TW201531152A - Controller using TRIAC dimmer to realize adjustment of LED color and brightness, control method and LED lighting device - Google Patents

Abstract

The present invention relates to a controller using TRIAC dimmer to realize adjustment of LED color and brightness, a control method and an LED lighting device. According to the control method, after the cold start of an LED device, it is determined whether the user has rotated the TRIAC dimmer and whether the TRIAC dimmer has remained still longer than a preset time period. If the TRIAC dimmer has not remained still longer than the preset time period and the TRIAC dimmer is being adjusted, a color change signal is outputted; otherwise, if the TRIAC dimmer has remained still longer than the preset time period and the TRIAC dimmer is being adjusted, a brightness change signal is outputted; thus, users can easily achieve color and brightness adjustment by simply adjusting the TRIAC dimmer.

Description

Control device, control method and LED lighting device for realizing LED color and brightness adjustment by using TRIAC dimmer

The invention relates to the control of the illumination color and brightness of an LED lamp, in particular to a method and a device which can be easily controlled by using a TRIAC dimmer.

Referring to FIG. 12, which is one of the application circuits of the conventional online dimmer 92, the online dimmer 92 is connected in series with a lamp 91 and an AC power source 93 in a loop. The online dimmer 92 mainly includes an AC thyristor fluid (TRIAC) 921, a variable resistor 922, and a bidirectional diode (DIAC) 923. The AC thyristor fluid 921 is connected in series with its two output terminals T1, T2, and its trigger terminal G is connected to the variable resistor 922 via the bidirectional diode 923. When the user adjusts the variable resistor 922, the trigger voltage on the trigger terminal G of the AC 矽 control fluid 921 can be changed, and the AC 矽 control fluid 921 is switched from the off state to the on state at different trigger angles. .

As shown in FIG. 13 , when the user adjusts the variable resistor 922 to obtain different resistance values, the turbulent control thyristor fluid 921 is turned on at different trigger angles, so that sine wave voltages with different conduction percentages are generated on the luminaire 91. Here, 90%, 70%, 50%, and 30% are exemplified. When the luminaire 91 receives a turn-on voltage of 90%, 70%, 50%, or 30%, a corresponding brightness will be generated that is proportional to the turn-on voltage, and the higher the turn-on percentage, the higher the brightness of the luminaire 91, and vice versa.

However, the above-mentioned online dimming technology is actually applied to LED lights, and has the following disadvantages:

1. When the turn-on voltage is 90%, taking the 110V AC power supply in Taiwan as an example, about 105V can be generated. At this time, the LED lamp can work normally; when the adjustment is 70% and 50%, the LED lamp can also be maintained. . However, when the turn-on voltage is adjusted to 30%, only about 30V can be generated. If this voltage is transmitted to an AC/DC converter inside the LED lamp, the AC/DC converter will stop working due to insufficient voltage. It is impossible to maintain the LED to work properly. Therefore, the adjustable brightness of the general LED lamp is about 30% to 100%, and the adjustment operation of the low brightness range of 1% to 30% is difficult to achieve.

2. The use of LED lights as lighting appliances has become a mainstream trend in the market. LEDs can not only adjust the brightness but also adjust the color; however, the above-mentioned online dimming technology cannot achieve the function of adjusting the color.

In view of the fact that the LED lamp cannot realize the color and brightness adjustment by means of the TRIAC dimmer, the main object of the present invention is to provide a control device, a control method and an LED illumination device for realizing LED color and brightness adjustment by using a TRIAC dimmer, which can achieve stability. Brightness adjustment and color switching.

In order to achieve the foregoing object, the present invention provides a control device for adjusting LED color and brightness by using a TRIAC dimmer, which is connected to an AC power source to adjust the AC power source to have a conduction ratio. The control device includes:

a rectifier circuit is connected to the TRIAC dimmer to rectify the alternating current having a set conduction ratio into a full-wave DC power supply;

A voltage detector includes an input unit and an output unit. The input unit is connected to an output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source. ;

a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power supply into an operating voltage and a load voltage, and the load voltage is used to drive an LED lamp as a load;

a plurality of current control circuits for connecting to the LED luminaire to control current flowing through the LED luminaire;

a dimming controller receives the operating voltage generated by the power conversion circuit and the continuous square wave output by the voltage detector, wherein after the dimming controller is started, determining the wave width according to the continuous square wave Whether the TRIAC dimmer is being adjusted, and determining whether the TRIAC dimmer has been stationary for more than a predetermined time. If the preset time is not exceeded, the dimming controller outputs corresponding to the adjusted amplitude of the TRIAC dimmer. a color change signal to the current control circuit; if the TRIAC dimmer is stationary for more than the preset time, the dimming controller locks the color of the current LED lamp and continuously determines whether the TRIAC dimmer is adjusted, and if so, The dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer.

