CN202496103U

CN202496103U - Light-emitting diode control system using carrier signal

Info

Publication number: CN202496103U
Application number: CN2012200150556U
Authority: CN
Inventors: 彭文琦
Original assignee: Semisilicon Technology Corp
Current assignee: Semisilicon Technology Corp
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2012-10-17
Anticipated expiration: 2022-01-13

Abstract

The utility model discloses an use carrier signal's emitting diode control system, it stores a computer control data in a data storage box to with the luminous change of a data signal control emitting diode that this data storage box exported, this system contains: a power conversion circuit for converting an AC power into a DC power for output; a control circuit for receiving the DC power supply and the data signal and modulating the data signal carrier into a modulation signal; and at least one light emitting diode light emitting circuit which is electrically connected in series with the control circuit through a transmission line and is used for receiving the direct current power supply and the modulation signal output by the control circuit so as to generate the on-off change of the lamp signal. The LED light-emitting circuit comprises an addressing unit which can be in a pin selection mode or a code burning mode.

Description

Use the led control system of carrier signal

Technical field

The utility model is relevant for a kind of led control system, particularly a kind of led control system that uses carrier signal.

Background technology

LED string light module can be divided into tandem and parallel two kinds of connected modes haply at present; And the LED string light module of this dual mode extensively is not used the person yet and is used in building outward appearance, trees, signboard and makes on the scenery, and is beautiful with the outward appearance that increases this things.

And at known in-line LED string light module; Be that the LED string light module that will organize is connected in series more; And the series connection quantity of LED string light module is to decide according to the object volume size of coiling, and after series connection, by the controller of first LED string light module the LED light lamp group of all LED string light modules controlled.

Though; The in-line connected mode of this kind makes LED string light module be easy to series connection and uses, but in use; When as long as one group of LED string light module fault is arranged; To cause control signal to transmit, and cause the LED string light module of back segment of the LED string light module of this group fault not receive any control signal, and cause the LED string light module of back segment all can't to be lighted.

In addition, be that the LED string light module of organizing and this controller are connected in parallel more at parallel LED string light module, each LED string light module will have a control line and addressed line to control.If during parallelly connected 10 groups LED string light module, this controller just must utilize 10 control lines and 10 addressed line to control 10 groups of LED string light modules.

This kind is in use parallel, when having one group of LED string light module to break down, with the control that can not have influence on other LED string light module.But the LED string light module quantity of parallel connection is got over for a long time, and control line and addressed line are many more relatively, causes the complicacy of circuit, be difficult for making, and cost is high.

No matter yet be tandem or parallel connected mode, all need use most power line or holding wire, reach the purpose that makes the LED string light module variations in light.And under former material now went up day by day by serious situation, the use that can reduce transmission line just can reduce cost widely.

The utility model content

For improving the shortcoming of above-mentioned known technology, the purpose of the utility model is to provide a kind of led control system of the simple in structure and use carrier signal that cost is low.

For reaching the above-mentioned purpose of the utility model; The utility model provides a kind of led control system that uses carrier signal; With a computer control data storing in a data storing box; And a data-signal of being exported with this data storing box control lumination of light emitting diode changes, and this system comprises: computer; A data storing box that is used for storage computation machine control data; In order to an AC power is converted to a power-switching circuit of direct current power supply output; One control circuit, it is electrically connected to this power-switching circuit, the data-signal that this control circuit is exported in order to this DC power supply of receiving this power-switching circuit and exporting and this data storing box and be a modulating signal with this data-signal carrier modulation; And at least one lumination of light emitting diode circuit; It forms electrically with a transmission line and this control circuit and is connected in series; This lumination of light emitting diode circuit is electrically connected to this control circuit, this DC power supply and this modulating signal that this this control circuit of lumination of light emitting diode circuit reception is exported and the variation that flickers that produces cresset; Wherein this lumination of light emitting diode circuit comprises an addressed location.

This control circuit comprises:

One voltage regulation unit, itself and said power-switching circuit electrically connect;

One micro-control unit, itself and said power-switching circuit electrically connect, and this micro-control unit receives the data-signal that said data storing box is exported; And

One first modulation unit, itself and said power-switching circuit, this micro-control unit and this voltage regulation unit electrically connect.

