CN201708999U

CN201708999U - Touch led controller

Info

Publication number: CN201708999U
Application number: CN2010202299956U
Authority: CN
Inventors: 吴东发
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-17
Filing date: 2010-06-17
Publication date: 2011-01-12
Anticipated expiration: 2020-06-17

Abstract

The utility model discloses a touch LED controller which comprises mains supply, a switching power supply circuit, a current-limiting rectification and voltage-stabilizing circuit, an alternating current touch chip, a touch end, a single chip microcomputer and a circuit. The touch end is connected with the alternating current touch chip by a circuit, one path of the mains supply is supplied to a load output driving circuit and the single chip microcomputer by the switching power supply circuit, and the other path thereof supplies power for the alternating current touch chip by the current-limiting rectification and voltage-stabilizing circuit, the output of the alternating current touch chip is accessed to the single chip microcomputer, and the output of the single chip microcomputer controls the load output driving circuit which is connected with an LED load. The touch LED controller can be applied to LED desk lamps, LED floor lamps, LED wall lamps and LED ceiling lamps, and can achieve the purpose of energy saving through section dimming and stepless dimming.

Description

Touch led controller

Technical field

The utility model relates to a kind of touch led controller (touch LED sectional dimming and stepless dimming, and touch the LED switch)

Background technology

By touch manner to conventional lamp such as the sectional dimming of incandescent lamp and stepless dimming technology comparative maturity, and also be widely used in daily life.Along with the intensification of people's environmental protection and energy saving consciousness is strengthened, a large amount of LED lamps has appearred in the illumination market, advantages such as the LED lamp is safe, pollution-free, high-effect because of it, high stability enjoy people to praise highly, and the trend that progressively replaces conventional incandescent is arranged, and certainly will become the main flow of following illuminating lamp.

But the technology that touch manner carries out sectional dimming and stepless dimming of passing through that is adopted on the market at present adopts controllable silicon to regulate more, but the controllable silicon regulating effect is undesirable, is easy to generate flicker.In addition, the many civil powers that directly adopt of control circuit, voltage is higher, and potential safety hazard is arranged, and the LED lamp uses low-tension supply, so and is not suitable for the LED lamp.

The utility model content

The purpose of this utility model provides a kind of touch led controller, can touch by catching or conductor that touch is connected with led controller, controls the operating state of LED.

The purpose of this utility model can realize by following technical measures: a kind of touch led controller, comprise civil power, switching power circuit, the current limliting regulator rectifier circuit, exchange touch chip, touch end, single-chip microcomputer and output driving circuit, touching end is connected with interchange touch chip circuit, civil power one tunnel is through switching power circuit supply load output driving circuit and single-chip microcomputer, another road is given through the current limliting regulator rectifier circuit and is exchanged the touch chip power supply, the output that exchanges touch chip inserts single-chip microcomputer, the output control load output driving circuit of single-chip microcomputer, the load output driving circuit connects the LED load.

The utility model also comprises photoelectrical coupler, and the output signal that exchanges touch chip offers single-chip microcomputer by photoelectrical coupler, and single-chip microcomputer is controlled the output state of LED on this basis.

Interchange touch chip described in the utility model adopts TT6061B.

The utility model can be applied to desk lamp, standard lamp, wall lamp, the pendent lamp of LED, can reach purpose of energy saving by sectional dimming and stepless dimming.

Description of drawings

Fig. 1 is a theory of constitution block diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Embodiment

As shown in Figure 1, be theory of constitution block diagram of the present utility model, comprise civil power, switching power circuit, current limliting regulator rectifier circuit, exchange touch chip, touch end, single-chip microcomputer and output driving circuit, touching end is connected with interchange touch chip circuit, civil power one tunnel is through switching power circuit supply load output driving circuit and single-chip microcomputer, another road is given through the current limliting rectifying and voltage-stabilizing and is exchanged the touch chip power supply, the output that exchanges touch chip inserts single-chip microcomputer, the output control load output driving circuit of single-chip microcomputer, the load output driving circuit connects the LED load.When human body contacted with the touch end, the interchange touch chip output pulse signal that is connected with the touch end was coupled through optocoupler and offers single-chip microcomputer, and single-chip microcomputer is controlled the output state of LED according to this for foundation.

As shown in Figure 2, be circuit theory diagrams of the present utility model, comprise civil power, Switching Power Supply 2, current limliting regulator rectifier circuit 3, exchange touch chip IC, single-chip microcomputer U6, exchange touch chip IC, touch the connecting circuit 4, output driving circuit Q2 and the load OLED that hold TOUCH and single-chip microcomputer U6.

Current limliting regulator rectifier circuit 3 comprises resistance R 2, diode D1, voltage stabilizing didoe DZ1 and electrochemical capacitor C4, capacitor C 4 is with after diode DZ1 is in parallel, the minus earth of capacitor C 4, capacitor C 4 positive poles connect the negative pole of diode D1, and the positive pole of diode D1 inserts civil power by resistance R 2.Resistance R 2 current limlitings of leading up to of civil power are connected to rectifier diode D1, voltage stabilizing didoe DZ1 and electrochemical capacitor C4 compose in parallel the voltage stabilizing network, the direct voltage that point provides about 6.8v that is connected in series of diode D1 and voltage stabilizing didoe DZ1, the 3 pin Vdd of incoming transport touch chip IC.Another road of civil power offers load OLED and the corresponding direct voltage of single-chip microcomputer U6 through switching power circuit 2.

