CN206118115U

CN206118115U - LED controller with binary channels function

Info

Publication number: CN206118115U
Application number: CN201621060901.0U
Authority: CN
Inventors: 王宏民; 陈记华; 姚娟
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2016-09-19
Filing date: 2016-09-19
Publication date: 2017-04-19
Anticipated expiration: 2026-09-19

Abstract

The utility model relates to a LED controller with binary channels function includes: zero -cross detection module, control module, IGBT drive module, rectifier module, relay module, wherein, zero -cross detection module, with control module is connected for detect the point of zero voltage of 220v alternating current, control module according to received voltage feedback signal at zero point, determines the controller and triggers position of rest, then send drive signal drive IGBT circuit to IGBT drive module, rectifier module becomes the direct current with the rectification of 220V alternating current, and galvanic positive pole connects load LED lamp, and the negative pole connects IGBT's source electrode E end, is connected with the other end of load LED lamp through the output of IGBT's drain electrode C to constitute the return circuit, relay module is connected with control module to receive control module's control, the mode of changeable controller. Realized one kind can continuously adjustable, when be close fully loaded the time can automatic switch -over mode the LED controller.

Description

A kind of LED controller with dual pathways function

Technical field

The application is related to LED drive control field, more particularly to a kind of LED controller with dual pathways function.

Background technology

At present, LED light regulating technologies are applied in increasing occasion, and market is increasing to the demand that LED is dimmed, but LED light regulating technologies always occur such or such problem in actual applications：Although controllable silicon light modulation is to a great extent The control to LED brightness is realized, but when low gray scale, controlled silicon conducting occurs current oscillation, so as to cause Flicker；IGBT is dimmed compared with controllable silicon light modulation, is solved the problems, such as low gray scale flicker, is realized the continuously adjustabe of light.But It is that whether controllable silicon light modulation or IGBT light modulations all have that an identical is exactly that controller is switched when work Element（Controllable silicon or IGBT）Can generate heat, and caloric value can increase with the increase of bearing power, the working time is longer Generating heat the impact brought to controller switches element also can be bigger, and when work is fully loaded with for a long time, switch element is easy to burn It is bad.

The solution of the problem generated heat when work for dimmer at this stage is directly to pacify on heater element Dress radiator, this seems the problem for largely solving heating；But, when controller controls high power load Even if using radiator, when being close to fully loaded work, switch element still can produce very big heat, particularly when light is adjusted to most Particularly evident when bright, the stability of this entirety to controller constitutes very big test.

The content of the invention

The main purpose of the application is to provide a kind of LED controller with dual pathways function.

To reach above-mentioned purpose, a kind of LED controller with dual pathways function, including：

Zero passage detection module, for detecting the zero point of 220V alternating current voltages；

Control module, for the zero signal detected according to zero passage detection module, determines controller triggering original position, Then IGBT circuits are driven, so as to reach the purpose of regulating illumination intensity；

IGBT drive module, the drive signal for being sent according to controller drive IGBT；

Rectification module, the alternating current for IGBT is exported are converted into unidirectional current, powering load；

Relay module, is connected with control module, controlled module control can automatic switching controller Working mould Formula.

Also include：

Power module, key-press module and display module, wherein power module are pressed for other module for power supply to controller Key module is used for the brightness for adjusting light, and display module is used to show current brightness degree, is easy to regulation and control directly perceived.

Description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application, Schematic description and description of the present utility model is used to explain this utility model, does not constitute to of the present utility model improper Limit.In the accompanying drawings：

Fig. 1 is a kind of schematic diagram of the LED controller with dual pathways function；

Fig. 2 is the electrograph schematic diagram of relay module.

Specific embodiment

The main thought of the application is that,

To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and the specific embodiments, This utility model is described in further detail.

, by the zero point information transmission for collecting to control module, control module is according to feeding back for zero passage detection module first Information determine the triggered time, drive IGBT, by 220V AC rectifications into unidirectional current, galvanic positive pole connects negative to rectification module LED is carried, negative pole connects the source electrode E ends of IGBT, connected and composed back through drain electrode C outputs and the other end of load LED lamp of IGBT Road, relay module are used for the mode of operation of automatic switching controller, and when dimming in the range of light 0-95%, relay is operated in Control model, when light is transferred to 95%, controller automatically switches to direct mode operation（Two kinds of mode of operations of relay are fixed Justice is：Control model and direct mode operation）.