Said lumination of light emitting diode circuit more comprises:

One voltage-adjusting unit, it is electrically connected to said control circuit;

One signal acquisition unit, it is electrically connected to said voltage-adjusting unit;

One amplifying unit, it is electrically connected to this signal acquisition unit;

One demodulation unit, it is electrically connected to this amplifying unit; And

One oscillator, it is electrically connected to this voltage-adjusting unit.

Said lumination of light emitting diode circuit more comprises:

One filter unit, it is electrically connected to said demodulation unit;

One identification and logic control element, it is electrically connected to this filter unit and said addressed location;

One counting and displacement buffer unit, it is electrically connected to this identification and logic control element;

One second modulation unit, it is electrically connected to said amplifying unit, said demodulation unit and this identification and logic control element; And

One address caching unit, it is electrically connected to this identification and logic control element and said addressed location.

Said lumination of light emitting diode circuit more comprises:

One bolt-lock unit, it is electrically connected to said counting and displacement buffer unit; And

One output buffers unit, it is electrically connected to this bolt-lock unit.

Said lumination of light emitting diode circuit more comprises:

At least one constant current source, it is electrically connected to said output buffers unit.

Said lumination of light emitting diode circuit more comprises:

At least one light-emitting diode, it is electrically connected to said constant current source.

Said addressed location comprises the address setting pin position of plural number.

Said addressed location comprises an internal memory.

Said signal acquisition unit is a capacitor.

The led control system of use carrier signal of the present invention is simple in structure, can reduce the use of transmission line, reduces cost.

Description of drawings

Fig. 1 is the led control system Organization Chart of use carrier signal of the present invention;

Fig. 2 is control circuit of the present invention and LED light string device inner bay composition;

Fig. 3 is a lumination of light emitting diode inside circuit Organization Chart of the present invention;

The modulating signal sequential chart of Fig. 4 for transmitting between the lumination of light emitting diode circuit of the present invention;

Fig. 5 is the sketch map of modulating signal of the present invention (going up surface curve) and signal (following surface curve);

Fig. 6 A is the embodiment sketch map of modulation of the present invention unit;

Fig. 6 B is the embodiment sketch map of demodulation unit of the present invention;

Fig. 7 is another embodiment sketch map of the led control system of use carrier signal of the present invention.

Description of reference numerals

Computer 2

Data storing box 4

AC power 6

Power-switching circuit 8

Control circuit 10

LED light string device 14

Voltage regulation unit 102

Micro-control unit 104

The first modulation unit 106

Lumination of light emitting diode circuit 140_1～140_N (blanket) with 140

Signal acquisition unit C

Amplifying unit 142

Demodulation unit 144

Voltage-adjusting unit 146

Red light-emitting diode 148R

Green light LED 148G

Blue light-emitting diode 148B

The first constant current source 150R

The second constant current source 150G

The 3rd constant current source 150B

Output buffers unit 152

Bolt-lock unit 153

Filter unit 154

Identification and logic control element 156

Counting and displacement buffer unit 158

The second modulation unit 162

Oscillator 164

Address caching unit 166

Addressed location 168

Main control unit 10A

The first LED light string 15A

The second LED light string 15B

The first LED light string device 14A

The second LED light string device 14B.

Embodiment

Please refer to Fig. 1; It is the led control system Organization Chart of use carrier signal of the present invention, and this led control system comprises a computer 2, a data storing box 4, an AC power 6, a power-switching circuit 8, a control circuit 10 and a LED light string device 14.This computer 2 is electrically connected to this data storing box 4; This AC power 6 is electrically connected to this power-switching circuit 8; This control circuit 10 is electrically connected to this data storing box 4, this power-switching circuit 8 and this LED light string device 14.

The motion flow of system architecture diagram of the present invention is following: the user is by this computer 2; With control this LED light string device 14 a computer control data storing in this data storing box 4; And transfer to this control circuit 10 through this data storing box 4, to control this LED light string device 14 variations in light.This data storing box 4 transmits a data-signal to this control circuit 10.This control circuit 10 can be with this data-signal modulation to produce a modulating signal, in order to transmission.After this power-switching circuit 8 receives this AC power 6; Convert a direct current power supply (for example converting civil power 110 volts ac to 110 volt direct currents) to; With the identical transmission line of this modulating signal that transmits this LED light string device 14 of control, provide to drive direct voltage and give this control circuit 10 and this LED light string device 14.