Exchange touch chip and can adopt TT6061B (TT8486B), HM9901, HM9902 model, adopt TT6061B in the present embodiment.The peripheral circuit that exchanges touch chip IC comprises protection diode D3, D2, resistance R 23, R5, R7 and isolation safe capacitor C 3.The positive pole of diode D2, D3 meets the 4 pin TI that exchange touch chip IC simultaneously, and the negative pole of D2 meets the 3 pin VDD of IC, and the negative pole of D3 meets the 7 pin Vss of IC, to prevent that importing too high touch signal because of accident damages interchange touch chip IC.The 4 pin TI that exchange touch chip IC contact with capacitor C 3 by resistance R 5 and touch end TOUCH, and capacitor C 3 can be protected the user to contact and not be subjected to electric shock when touching end.Civil power is by the 2 pin FI of current-limiting resistance R23 incoming transport touch chip IC.Exchange the 7 pin Vss ground connection of touch chip IC.

The connecting circuit 4 that exchanges touch chip IC and single-chip microcomputer U6 comprises resistance R 4, R9, R10, capacitor C 2, C8 and photoelectrical coupler U3, the negative pole of light-emitting diode among the output pin Vdd series resistor R9 of interchange touch chip IC and the photoelectrical coupler U3, the plus earth of light-emitting diode, the both positive and negative polarity of light-emitting diode and connecting resistance R4 and capacitor C 8 are formed interference and are absorbed circuit, the collector electrode of light sensation triode connects 9 pin of single-chip microcomputer U6 among the photoelectrical coupler U3, power vd D connects 9 pin of single-chip microcomputer U6 by resistance R 10, resistance R 10 is the pull-up resistor of 9 pin of single-chip microcomputer U6, the collector electrode of light sensation triode among the photoelectrical coupler U3, emitter and connecting resistance R3 capacitor C 2 are formed interference and are absorbed circuit, the grounded emitter of light sensation triode among the photoelectrical coupler U3.

Output driving circuit is made up of resistance R 1, R20 and triode Q2, and the 10 pin PWM of single-chip microcomputer U6 are by resistance R 1 and resistance R 20 ground connection, and resistance R 1 is connected in series the base stage that a little inserts triode Q2 with R20, the grounded emitter of triode Q2, and collector electrode connects load.The pwm control signal of the load driving output port output of single-chip microcomputer U6 drives triode by resistance R 1, thus the state variation of control LED load.Above-mentioned triode Q2 also can adopt field effect transistor.

Switching power circuit in the present embodiment adopts existing switch power special chip, so do not give unnecessary details at this.

In the present embodiment, one tunnel process switching power circuit supply load and single-chip microcomputer U6 of civil power, another routing resistance R2 current limliting, diode D1 rectification obtain 6.8V through voltage stabilizing didoe DZ1 voltage stabilizing again and supply with interchange touch chip IC as working power, coupling offers single-chip microcomputer U6 through photoelectrical coupler to exchange touch chip IC output pulse signal, and single-chip microcomputer U6 controls the output state of LED according to this for foundation.

Carry out power supply electrifying for the first time, single-chip microcomputer carries out initialization, and selects the sectional dimming pattern, and the state of load is followed successively by: low bright, in bright, highlighted, close.

When contact for the first time touches end TOUCH, the 8 pin output pulse signals that exchange touch chip IC connect the negative pole of light-emitting diode among the photoelectrical coupler U3 through resistance R 9, the collector electrode output pulse signal of light sensation triode is input to 9 pin of single-chip microcomputer U6 among the photoelectrical coupler U3, single-chip microcomputer U6 adds up and judges its 10 pin output control signal of back to triode Q2, thereby control load is low bright state.

When contact for the second time touches end TOUCH, exchange the 8 pin pulse-free signals output of touch chip IC, 9 pin of single-chip microcomputer U6 are high level, and the single-chip microcomputer U6 state of determining that adds up changes, its 10 pin output control signal is given triode Q2, control load be in bright state.

When contact for the third time touches end TOUCH, the 8 pin output pulse signals that exchange touch chip IC connect the negative pole of light-emitting diode among the photoelectrical coupler U3 through resistance R 9, the collector electrode output pulse signal of light sensation triode is input to 9 pin of single-chip microcomputer U6 among the photoelectrical coupler U3, single-chip microcomputer U6 adds up and judges its 10 pin output control signal of back to triode Q2, and control load is highlighted state.

When the 4th contact touches end TOUCH, exchange the output of touch chip IC pulse-free signal, 9 pin of single-chip microcomputer U6 are high level, single-chip microcomputer adds up, the state of determining changes, output is controlled to be the state of pass, and a circulation change of the state of so far finishing the work enters the repetitive cycling state afterwards.

Claims

1. one kind touches led controller, it is characterized in that: comprise civil power, switching power circuit, current limliting regulator rectifier circuit, exchange touch chip, touch end, single-chip microcomputer and output driving circuit, touching end is connected with interchange touch chip circuit, civil power one tunnel is through switching power circuit supply load output driving circuit and single-chip microcomputer, another road is given through the current limliting regulator rectifier circuit and is exchanged the touch chip power supply, the output that exchanges touch chip inserts single-chip microcomputer, the output control load output driving circuit of single-chip microcomputer, the load output driving circuit connects the LED load.

2. touch led controller according to claim 1 is characterized in that: also comprise photoelectrical coupler, the output signal that exchanges touch chip offers single-chip microcomputer by photoelectrical coupler.

3. touch led controller according to claim 1 and 2 is characterized in that: described interchange touch chip adopts TT6061B.