The invention provides an LED lighting device for realizing LED color and brightness adjustment by using a TRIAC dimmer, wherein the TRIAC dimmer is connected to an alternating current power source to adjust the alternating current power source to have a conduction ratio, and the lighting device comprises:

a rectifier circuit is connected to the TRIAC dimmer to rectify the alternating current having a set conduction ratio into a full-wave DC power supply;

A voltage detector includes an input unit and an output unit. The input unit is connected to an output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source. ;

a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power source into an operating voltage and a load voltage;

An LED lamp comprises a plurality of LED lighting groups, each LED lighting group receiving a load voltage of the power conversion circuit output;

a plurality of current control circuits are respectively connected in series to the plurality of LED lighting groups to control current flowing through the LED lighting group;

a dimming controller receives the operating voltage generated by the power conversion circuit and the continuous square wave output by the voltage detector, wherein after the dimming controller is started, determining the wave width according to the continuous square wave Whether the TRIAC dimmer is being adjusted, and determining whether the TRIAC dimmer has been stationary for more than a predetermined time. If the preset time is not exceeded, the dimming controller outputs corresponding to the adjusted amplitude of the TRIAC dimmer. a color change signal to the current control circuit; if the TRIAC dimmer is stationary for more than the preset time, the dimming controller locks the color of the current LED lamp and continuously determines whether the TRIAC dimmer is adjusted, and if so, The dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer.

The invention provides a control method for realizing LED color and brightness adjustment by using a TRIAC dimmer, comprising:

Performing a cold start, the control device is turned off for a period of time and then restarted to reset the dimming controller;

Determining whether the TRIAC dimmer is being adjusted, wherein the dimming controller determines whether the TRIAC dimmer is being adjusted according to whether the conduction ratio of the AC power source adjusted by the TRIAC dimmer is changed;

Determining whether the TRIAC dimmer remains stationary for more than a predetermined time, wherein the dimming controller determines whether the TRIAC dimmer is in accordance with whether the conduction ratio of the AC power source adjusted by the TRIAC dimmer is stationary At rest;

The dimming controller outputs a color change signal when the TRIAC dimmer is being adjusted and has not remained stationary for more than the preset time;

The dimming controller outputs a brightness color change signal when it is determined that the TRIAC dimmer is being adjusted and has remained stationary for more than the preset time.

The invention further provides a control device for realizing LED color and brightness adjustment by using a TRIAC dimmer, wherein the TRIAC dimmer is connected to an AC power source through a switch, and the TRIAC dimmer is used to adjust the AC power source to have a The set conduction ratio, the control device comprises:

a rectifier circuit is connected to the TRIAC dimmer to rectify the alternating current having a set conduction ratio into a full-wave DC power supply;

A voltage detector includes an input unit and an output unit. The input unit is connected to an output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source. ;

a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power supply into an operating voltage and a load voltage, and the load voltage is used to drive an LED lamp as a load;

a plurality of current control circuits for connecting LED lamps to control current flowing through the LED lamps;

a dimming controller receives the operating voltage generated by the power conversion circuit and the continuous square wave output by the voltage detector, wherein after the dimming controller is started, determining whether the switch has a warm opening switching action If a warm-on switching operation outputs a color change signal to the current control circuit; the dimming controller determines whether the TRIAC dimmer is adjusted according to a change in a width of a continuous square wave output by the voltage detector; The dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer.

The invention further provides an LED lighting device for realizing LED color and brightness adjustment by using a TRIAC dimmer, wherein the TRIAC dimmer is connected to an AC power source through a switch, and the TRIAC dimmer is used to adjust the AC power source to have A set conduction ratio, the lighting device comprises:

a rectifier circuit is connected to the TRIAC dimmer to rectify the alternating current having a set conduction ratio into a full-wave DC power supply;

A voltage detector includes an input unit and an output unit. The input unit is connected to an output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source. ;

a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power source into an operating voltage and a load voltage;

An LED lamp comprises a plurality of LED lighting groups, each LED lighting group receiving a load voltage of the power conversion circuit output;

a plurality of current control circuits are respectively connected in series to the plurality of LED lighting groups to control current flowing through the LED lighting group;

a dimming controller receives the operating voltage generated by the power conversion circuit and the continuous square wave output by the voltage detector, wherein after the dimming controller is started, determining whether the switch has a warm opening switching action If there is a warm-on switching action, a color change signal is outputted to the current control circuit; if the switch exceeds the warm-on time and continues to be turned on, the dimming controller changes the width of the continuous square wave output according to the voltage detector Determining whether the TRIAC dimmer is in adjustment, if any, the dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjustment amplitude of the TRIAC dimmer.

The invention further provides a control method for realizing LED color and brightness adjustment by using a TRIAC dimmer, the control method comprising:

Performing a cold start, the control device is turned off for a period of time and then restarted to reset the dimming controller;

The dimming controller determines whether the switch has a switching action to perform warm opening, and if so, the control device outputs a color change signal;

The dimming controller determines whether the TRIAC dimmer is being adjusted, and if so, the control device outputs a brightness change signal.

Wherein, after performing the cold opening, the method may further include a step of: reading the color and brightness stored by the control device during the previous shutdown, and controlling the LED lamp to generate illumination according to the stored color and brightness.

Referring to FIG. 1 , the LED lighting device 1 of the present invention comprises a control device 10 and an LED lamp 20 . The control device 10 is connected to an AC 矽 control fluid dimmer 2 (hereinafter referred to as TRIAC dimmer 2) disposed on an AC power supply AC circuit.

