CN105828481A

CN105828481A - Half-wave shunt LED lamp driving device

Info

Publication number: CN105828481A
Application number: CN201610329507.0A
Authority: CN
Inventors: 黎辉; 赵龙
Original assignee: Individual
Current assignee: Shenzhen Bitu Khandro Intelligent Technology Co Ltd
Priority date: 2016-05-17
Filing date: 2016-05-17
Publication date: 2016-08-03
Anticipated expiration: 2036-05-17
Also published as: CN105828481B; WO2017197813A1

Abstract

The invention discloses a half-wave shunting LED lamp driving device which is composed of an LED lamp driving power supply circuit and a half-wave shunt circuit connected in parallel to the input end of a power supply. The LED lamp driving power supply circuit is alternating-current input which is greater than 90-250VAC or 50-120VAC. The half-wave shunt circuit is connected in parallel to the alternating-current input end of the LED lamp driving power supply circuit. According to the invention, the wide-range input voltage characteristic of the LED lamp driving power supply circuit and the one-way shunt power supply role played by the half-wave shunt circuit connected in parallel to the input end of the driving power supply circuit in an alternating-current loop where an LED lamp is arranged are fully utilized, and single-live wire control of the LED lamp through any control device connected in series to the same alternating-current loop is realized. Single-live wire control of an LED lamp is realized conveniently through a simple, reliable and cheap half-wave shunt approach. The half-wave shunt LED lamp driving device is of very high application value in smart home and smart lighting control.

Description

A kind of half-wave shunting LED driving means

Technical field

The present invention relates to Intelligent House Light control field, specifically a kind of half-wave shunting LED is driven Dynamic device.

Background technology

LED the most quickly spreads to huge numbers of families, meanwhile, for LED etc. intelligent lighting controls product also Ordinary people man is spread to, if realizing illumination intelligence control on the premise of realizing motionless finishing quickly System, is necessary for using single live wire serial connection mounting means.At present, in electronics and the intelligence of single live wire serial connection installation Can control product, commonly used is to utilize the fine leak electric current of light fixture to provide single live wire control panel work The technology of electricity consumption, uses single live wire of this technology to control, light fixture when so-called "Off" state also It not closedown truly, but the fine energising shape that can't see light of the eye of people when minimum leakage current State.

But, if minimum " the most luminous " electric leakage of the leakage current of single live wire control panel and LED lamp When mating bad (this is common phenomenon) between stream, light arises that flicker state, and this has become as The most development obstacle that this industry is faced.

Summary of the invention

It is an object of the invention to utilize the wide-range input voltage characteristic of LED, and use the half of diode The logical principle of waveguide realizes in single loop in the way of half-wave shunting, it is achieved to LED and go here and there therewith The control equipment of connection realizes completely self-contained half-wave and powers.

Technical scheme is as follows:

A kind of half-wave shunting LED driving means, it is characterised in that include that at least one LED is driven Galvanic electricity source circuit and least one set half-wave shunt circuit；

Described LED drives power circuit to be defeated more than the exchange of 90-250VAC or 50-120VAC scope Entering, described half-wave shunt circuit is connected in parallel on described LED and drives the ac input end of power circuit.

Described half-wave shunt circuit be at least one ac circuit half-wave power shunt diode and at least one Can flow recovery protection device or circuit connected in series composition.When alternating current input is for positive half-wave, described exchange Loop half-wave power shunt diode conducting, for ac circuit provide half-wave power；When alternating current input is During negative half-wave, described ac circuit half-wave is powered shunt diode cut-off, and now, described LED drives Power circuit obtains half-wave supply input.

Described can flow recovery protection device or circuit include PTC thermistor, self-recoverage protective tube and Current foldback circuit；When the appearance in the conduction state short circuit of half-wave shunt circuit or over-current phenomenon avoidance, described Device or circuit can be protected by automatic cutoff circuit or to be in high-impedance state by flow recovery.

Beneficial effect:

The present invention takes full advantage of LED and drives the wide-range input voltage characteristic of power circuit and be connected in parallel on The half-wave shunt circuit driving power circuit input is only to the one-way distributing in alternating current loop, LED place Vertical power supply function, conveniently achieves and utilizes any control device being connected in same group of alternating current loop real Now single live wire of LED is controlled.

Meanwhile, the present invention uses and device or circuit can be protected to can ensure that when mechanical switch short circuit by flow recovery Overcurrent protection, thus realize intelligent control device and standard machinery switch compatible to LED loop Control mode.

The present invention achieves the list of LED easily by simple, reliable, cheap half-wave shunting mode Live wire controls, and has high using value in terms of Smart Home and intelligent lighting controls.

Accompanying drawing explanation

Fig. 1 is principle of the invention block diagram.

Fig. 2 is that the single live wire smart machine for LED controls embodiment schematic diagram.

Fig. 3 is that this controls embodiment schematic diagram to the mechanical switch of LED.

Label represents: LED drives power circuit 101, and half-wave shunt circuit 201, ac circuit half-wave is powered Shunt diode 202, can flow recovery protection device or circuit 203, LED 301, half-wave shunting LED driving means 001, intelligent control device 002, LED loop shunt diode 401, controlled open Close element 501, intelligent control circuit 601, mechanical switch 502.

Detailed description of the invention

See Fig. 1, a kind of half-wave shunting LED driving means, it is characterised in that include at least one LED drives power circuit 101 and least one set half-wave shunt circuit 201.