Please refer to Fig. 2, it is control circuit 10 of the present invention and LED light string device 14 inner bay compositions.This control circuit 10 comprises a voltage regulation unit 102 (voltage stabilizing didoe), a micro-control unit 104 and one first modulation unit 106.This micro-control unit 104 is electrically connected to this data storing box 4, this voltage regulation unit 102, this power-switching circuit 8, this first modulation unit 106 and this LED light string device 14.

This first modulation unit 106 is electrically connected to this voltage regulation unit 102, this power-switching circuit 8, this micro-control unit 104 and this LED light string device 14.This LED light string device 14 then comprises most lumination of light emitting diode circuit 140_1～140_N (hereinafter blanket with 140).Those lumination of light emitting diode circuit 140 are electrically connected and are cascaded, and wherein the end of first lumination of light emitting diode circuit 140_1 is electrically connected to this voltage regulation unit 102, this micro-control unit 104 and this first modulation unit 106.

The action relationships of this control circuit 10 and this LED light string device 14 is described below: this power-switching circuit 8 transmits a High Level DC Voltage (for example 110 volt direct currents), and this voltage regulation unit 102 provides this micro-control unit 104 and this first modulation unit 106 to drive direct voltage.After this micro-control unit 104 receives this data-signal that transmits from this data storing box 4; Be sent to this first modulation unit 106; Carrying out carrier modulation handles to produce this modulating signal (stating after seeing for details); Afterwards via with transmit the identical transmission line of electric power, be sent to this LED light string device 14.After first this lumination of light emitting diode circuit 140_1 received the electric power and modulating signal that is transmitted from this control circuit 10, the driven for emitting lights diode changed luminous, and electric power and modulating signal are sent to next lumination of light emitting diode circuit 140_2.

Please refer to Fig. 3, it is lumination of light emitting diode circuit 140 inner bay compositions of the present invention.This lumination of light emitting diode circuit 140 comprises a signal acquisition unit C (electric capacity); One amplifying unit 142; One demodulation unit 144; One voltage-adjusting unit 146; One red light-emitting diode 148R; One green light LED 148G; One blue light-emitting diode 148B; One first constant current source 150R; One second constant current source 150G; One the 3rd constant current source 150B; One output buffers unit 152; One bolt-lock unit 153; One filter unit 154; One identification and logic control element 156; One counting and displacement buffer unit 158; One second modulation unit 162; One oscillator 164; An one address caching unit 166 and an addressed location 168.

For first lumination of light emitting diode circuit 140_1, the expression of vdd terminal point comes from the electric power and the modulating signal end points of this control circuit 10; For lumination of light emitting diode circuit 140_2 thereafter, the expression of vdd terminal point comes from electric power and the modulating signal end points of previous lumination of light emitting diode circuit 140_1, by that analogy.

For first lumination of light emitting diode circuit 140_1, the VSS end points representes to be sent to the exit point of next lumination of light emitting diode circuit 140_2; For lumination of light emitting diode circuit 140_2 thereafter; The VSS end points representes to be sent to the exit point of next lumination of light emitting diode circuit 140_3; By that analogy (promptly; For a lumination of light emitting diode circuit 140, vdd terminal point expression input endpoint, the VSS end points is represented exit point).The VCC end points representes that the input that these voltage-adjusting unit 146 outputs drive direct voltage and each aforementioned unit drives the direct voltage end points.

More detailed, this vdd terminal point is to be electrically connected to this VSS end points through this voltage-adjusting unit 146; Be electrically connected with this amplifying unit 142 through this signal acquisition unit C; Be electrically connected with this first constant current source 150R through this red light-emitting diode 148R; Be electrically connected with this second constant current source 150G through this green light LED 148G; Be electrically connected with the 3rd constant current source 150B through this blue light-emitting diode 148B.This oscillator 164 is electrically connected to this voltage-adjusting unit 146.