The TRIAC dimmer 2 is disposed on the circuit of the AC power source AC, and the AC power source is adjusted to have a set conduction ratio. When the TRIAC dimmer 2 is turned on to the maximum extent, almost 100% of the AC power source AC (which is actually slightly affected by the component factor) is allowed to pass through and is supplied to the back-end circuit. When the TRIAC dimmer 2 is turned on 100%, the AC power supply AC passing through the TRIAC dimmer 2 is as shown in the waveform of FIG. 2(A); if the TRIAC dimmer 2 is turned on 50%, the The AC power supply AC of the TRIAC dimmer 2 is shown in the waveform of FIG. 3(A), wherein the solid line portion in the figure indicates that the TRIAC dimmer 2 is in an ON state, and the broken line portion indicates the TRIAC dimmer. 2 is the OFF state.

The control device 10 of the present invention comprises a rectifier circuit 12, a voltage detector 13, a power conversion circuit 14, a dimming controller 15, and a plurality of current control circuits 161-163.

The rectifier circuit 12 receives the AC power source AC through the TRIAC dimmer 2, rectifies the AC power source AC, and outputs the AC power source AC. The rectified waveform of the AC power source AC becomes a continuous half-wave continuous waveform, which is called a full-wave DC power supply, and the waveforms thereof can be respectively referred to the solid line portions of FIG. 2(B) and FIG. 3(B).

The voltage detector 13 includes an input unit and an output unit. The input unit is connected to the output end of the rectifier circuit 12 for detecting the full-wave DC power output from the rectifier circuit 12. If the full-wave DC power source is greater than a predetermined voltage VTH, the output portion outputs a high potential, and if the full-wave DC power source is less than the predetermined voltage VTH, the output portion outputs a low potential. Therefore, the voltage detector 13 can generate a continuous square wave according to the voltage level of the full-wave DC power source. The waveform of the continuous square wave can be referred to FIG. 2(C) and FIG. 3(C). The voltage detector 13 can be selected from the group consisting of an optocoupler, a voltage comparator, a Schmitt trigger, and the like.

The power conversion circuit 14 is connected to the output end of the rectifier circuit 12, and converts the full-wave DC power supply into an operating voltage and a load voltage, and the operating voltage is supplied to the dimming controller 15 and the voltage detector 13 for operation. This load voltage can be used to drive the LED load.

The dimming controller 15 receives the operating voltage output from the power conversion circuit 14 and the continuous square wave output from the voltage detector 13. After the dimming controller 15 starts operating, it is determined whether the TRIAC dimmer 2 is being adjusted by the user based on the change in the width of the continuous square wave output from the voltage detector 13. In principle, the present invention first adjusts the color and then sets the brightness. Generally speaking, when a single TRIAC dimmer 2 is used as the setting element, the dimming controller 15 first outputs a color change signal according to the adjustment of the TRIAC dimmer 2, When the TRIAC dimmer 2 is paused and exceeds a predetermined time (for example, 3 seconds), the current color is locked, and if the TRIAC dimmer 2 is continuously changed, the dimming controller 15 outputs a brightness change signal.

The dimming controller 15 has a built-in judging process for determining that the TRIAC dimmer 2 is currently being adjusted at that scale based on the change in the width of the continuous square wave outputted by the voltage detector 13. And because the adjustment range between the minimum scale and the maximum scale of the TRIAC dimmer 2 is predefined and divided into a plurality of sections, the plurality of sections can respectively correspond to different illumination colors and brightnesses, so the dimming controller 15 can control the color and brightness corresponding to the output according to the determined current scale. For example, the plurality of intervals can correspond to different colors of color temperature of 5500K, 4000K, 3300K, 2700K, or corresponding to become 100%, 50%, 25%. 10% of the brightness value, the judgment principle of this part will be further detailed later.

The control device 10 is configured to adjust the color and brightness of the LED lamp 20, wherein the LED lamp 20 can be in the form of a flat lamp, a downlight, a fluorescent lamp, a bulb, a projection lamp, a light bar, a wall washer, a street lamp or The patio lamp and the like are not particularly limited. In a preferred embodiment, if the LED illuminator 20 is composed of a plurality of LED illuminating groups having different color temperatures, adjusting the illuminating proportion of the different LED illuminating groups can be mixed to generate different color temperatures, thereby obtaining different The color of the light. For example, please refer to FIG. 1 , assuming that the LED lamp 20 includes a first LED lighting group 21 and a second LED lighting group 22 , the first LED lighting group is an LED with a color temperature of 5500K and a cool white light. The second LED lighting group 22 is composed of LEDs with a warm color of 2700K, and the color ratios of the two LED lighting groups 21 and 22 can be mixed to produce a color temperature as shown in the following table:

In another embodiment, the LED luminaire 20 may also be composed of a plurality of LED lighting groups having different colors, which are selected from a light emitting diode (LED) and an organic light emitting diode (OLED). ), one of the polymer light-emitting diodes (PLED). As shown in FIG. 1 , the LED lamp 20 includes a first LED lighting group 21 , a second LED lighting group 22 , and a third LED lighting group 23 , wherein the first LED lighting group 21 is The color is composed of red (R) LEDs, the second LED lighting group 22 is composed of green (G) LEDs, and the third LED lighting group 23 is composed of blue (B) LEDs. So it can be easily composed of red à orange à yellow à green à blue à à purple à white, eight basic colors.