With reference to Fig. 1,

A kind of LED controller with dual pathways function mainly includes：Zero passage detection module 101, control module 102, IGBT drive module 103, rectification module 104, relay module 105.

Zero passage detection module 101, for being used to detect the zero point of 220V alternating current voltages.

Control module 102 is the core of LED controller, for the zero signal detected according to zero passage detection module, it is determined that Go out controller triggering original position, then drive IGBT circuits, so as to reach the purpose of regulating illumination intensity.

IGBT drive module 103, the drive signal for being sent according to controller drive IGBT.

Rectification module 104, the alternating current for IGBT is exported are converted into unidirectional current, powering load.

Relay module 105, is connected with control module, controlled module control can automatic switching controller work Pattern, is control model when dimming in the range of the 0-95%, direct mode operation is just automatically switched to more than 95%.

With reference to Fig. 2,

In actual test, the illumination that intensity of illumination when light modulation reaches 95% has been sufficiently close to 100% is strong Degree, so not had practical significance in the light modulation of 95%-100% scopes；But, unit is switched when 95% or the above is transferred to Part can send substantial amounts of heat, can greatly reduce the service life of controller；Therefore, using control when illumination reaches 95% Device programming Control processed automatically switches to direct mode operation, is so ensureing that avoiding long-time in the case that intensity of illumination is constant is fully loaded with Infringement of the work to controller.Wherein, control model：It is exactly that load is connected with the output of controller, is controlled by the controller, leads directly to Pattern：Exactly load and directly electrically connect with city, uncontrolled device control.

The electrograph schematic diagram of relay module is given as shown in the figure, and relay, transistor are driven using NPN transistor The grounded emitter of T1, colelctor electrode and the indirect diode D1 of 5V positive sources, the anode of D1 connect the colelctor electrode of T1, and negative electrode connects 5V positive sources, the effect of D1 is reverse afterflow, suppresses surge, D1 to select IN4007;Base stage passes through resistance R1 and control module Control end connection, wherein R1 resistances are 2K, act primarily as metering function, reduce the loss of T1；When the base stage of T1 is transfused to low electricity At ordinary times, T1 cut-offs, relay coil are failure to actuate, and the movable contact of relay is connected with normally-closed contact, a termination IGBT of movable contact Outfan, the outfan of another termination rectifier bridge, the now control of the controlled module of relay, scalable scheduling, this work Pattern is control model；When the base stage of T1 is transfused to high level, T1 saturation conductions, colelctor electrode are changed into low level, and relay is moved Make, movable contact is connected with normally opened contact, the termination 220V civil powers of normally opened contact 2, now civil power directly connects lamp, and the brightness of light is not received Control module is controlled, and this mode of operation is direct mode operation.

Claims

1. a kind of LED controller with handoff functionality, including：It is zero passage detection module, control module, IGBT drive module, whole Flow module, relay module, wherein；The zero passage detection module, for detecting the zero point of 220V alternating current voltages；The control Module is the core of LED controller, for the zero signal detected according to zero passage detection module, determines controller triggering starting Position, then drives IGBT circuits, so as to reach the purpose of regulating illumination intensity；The IGBT drive module, for according to control The drive signal that device processed sends drives IGBT；The rectification module, the alternating current for IGBT is exported are converted into unidirectional current, give Load supplying；The relay module, is connected with control module, the Working mould of the changeable controller of control of controlled module Formula, is control model when dimming in the range of the 0-95%, direct mode operation is just automatically switched to more than 95%.

2. a kind of LED controller with handoff functionality as claimed in claim 1, is characterized in that, relay module adopts NPN Transistor npn npn drives, and drive circuit is simple, is capable of achieving the reliable and stable action of relay.

3. a kind of LED controller with handoff functionality as claimed in claim 1, is characterized in that, during relay module power-off, Relay coil is failure to actuate, and the movable contact of relay is connected with normally-closed contact, the outfan of a termination IGBT of movable contact, another The outfan of termination rectifier bridge, the now control of the controlled module of relay, scalable scheduling, this mode of operation are control mould Formula；When electricity on T, the actuating of relay, movable contact are connected with normally opened contact, the termination 220V civil powers of normally opened contact 2, and now civil power is straight Lamp is connect, the uncontrolled module of brightness of light is controlled, and this mode of operation is control model.