Described LED drives power circuit 101 to be the alternating current more than 90-250VAC or 50-120VAC Pressure input (or DC output power) scope, described half-wave shunt circuit 201 is connected in parallel on described LED Drive the ac input end of power supply 101 circuit.

Described half-wave shunt circuit 201 at least one ac circuit half-wave power shunt diode 202 with At least one can protect device or circuit 203 to be composed in series by flow recovery.Can flow recovery protection device or Circuit refers to protect device or can protect device circuitry by flow recovery by flow recovery.

When alternating current input is for positive half-wave, described ac circuit half-wave shunt diode 202 of powering turns on, Half-wave is provided to power for ac circuit；When alternating current input is for negative half-wave, described ac circuit half-wave supplies Electricity shunt diode 202 ends, and now, described LED drives power circuit 101 to obtain half-wave and powers Input.

Described can protect device or circuit 203 to include that PTC thermistor, self-recoverage insure by flow recovery Pipe and current foldback circuit；When half-wave shunt circuit 201 is in the conduction state, short circuit or over-current phenomenon avoidance occur Time, described can flow recovery protection device or circuit 203 by automatic cutoff circuit or be in high-impedance state.

Embodiment one: the single live wire smart machine for LED controls application.

Seeing Fig. 2, half-wave shunting LED driving means 001 is serially connected with intelligent control device 002 LED loop shunt diode 401 in 220VAC alternating current loop, in described intelligent control device 002 Connect with controllable switch element 501, more in parallel with intelligent control circuit 601 after be serially connected with ac circuit it In.LED loop shunt diode 401 and ac circuit half-wave power shunt diode 202 in the loop Closure contrary.Controllable switch element 501 is controlled to implement LED by intelligent control circuit 601 Drive the on-off control in power circuit 101 loop.

When alternating current input is for positive half-wave, described ac circuit half-wave shunt diode 202 of powering turns on, Thering is provided half-wave to power for the intelligent control device 002 in ac circuit, now, LED loop shunts two poles Pipe 401 is in cut-off state, and no matter whether the controllable switch element 501 of series connection with it opens a way, intelligence control Circuit 601 processed all can obtain half-wave and power and be in running status；When alternating current input is for negative half-wave, Described ac circuit half-wave shunt diode 202 of powering ends, now, and LED loop shunt diode 401 conductings, when controllable switch element 501 is implemented " turning on light " control by intelligent control circuit 601, then control Making described controllable switch element 501 to turn on, described LED drives power circuit 101 to obtain half-wave and powers Input, makes LED 301 open, if controllable switch element 501 is implemented by intelligent control circuit 601 " turn off the light " control time, then control described controllable switch element 501 and open a way, described LED drive power supply Circuit 101 half-wave power failure, makes LED 301 close.

Due to described LED drive power circuit 101 be wide-range input voltage, therefore, when described can Control switch element 501 is when turning on, even if being powered shunting two by described ac circuit half-wave at exchange positive half-wave In the case of pole pipe 202 by-pass shunt, LED drives power circuit 101 still can persistently export, and keeps The opening of LED 301.

Embodiment two: the mechanical switch for LED controls application.

Seeing Fig. 3, half-wave shunting LED driving means 001 is connected on same with mechanical switch 502 Loop, when described mechanical switch 502 is closure state and alternating current input is positive half-wave, ac circuit Half-wave shunt diode 202 of powering turns on, and, can flow recovery protection device or circuit 203 enter meanwhile Open circuit or high-impedance state, be equivalent to loop open circuit；And alternating current input for negative half-wave time, then ac circuit Half-wave shunt diode 202 of powering ends, and now, LED drives power circuit 101 to obtain half-wave and powers, LED 301 is made to open.

When described mechanical switch 502 is open-circuit condition, whole loop disconnects, and LED drives power circuit 101 cannot obtain power supply, make LED 301 close.

In real case ac circuit half-wave power the closure of shunt diode can be with present case phase Instead.

Above double wavelength-division streaming LED driving means of case study on implementation of the present invention is described in detail, For those skilled in the art, according to the thought of the embodiment of the present invention, in detailed description of the invention and application All will change in scope, in sum, this specification content should not be construed as the limit to the present invention System.

Claims

1. a half-wave shunting LED driving means, it is characterised in that include that at least one LED is driven Galvanic electricity source circuit and least one set half-wave shunt circuit；

Described LED drives power circuit to be that the alternating voltage more than 90-250VAC or 50-120VAC is defeated Entering scope, described half-wave shunt circuit is connected in parallel on described LED and drives the ac input end of power circuit.

A kind of half-wave shunting LED driving means the most according to claim 1, it is characterised in that Described half-wave shunt circuit be at least one ac circuit half-wave power shunt diode can be extensive with at least one Multiple over-current protection device or circuit connected in series composition；When alternating current input is for positive half-wave, described ac circuit half Ripple power shunt diode conducting, for ac circuit provide half-wave power；When alternating current input is negative half-wave Time, described ac circuit half-wave power shunt diode cut-off, now, described LED drive power supply electricity Road obtains half-wave supply input.

A kind of half-wave shunting LED driving means the most according to claim 2, it is characterised in that Described can protect device or circuit include PTC thermistor, self-recoverage protective tube and cross stream by flow recovery Protection circuit；Short circuit occurs or during over-current phenomenon avoidance when half-wave shunt circuit is in the conduction state, described can be extensive Multiple over-current protection device or circuit by automatic cutoff circuit or are in high-impedance state.