The plurality of LED lighting groups 21~23 are connected to the output end of the power conversion circuit 14 to receive the load voltage, whereby the plurality of current control circuits 161~163 can drive and illuminate the respective LED lighting groups 21~23; The LED lighting groups 21 to 23 are respectively connected to the current control circuits 161 to 163, and the output end of the dimming controller 15 is controlled to change the color (color temperature) by controlling the magnitude and ratio of the output current of the current control circuits 161 to 163. Or color) with the purpose of changing the brightness signal.

In the circuit shown in Fig. 1, how the dimming controller 15 judges the color change and the brightness change in the present invention will be described in detail below. The AC power supply AC is exemplified by 110V. As described in the foregoing description, as the TRIAC dimmer 2 is adjusted from the minimum scale to the maximum scale, the full-wave DC power output of the rectifier circuit 12 will also change, as shown in the figure. The waveforms of (4) to (G) of 4 represent the power supply when the full-wave DC power supply accounts for 20%, 30%, 40%, 50%, 60%, 70%, and 80% of the entire cycle. Waveform.

The preset voltage VTH of the voltage detector 13 is set to a voltage value corresponding to 20% of the full-wave DC power supply. For example, since the AC power source AC is 110V, the preset voltage VTH is calculated as 110V×1.414×sin (180-180×20%)=110V×1.414×sin (144 degrees)=91.4V. The voltage detector 13 has a threshold of 91.4 V. If the full-wave DC power output from the rectifier circuit 12 exceeds 91.4 V, a high potential is output, and if it is lower than 91.4 V, a low potential is output. The square wave output from the voltage detector 13 is as shown in waveforms (a) to (g) of Fig. 4, and the wave width of the square wave is gradually increased.

The dimming controller 15 can determine that the TRIAC dimmer 2 is being adjusted (the wave width is constantly changing) or stopping according to the variation of the wave width as shown in FIGS. 4(a) to (g) (the wave width is not fixed) change).

It should be noted here that when the conduction ratio of the TRIAC dimmer 2 is too low (for example, less than 30%), the circuit may not work properly due to insufficient voltage. If the conduction ratio of the TRIAC dimmer 2 is slightly higher (for example, between 30% and 40%), the LED lamp 20 can be lighted, but it is difficult to maintain a steady state due to insufficient voltage, and flickering may occur. Therefore, in actual use, it can be designed that the conduction ratio of the TRIAC dimmer 2 is 40% or more before starting to use, and the interval below 40% is ignored, so that the LED may be avoided due to insufficient voltage.

Referring to FIG. 5, the rotation scale of the TRIAC dimmer 2 can be divided into a plurality of intervals, for example, 10% of each changeable waveguide pass ratio is an interval, so 40%~80% can be divided into 4 intervals. Similarly, if 5% is an interval, the same 40% to 80% can be divided into 8 intervals. As mentioned above, in order to avoid flickering, the adjustment from 0% to 40% is not effective. When the consumer actually uses it, as shown in FIG. 5, for example, 40%~80% is divided into 4 sections. After the TRIAC dimmer 2 is rotated, the LED lamp 20 has no effect at first, and then the lamp is bright and the color temperature is 2700K. Down 3300K, 4000K, and finally reached 5500K.

For example, when the predetermined color temperature is 5500K, 4000K, 3300, 2700K, the TRIAC dimmer 2 can be rotated to increase its scale from small to large, or from large to small, after the power is turned on, the dimming controller 15 can According to the width of the continuous square wave outputted by the voltage detector 13 corresponding to the ratio of the conduction of the TRIAC dimmer 2, the current scale of the TRIAC dimmer 2 is read in that interval, and then the corresponding color temperature is compared. Please refer to the table below:

When the TRIAC dimmer 2 stops rotating and is temporarily maintained for a preset time (for example, within 3 seconds), the dimming controller 15 locks the current adjusted color temperature, if the TRIAC dimmer 2 is subsequently adjusted. Actions will all be considered as performing a brightness adjustment job. Similarly, the plurality of sections divided according to the rotation scale of the TRIAC dimmer 2 correspond to different brightnesses, but the number of sections for controlling the brightness may be different from the number of sections for controlling the color temperature, for example, the color temperature is divided into four sections. Make adjustments, and the brightness can be changed to 8 intervals to adjust, so that you can get more detailed brightness changes, please refer to the following table:

According to the above table, it can be seen that the present invention uses the TRIAC dimmer 2 to adjust a square wave of 40 to 45% conduction ratio corresponding to 1% brightness, and the dimming controller 15 controls the current control circuits 161 to 163 to make the LED lamp 20 The brightness of 1% is generated, so that the invention can realize the setting of low brightness while still maintaining the stable point of the LED lamp 20, without occurrence of jitter and flicker, and using the electric power with the conduction ratio higher than 40%, the control device 10 can be obtained. Enough power to maintain normal work.