This filter unit 154 is to be electrically connected with this amplifying unit 142 through this demodulation unit 144.This counting is to be electrically connected with this filter unit 154 with logic control element 156 through this identification with displacement buffer unit 158; Be electrically connected with this output buffers unit 152 through this bolt-lock unit 153.This output buffers unit 152 is electrically connected with this first constant current source 150R, this second constant current source 150G, the 3rd constant current source 150B.This second modulation unit 162 is electrically connected to this VSS end points, this amplifying unit 142, this demodulation unit 144 and this identification and logic control element 156.This address caching unit 166 is electrically connected to this identification and logic control element 156; This addressed location 168 is electrically connected to this identification and logic control element 156 and this address caching unit 166.

These lumination of light emitting diode circuit 140 inside structure flow processs are narrated as follows: this signal acquisition unit C (electric capacity) has stopped that the direct voltage of this vdd terminal point gets into the unit of other processing AC signal of this amplifying unit 142 or the like, only supplies this modulating signal to pass through.The direct voltage of this vdd terminal point inputs to this voltage-adjusting unit 146 and drives the direct voltage of each unit with generation, and transmits this direct voltage to each unit with the driving direct voltage as each unit.

This voltage-adjusting unit 146 also exports the input endpoint VDD of next lumination of light emitting diode circuit 140 to via this VSS end points.After stopping that via signal acquisition unit C (electric capacity) direct current has captured AC signal from the control light-emitting diode modulating signal of this vdd terminal point; After this AC signal gets into this amplifying unit 142; Carry out the action that signal amplifies earlier, then get into this demodulation unit 144, carry out the modulation of separating of signal.

Pass through this filter unit 154 then; With the recovering signal waveform; Again after this identification and logic control element 156 pick out the data content and frequency of signal; Borrowing this data content and frequency to carry out shift motion, this data content is moved into should counting and displacement buffer unit 158, through behind a plurality of signals if receive that end signal decided at the higher level but not officially announced then will be counted and the data content of displacement buffer unit 158 is fastened through this bolt-lock unit 153 and is locked to this output buffers unit 152.

Last brightness and whether luminous this data content that shows with this red light-emitting diode 148R, this green light LED 148G and this blue light-emitting diode 148B; This second modulation unit 162 is to become modulating signal in order to carry out carrier modulation, is sent to next lumination of light emitting diode circuit 140 via end points VSS.Wherein this first constant current source 150R, this second constant current source 150G and the 3rd constant current source 150B decide electric current and receive the data content that this output buffers unit 152 is exported in order to provide.

This addressed location 168 is in order to setting the address of this lumination of light emitting diode circuit 140, comprises dual mode:

1. pin position selecting type: the drive IC of lamp group is reserved several pin position be used as the setting pin position of address (the address setting pin position that promptly comprises plural number).During fabrication, by factory set, way is simple; This kind way is applicable to the application that the lamp group is less.

2. burn a yard formula: utilization is different from the accurate or special sign indicating number in normal working voltage position or irradiate light causes change slightly to get into the burning pattern, with the burned different ID of individual other lamp group.One internal memory is involved, for example poly-fuse, laser cut, EPROM, EEPROM, Flash ROM; If code error is arranged, also can remove heavily burning by some signals or device.

Please refer to Fig. 4; It is the modulating signal sequential chart that transmits between the lumination of light emitting diode circuit 140 of the present invention; Wherein the 4th figure lower part is depicted as the modulating signal that is sent for N lumination of light emitting diode circuit 140_N, but the order that relates to color does not then receive to limit shown in the icon.As previously mentioned, then will count data content with displacement buffer unit 158 and fasten through this bolt-lock unit 153 and be locked to this output buffers unit 152 when receiving end signal decided at the higher level but not officially announced (END), with the brightness and the variations in light of control light-emitting diode.Moreover each x lumination of light emitting diode circuit 140_x all can deliver to next stage lumination of light emitting diode circuit 140_ (x+1) with modulating signal shown in Figure 4.

Referring to Fig. 5; Sketch map for modulating signal (going up surface curve) and signal (following surface curve); This signal can be used PWM (Pulse Width Modulation; Pulse width modulation) mode transmits digital signal (the icon person is 0110), can obtain modulating signal through behind the carrier modulation of high frequency.Referring to Fig. 6 A and Fig. 6 B, be respectively the embodiment sketch map of the first modulation unit 106, the second modulation unit 162 and demodulation unit 144.

