannot realize the switch function.

[0042] Use a triode to convert the level of the enable signal output by the controller to 12V\24V (ie level conversion), and generate a level change of 0V-12V\24V, thereby enabling the on and off of the MOS tube (ie switch to switch).

[0043] Through two switches (MOS tube and relay), the safety of the circuit can be increased.

Embodiment 3

[0045] refer to image 3 , shows a lighting control method, applicable to the above lighting control device, comprising:

[0046] S1. Amplify the current of the control signal output by the control unit to a specified value;

[0047] S2. Turn on the relay based on the amplified control signal, so that the driving module is electrically connected to the corresponding LED.

[0048] The lamp control device of the embodiment of the present invention has at least the following beneficial effects: the current of the control signal is increased by the amplifying circuit, the hardware requirements of the control unit can be reduced, and the corresponding power consumption can be reduced; the electrical connection is realized by the relay, the structure is simple, and the power consumption is low; It can reduce the requirement for heat dissipation and reduce the overall complexity of the circuit.

[0049] The lighting control method according to other embodiments of the present inven...

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PUM

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Abstract

The invention discloses a lamp control device and method. The lamp control device comprises a driving module, a control unit, an amplifying circuit, a relay and an LED. The amplifying circuit amplifies the current of a control signal output by the control unit to a specified numerical value; and the relay is conducted based on the amplified control signal, so that the driving module is electrically connected with the corresponding LED. The method is suitable for corresponding device. According to the embodiment of the invention, the current of the control signal is increased through the amplifying circuit, hardware requirements of the control unit can be reduced, and corresponding power consumption is reduced; electric connection is achieved through the relay, the structure is simple, andpower consumption is low; the requirement for heat dissipation can be reduced, and the complexity of the whole circuit is reduced.

Description

technical field [0001] The present invention relates to lamp control technology, in particular to a lamp control device and method. Background technique [0002] At present, LED driver modules are generally designed with constant current, and larger capacitors and inductance devices will be selected according to the actual power consumption, and the LED driver generates serious heat, and enough PCB space needs to be reserved for thermal design, so the LED driver module will occupy A lot of space on the PCB board. The existing drive modules mainly include the following: [0003] When designing the LED driver module, it is closely arranged on the PCB layout to do low-power driving without considering heat dissipation, so as to save the PCB board space. Disadvantages: only suitable for low-power scenarios, and regardless of heat dissipation, it will affect the service life of the driver chip, and even burn out the chip! [0004] When designing the LED driver module, some bul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/325H05B45/10H05B45/50
Inventor 温新峰苏家乐梁选勤余毅鹏张海旺张杰洪林耿宇吴伟杰吴树雄陈家劭张懋林邵玉刚
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