According to the circuit architecture of FIG. 1 , when the present invention uses only a single TRIAC dimmer 2 for color and brightness adjustment, the control method of the dimming controller 15 can be summarized into the flow of FIG. 6 , and the control method includes the following steps:

Performing cold-on (601), the control device 10 of the present invention is turned off after a period of time, and the dimming controller 15 can be reset to restart the execution of the program and clear an indication flag inside the air-conditioning light controller 15. And controlling the LED lamp 20 to first illuminate with a preset brightness, so that the user can perform subsequent color and brightness adjustment in a state where the LED lamp 20 is lit;

Determining whether the TRIAC dimmer 2 is being adjusted (602), the dimming controller 15 can determine whether the TRIAC dimmer 2 is being adjusted according to whether the square wave outputted by the voltage detector 13 has a change in the width of the wave. in;

When it is determined that the TRIAC dimmer 2 is being adjusted, it is determined whether the indication flag has been set (603), and in this step, if the user adjusts the TRIAC dimmer 2 after the cold opening, the indication The flag is empty because it is judged as "No";

Outputting a color change signal (604), when the indicator flag has not been set, the dimming controller 15 outputs a color change signal to change the color of the LED lamp 20 according to the scale change of the TRIAC dimmer 2, and return to Step (602);

When it is determined that the TRIAC dimmer 2 is stationary, it is determined whether the TRIAC dimmer 2 remains stationary for a preset time (the preset time is, for example, 3 seconds) (605), and if the preset time is not reached, the regression is performed. To step (602);

When the TRIAC dimmer 2 remains stationary for the preset time, the indication flag is set (606), and the process returns to step (602);

When it is judged that the TRIAC dimmer 2 is being adjusted and the indication flag has been set, the dimming controller 15 outputs a brightness change signal (607), and changes the brightness of the LED lamp according to the scale change of the TRIAC dimmer 2. And return to step (602).

Referring to the circuit of the second embodiment of the present invention shown in FIG. 7, a TRIAC dimmer 2 and a switch 3 are respectively responsible for adjusting the brightness and color. The switch 3 and the TRIAC dimmer 2 are connected in series on the circuit of the AC power source AC, and the appearance thereof can be referred to FIG. 8.

The invention achieves the purpose of adjusting the color by performing warm opening on the switch 3. Referring to FIG. 9(A), the cold start means that after the power interruption, after waiting for more than a first time Tcs (cs is an abbreviation of Cold Start, for example, 8 seconds), the switch 3 is turned on to supply power; Turning on as shown in FIG. 9(B) means that after the power interruption, immediately less than a second time Tws (ws means the abbreviation of WarwStart, for example, 2 seconds), the switch 3 is turned on and the power is turned on, where Tcs>Tws .

The action of warm on and cold on on the circuit will be described below with reference to FIG. The switch 3 is disposed on the circuit of the AC power source AC. When the switch 3 is turned on, the waveform of the AC power source AC is as shown in FIG. 10(A), and when the switch 3 is turned off at the time point t1, the AC power source is interrupted. The AC waveform disappears as shown by the dotted line in Fig. 10(A); the waveform of the rectification circuit 12 is as shown in Fig. 10(B), and the broken line portion of Fig. 10(B) indicates that the switch 3 is not conducting. The DC power source disappears; the voltage detector 13 has a square wave as shown in Fig. 10(C), and the broken line portion of Fig. 10(C) indicates that the square wave disappears when the switch 3 is not turned on.

When the warm start operation is implemented on the circuit, please refer to FIG. 10(D), when the AC power supply AC is normally powered, the power conversion circuit 14 can continuously output a load voltage to the LED load (for example, 24V), and another An operating voltage is applied to the dimming controller 15 (for example, 3.3V). When the switch 3 is controlled to turn off the power at the time t1, the storage capacitor 141 in the power converting circuit 14 is continuously discharged to be supplied to the dimming controller 15. The operating voltage (for example, 3.3V), but when the discharging time reaches t2, the power of the storage capacitor 141 is about to be exhausted. Therefore, if the switch 3 is turned on during the period from t1 to t2, the power supply is restored, because the dimming controller 15 continues to work during this time and does not stop, so the time t1~t2 can be regarded as execution. During the warm-on action, the period from t1 to t2 is the aforementioned second time Tws, which is determined by the capacitance of the storage capacitor 141. Further, during the period from t1 to t2, the dimming controller 15 detects that the square wave is missing by the voltage detector 13 (as shown by the broken line in FIG. 10(C)), and thus the power interruption is known, so if it is at t1 to t2 When the switch 3 is turned on during the period of time and the power supply is restored, the dimming controller 15 detects the square wave recovery through the voltage detector 13, and the dimming controller 15 determines that it is a warm-on operation and outputs a color change signal.

In addition, the cold turn-on is because the switch 3 is still not turned on after the time t2, and the power of the storage capacitor 141 is exhausted, so that the dimming controller 15 stops operating and stops. Therefore, turning on the power after Tcs exceeds will cause the dimming controller 15 to be reset and restarted.