Referring to Fig. 7, use another embodiment sketch map of the led control system of carrier signal for the present invention, wherein aforesaid this power-switching circuit 8 and this control circuit 10 can be integrated into a main control unit 10A.One first LED light string 15A comprises this main control unit 10A and one first LED light string device 14A; One second LED light string 15B comprises aforesaid this power-switching circuit 8 and one second LED light string device 14B.The modulating signal that this main control unit 10A is produced can be delivered to this first LED light string device 14A; And this second LED light string device 14B; And the electric power of the second LED light string device 14B is to be provided by this power-switching circuit 8, is the luminance of the more multiple optical diode of may command whereby.Suppose that the pressure drop that each lumination of light emitting diode circuit is striden is 4V, then the embodiment of Fig. 1 can control 27 lumination of light emitting diode circuit of (110/4) ≈; And the embodiment of Fig. 7 can control 54 lumination of light emitting diode circuit of (110/4) * 2 ≈.

The above is merely the preferred embodiment of the utility model, is not the protection range that is used to limit the utility model.

Claims

1. A light-emitting diode control system using a carrier signal, characterized in that the system comprises:

computer;

a data storage box for storing computer control data;

a power conversion circuit for converting an AC power into a DC power output;

A control circuit, which is electrically connected to the power conversion circuit, the control circuit receives the DC power output from the power conversion circuit and the data signal output from the data storage box and modulates the data signal carrier into a modulated signal ;and

At least one LED light-emitting circuit is electrically connected in series with the control circuit by a transmission line, the LED light-emitting circuit is electrically connected to the control circuit, and the LED light-emitting circuit receives the DC power output from the control circuit and the Modulate the signal and produce the bright and dim change of the light signal,

Wherein the light-emitting diode light-emitting circuit includes an addressing unit.

2. The LED control system using carrier signal as claimed in claim 1, wherein said control circuit comprises:

a voltage stabilizing unit, which is electrically connected to the power conversion circuit;

a micro control unit, which is electrically connected to the power conversion circuit, and the micro control unit receives the data signal output by the data storage box; and

A first modulating unit is electrically connected with the power conversion circuit, the micro control unit and the voltage stabilizing unit.

3. The light-emitting diode control system using a carrier signal as claimed in claim 2, wherein the light-emitting diode light-emitting circuit further comprises:

a voltage adjustment unit, which is electrically connected to the control circuit;

a signal acquisition unit, which is electrically connected to the voltage adjustment unit;

An amplifying unit, which is electrically connected to the signal acquisition unit;

a demodulation unit electrically connected to the amplification unit; and

An oscillator electrically connected to the voltage adjustment unit.

4. The light-emitting diode control system using a carrier signal as claimed in claim 3, wherein the light-emitting diode light-emitting circuit further comprises:

a filter unit, which is electrically connected to the demodulation unit;

an identification and logic control unit, which is electrically connected to the filter unit and the addressing unit;

a counting and displacement buffer unit, which is electrically connected to the identification and logic control unit;

a second modulation unit electrically connected to the amplification unit, the demodulation unit and the identification and logic control unit; and

An address buffer unit is electrically connected to the identification and logic control unit and the addressing unit.

5. The light-emitting diode control system using a carrier signal as claimed in claim 4, wherein the light-emitting diode light-emitting circuit further comprises:

a latch unit electrically connected to the count and shift buffer unit; and

An output buffer unit is electrically connected to the latch unit.

6. The light-emitting diode control system using a carrier signal as claimed in claim 5, wherein the light-emitting diode light-emitting circuit further comprises:

At least one constant current source is electrically connected to the output buffer unit.

7. The light-emitting diode control system using a carrier signal as claimed in claim 6, wherein the light-emitting diode light-emitting circuit further comprises:

At least one light emitting diode is electrically connected to the constant current source.

8 . The light emitting diode control system using carrier signal as claimed in claim 7 , wherein the addressing unit comprises a plurality of address setting pins.

9. The light emitting diode control system using a carrier signal as claimed in claim 7, wherein the addressing unit comprises a memory.

10 . The light emitting diode control system using a carrier signal as claimed in claim 9 , wherein the signal acquisition unit is a capacitor. 11 .