According to the circuit architecture of FIG. 7 , when the switch 3 and the TRIAC dimmer 2 are used for color and brightness adjustment, the control method of the dimming controller 15 can be summarized into the flow of FIG. 11 , and the control method includes The following steps:

Performing cold-on (1001), the control device 10 of the present invention is turned off for a period of time and then turned back on, and the dimming controller 15 can be reset to restart the execution of the program;

Reading the color and brightness (1002) memorized during the previous shutdown, when the control device 10 is cold-opened, it will read the current color and brightness of the LED lamp 20 when the previous power is turned off, so that the user can use the previous The setting does not need to be reset, wherein each time the user controls the switch 3 to be turned off, the control device 10 automatically memorizes the current color and brightness of the LED lamp 20, and the stored color and brightness can be stored in a memory. in;

Determining whether the switch 3 has a warm start (1003), and the dimming controller 15 determines whether the user performs switching conduction on the switch 3 in the second time Tws, and if so, has a warm start;

Outputting a color change signal (1004), when it is determined that the switch 3 has performed a warm start, the dimming controller 15 outputs a color change signal, and returns to step (1003) to re-determine again, wherein the color change signal is pre-determined Set the multi-cycle cycle adjustment value, for example, the LED lamp 20 used in the cold white and warm white temperature change, can change 5500K à 4000K à 3300K à 2700K, each time the switch 3 is switched, the next adjustment value is entered; for example, R (red) G is used. (Green) B (blue) LED lamps 20, can be composed of red à orange à yellow à green à blue à à purple à white, 8 kinds of basic colors; each switch the switch 3 once, that is, enter the next adjustment value;

When it is determined that the switch 3 is not warm-started, it is further determined whether the TRIAC dimmer 2 is being adjusted (1005), and the dimming controller 15 detects whether the square wave outputted by the voltage detector 13 generates a wave width change. If there is a change, it can be determined that the TRIAC dimmer 2 is being adjusted, and when the TRIAC dimmer 2 is still stationary, returning to the step (1003);

The brightness change signal (1006) is output. When it is determined that the TRIAC dimmer 2 is being adjusted, the dimming controller 15 outputs a brightness change signal, and the brightness of the LED lamp 20 is changed according to the scale change of the TRIAC dimmer 2. And return to step (1003).

In summary, the present invention can realize the color and brightness adjustment of the LED lamp by using a single TRIAC dimmer, and the control circuit used is simple and uncomplicated, and the original wiring does not need to be replaced in practical applications. Simply adjust the TRIAC dimmer to adjust the color and brightness, and easily achieve low brightness and stable LED brightness adjustment. The invention further utilizes a switch to cooperate with a TRIAC dimmer, so that the dimming controller recovers from the square wave of the voltage detector and recovers in the Tws time, and also learns a warm wave opening, and also by the square wave width Change, know if the TRIAC dimmer is being adjusted. Finally, the color can be switched by the switch, and the brightness is adjusted by the TRIAC dimmer, which is an invention that is very convenient for adjusting the color and brightness adjustment of the LED lamp. In general, it has low manufacturing cost, simplified construction, and both. The advantages of dual control of color temperature and brightness. The system does have patent requirements such as industrial utilization, novelty and advancement, and applies for patents according to law.

1‧‧‧LED lighting device
2‧‧‧TRIAC dimmer
3‧‧‧ switch
10‧‧‧Control device
12‧‧‧Rectifier circuit
13‧‧‧Voltage detector
14‧‧‧Power conversion circuit
141‧‧‧ storage capacitor
15‧‧‧ dimming controller
161~163‧‧‧current control circuit
20‧‧‧LED lamps
21‧‧‧First LED lighting group
22‧‧‧Second LED lighting group
23‧‧‧The third LED lighting group
91‧‧‧Lighting
92‧‧‧Online dimmer
921‧‧‧AC control fluid
922‧‧‧Variable resistor
923‧‧‧Two-way diode
93‧‧‧AC power supply
AC‧‧‧AC power supply

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a circuit block diagram showing a first embodiment of the LED lighting device of the present invention. Figure 2: Corresponding voltage waveform diagram when the TRIAC dimmer of the present invention is turned on 100%. Figure 3: Correlation voltage waveform diagram when the TRIAC dimmer of the present invention is turned on 50%. 4(A) to (G) are waveform diagrams of the full-wave DC power supply with different conduction ratios according to the present invention. 4(a) to (g): square wave waveform diagrams of different wavelengths generated by the present invention corresponding to Figs. 4(A) to 4(G). Fig. 5 is a schematic view showing the scale adjustment interval of the TRIAC dimmer of the present invention corresponding to different color temperatures. Figure 6 is a flow chart showing the control method corresponding to the circuit shown in Figure 1. Figure 7 is a circuit block diagram of a second embodiment of the LED lighting device of the present invention. Figure 8 is a schematic view showing the appearance of the switch and TRIAC dimmer of the present invention. 9(A) and 9(B) are schematic timing charts of the cold and warm opening of the present invention. Fig. 10 (A) to (D) are diagrams showing the judgment waveforms of the cold and warm opening of the present invention. Figure 11 is a flow chart showing the control method corresponding to the circuit shown in Figure 7. Figure 12: Circuit diagram of a conventional online dimmer when in use. Figure 13: Voltage waveform diagram for generating different conduction angles using a conventional in-line dimmer.

1‧‧‧LED lighting device

2‧‧‧TRIAC dimmer

10‧‧‧Control device

12‧‧‧Rectifier circuit

13‧‧‧Voltage detector

14‧‧‧Power conversion circuit

141‧‧‧ storage capacitor

15‧‧‧ dimming controller

161~163‧‧‧current control circuit

20‧‧‧LED lamps

21‧‧‧First LED lighting group

22‧‧‧Second LED lighting group

23‧‧‧The third LED lighting group

Claims (19)

A control device for adjusting LED color and brightness by using a TRIAC dimmer, wherein the TRIAC dimmer is connected to an AC power source to adjust the AC power source to have a conduction ratio, and the control device comprises: a rectifier circuit connected to the TRIAC a dimmer, the alternating current having the set conduction ratio is rectified into a full-wave DC power supply; the voltage detector includes an input portion and an output portion, the input portion being connected to the output end of the rectifier circuit for detecting The full-wave DC power supply, the output unit generates a continuous square wave according to the detected full-wave DC power supply; a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power supply into a working voltage and a load Voltage, the load voltage is used to drive an LED lamp as a load; a plurality of current control circuits are connected to the LED lamp to control the current flowing through the LED lamp; a dimming controller receives the power conversion circuit to generate The continuous square wave output by the working voltage and voltage detector, wherein the dimming controller is activated according to the wavelength of the continuous square wave Determining whether the TRIAC dimmer is being adjusted, and determining whether the TRIAC dimmer has been stationary for more than a predetermined time. If the TRIAC dimmer is in adjustment and has not been stationary for more than the preset time, the dimming controller Outputting a corresponding color change signal to the current control circuit according to the adjustment amplitude of the TRIAC dimmer; if the TRIAC dimmer is stationary for more than the preset time, the dimming controller locks the current color of the LED lamp and continuously determines the Whether the TRIAC dimmer is being adjusted, if any, the dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer. The control device for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 1, wherein the dimming controller divides the adjustment range of the TRIAC dimmer into a plurality of intervals, when the TRIAC dimmer Adjusting the TRIAC dimmer to correspond to different colors when the TRIAC dimmer is not stationary; adjusting the TRIAC dimmer to enable the plurality of colors when the TRIAC dimmer has been stationary for more than the preset time The interval corresponds to different brightness. The control device for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 1, wherein the voltage detector is selected from one of an optocoupler, a voltage comparator or a Schmitt trigger circuit. . An LED lighting device for realizing LED color and brightness adjustment using a TRIAC dimmer, the TRIAC dimmer being connected to an alternating current power source for adjusting the alternating current power source to have a conduction ratio, the lighting device comprising: a rectifying circuit connecting the a TRIAC dimmer, rectifying the alternating current having a set conduction ratio into a full-wave DC power supply; a voltage detector comprising an input portion and an output portion, the input portion being connected to the output end of the rectifier circuit for inspection Knowing the full-wave DC power supply, the output unit generates a continuous square wave according to the detected full-wave DC power supply; a power conversion circuit is connected to the output end of the rectifier circuit, and converts the full-wave DC power supply into an operating voltage and a Load voltage; an LED lamp comprising a plurality of LED lighting groups, each LED lighting group receiving a load voltage of the power conversion circuit output; a plurality of current control circuits are respectively connected in series to the plurality of LED lighting groups To control the current flowing through the LED lighting group; a dimming controller receives the operating voltage and voltage detector output generated by the power conversion circuit The continuous square wave, wherein after the dimming controller is started, determining whether the TRIAC dimmer is adjusted according to the change of the wavelength of the continuous square wave, and determining whether the TRIAC dimmer has been stationary more than a preset Time, if the TRIAC dimmer is in adjustment and has not been stationary for more than the preset time, the dimming controller outputs a corresponding color change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer; if the TRIAC is adjusted The light controller is stationary for more than the preset time, and the dimming controller locks the color of the current LED lamp and continuously determines whether the TRIAC dimmer is adjusted. If so, the dimming controller is adjusted according to the adjustment of the TRIAC dimmer. A corresponding brightness change signal is output to the current control circuit. An LED lighting device for implementing LED color and brightness adjustment using a TRIAC dimmer as claimed in claim 4, wherein the plurality of LED lighting groups are selected from a light emitting diode (LED), an organic light emitting diode (OLED), and a high One of the molecular light-emitting diodes (PLEDs). An LED lighting device that implements LED color and brightness adjustment using a TRIAC dimmer as described in claim 4, the plurality of LED lighting groups comprising LED lighting groups that can produce different color temperatures of cool white and warm white. An LED lighting device that implements LED color and brightness adjustment using a TRIAC dimmer as claimed in claim 4, the plurality of LED lighting groups comprising LED lighting groups that can generate different colors of red, green, and blue. A control method for realizing LED color and brightness adjustment using a TRIAC dimmer is applied to the control device according to any one of claims 1 to 3, the control method comprising: performing cold opening, the control device is shut down After a period of time, restarting the power, resetting the dimming controller; determining whether the TRIAC dimmer is being adjusted, wherein the dimming controller continuously changes according to the conduction ratio of the AC power adjusted by the TRIAC dimmer , determining whether the TRIAC dimmer is being adjusted; determining whether the TRIAC dimmer is stationary for more than a predetermined time, wherein the dimming controller adjusts the conduction ratio of the AC power according to the TRIAC dimmer Statically, to determine whether the TRIAC dimmer is stationary; when the TRIAC dimmer is being adjusted and has not remained stationary for more than the preset time, the dimming controller outputs a color change signal; when determining the TRIAC dimming The dimming controller outputs a brightness color change signal while the device is being adjusted and has remained stationary for more than the preset time. The control method for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 8, wherein the adjustment range of the TRIAC dimmer is divided into a plurality of intervals, when the TRIAC dimmer has not been stationary for more than the preset time Adjusting the TRIAC dimmer may cause the plurality of intervals to correspond to different colors; when the TRIAC dimmer has been stationary for more than the preset time, adjusting the TRIAC dimmer may cause the plurality of intervals to correspond to different brightnesses. A control device for adjusting LED color and brightness by using a TRIAC dimmer, the TRIAC dimmer being connected to an AC power source through a switch, the TRIAC dimmer for adjusting the AC power source to have a set conduction ratio The control device comprises: a rectifier circuit connected to the TRIAC dimmer, rectifying the alternating current having a set conduction ratio into a full-wave DC power supply; and a voltage detector comprising an input portion and an output portion The input unit is connected to the output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source; a power conversion circuit is connected to the output end of the rectifier circuit, Converting the full-wave DC power to an operating voltage and a load voltage for driving an LED lamp as a load; a plurality of current control circuits for connecting the LED lamp to control current flowing through the LED lamp a dimming controller receives the operating voltage generated by the power conversion circuit and the continuous square wave output by the voltage detector, wherein the dimming After the controller is started, it is determined whether the switch has a switching action for performing warm-on, and if the warm-on switching operation outputs a color change signal to the current control circuit; the dimming controller is continuous according to the output of the voltage detector The wave width variation of the square wave determines whether the TRIAC dimmer is being adjusted, and if so, the dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjustment amplitude of the TRIAC dimmer. The control device for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 10, wherein the dimming controller divides the adjustment range of the TRIAC dimmer into a plurality of intervals, and the plurality of intervals correspond to different Brightness. The control device for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 10, wherein the color change signal is a preset multi-stage loop adjustment value, and the dimming controller is sequentially arranged with the switch The loop adjustment value is output. The control device for implementing LED color and brightness adjustment by applying a TRIAC dimmer according to claim 10, wherein the voltage detector is selected from one of an optocoupler, a voltage comparator or a Schmitt trigger circuit. . An LED lighting device that uses a TRIAC dimmer to achieve LED color and brightness adjustment. The TRIAC dimmer is connected to an AC power source through a switch, and the TRIAC dimmer is used to adjust the AC power source to have a set conduction. Proportionally, the lighting device comprises: a rectifying circuit connected to the TRIAC dimmer, rectifying the alternating current having a set conduction ratio into a full-wave direct current power supply; and a voltage detector comprising an input portion and an output The input unit is connected to the output end of the rectifier circuit to detect the full-wave DC power source, and the output unit generates a continuous square wave according to the detected full-wave DC power source; a power conversion circuit is connected to the output end of the rectifier circuit Converting the full-wave DC power supply into a working voltage and a load voltage; an LED lamp comprising a plurality of LED lighting groups, each LED lighting group receiving a load voltage of the power conversion circuit output; a plurality of current control a circuit connected in series to the plurality of LED lighting groups to control current flowing through the LED lighting group; a dimming controller receiving the power The working voltage generated by the conversion circuit and the continuous square wave outputted by the voltage detector, wherein after the dimming controller is started, it is determined whether the switch has a switching action to perform warm opening, and if there is a warm opening switching action, the output color is Changing the signal to the current control circuit; if the switch exceeds the warm-on time and continuously maintaining the conduction, the dimming controller determines whether the TRIAC dimmer is adjusted according to the change of the width of the continuous square wave output by the voltage detector. If yes, the dimming controller outputs a corresponding brightness change signal to the current control circuit according to the adjusted amplitude of the TRIAC dimmer. An LED lighting device for implementing LED color and brightness adjustment using a TRIAC dimmer as claimed in claim 14, wherein the plurality of LED lighting groups are selected from a light emitting diode (LED), an organic light emitting diode (OLED), and a high One of the molecular light-emitting diodes (PLEDs). An LED lighting device for implementing LED color and brightness adjustment using a TRIAC dimmer as claimed in claim 14, the plurality of LED lighting groups comprising LED lighting groups capable of producing different color temperatures of cool white and warm white. An LED lighting device that implements LED color and brightness adjustment using a TRIAC dimmer as described in claim 14, the plurality of LED lighting groups comprising LED lighting groups that can produce different colors of red, green, and blue. A control method for realizing LED color and brightness adjustment using a TRIAC dimmer is applied to a control device according to any one of claims 10 to 13, the control method comprising: performing cold opening, the control device is shut down for a period of time Re-booting, resetting the dimming controller; the dimming controller determines whether the switch has a warm-up switching action, and if so, the control device outputs a color change signal; the dimming controller determines the TRIAC dimmer Whether it is being adjusted, and if so, the control device outputs a brightness change signal. A control method for realizing LED color and brightness adjustment using a TRIAC dimmer is applied to a control device according to any one of claims 10 to 13, the control method comprising: performing cold opening, the control device is shut down for a period of time Re-booting, resetting the dimming controller; reading the color and brightness stored by the control device during the previous shutdown, and controlling the LED lamp to generate illumination according to the color and brightness memorized; the dimming controller determines the Whether the switch has a switching action to perform warm opening, and if so, the control device outputs a color change signal; the dimming controller determines whether the TRIAC dimmer is being adjusted, and if so, the control device outputs a brightness change signal.