TW201813446A - Lighting device and light-color control method thereof characterized in that the lighting mode is controlled on the basis of whether the conduction phase angle outputted by the external dimmer switch is greater than or less than a predetermined conduction phase angle - Google Patents

Abstract

A light-color control method of a lighting device comprising the following steps: first, turning on an external dimmer switch that determines whether to obtain an external power from a commercial power. The external dimmer switch can adjust a conduction phase angle of the external power to obtain phase-cut AC power, so as to make a microprocessor unit send a white color control signal to a light emitting unit for emitting an illumination white light. The method further comprises turning off the external dimmer switch and turning it on again after a first interval time; determining, by the microprocessor unit, the first interval time is shorter than a predetermined time, then executing a conduction phase angle determination procedure. Through the microprocessor unit, the conduction phase angle determination procedure determines if the conduction phase angle outputted by the external dimmer switch is greater than or less than a predetermined conduction phase angle. Accordingly, the light emitting unit can emit a colorful light composed of plural distinct light colors Cn or a colored light having a single light color Ci.

Description

Lighting device and light color control method thereof

The invention relates to a lighting device and a method for controlling light color thereof, and more particularly to a lighting device and a method for controlling light color by using an external dimming switch to control a lighting mode.

With the advancement of light-emitting diode manufacturing technology, the color of light emitted by it is no longer only the traditional white color, but also various colors composed of red, green, blue and their combinations. In addition to illuminating the target to make it more clear, the function of the device is becoming more and more popular by changing the light color of the lighting device to achieve the purpose of environmental arrangement, creating an atmosphere, and hosting entertainment activities.

The conventional way of controlling the lighting device, such as "INTEGRATED WIRELESS AND WIRED LIGHT CONTROL SYSTEM" disclosed in US Patent Publication No. US 20150008846, includes a wired control device, a wireless control device, a communication module and a plurality of lamps, The wired control device includes a first user interface and a first wired communication protocol interface. The wireless control device includes a second user interface and a first wireless communication protocol interface. The communication module includes a second wired communication. Protocol interface and a second wireless communication protocol interface, the lamp includes a third wired communication protocol interface, and each of the lamps performs data exchange with each other through a network line connected to the third wired communication protocol interface, the first wired communication Data can be exchanged directly between the protocol interface and the second wired communication protocol interface, and data can be directly exchanged between the first wireless communication protocol interface and the second wireless communication protocol interface, wherein the first user interface and the first The lighting parameters of the second user interface are color, brightness, lighting angle or lighting time.

It can be seen that the lamps can be controlled by the wired control device or the wireless control device in a wired or wireless manner, and can control the color, brightness, lighting angle, or lighting time of the lamp. However, when the control is performed in the above manner, the lamp needs to be controlled by a transmission network to control the lamp under the power supply state. Therefore, its control system and operation method are more complicated than ordinary lighting devices, so the following will be generated: problem:

1. A special control switch needs to be prepared, and the power switch cannot be shared with general lighting devices.

2. An additional control device, such as a remote control, a mobile phone, or a computer, is required for control.

3. When using a mobile phone or a computer as the control device for control, it is necessary to install program software corresponding to the lamp, which results in more complicated and inconvenient use.

4. Whether it is wired control or wireless control, you need to prepare additional equipment, such as control switches, the control device or line configuration (wired control), etc., resulting in high use costs.

The main purpose of the present invention is to solve the problems that the conventional dimmer switch cannot control the light color of the lighting device and needs to additionally control the light color of the lighting device by adding a control device, which causes the problems of complicated operation and inconvenience and high use cost.

To achieve the above object, the present invention provides a light color control method for a lighting device, including the following steps:

Step S1: Provide a lighting device electrically connected to an external dimmer switch, the external dimmer switch determines whether to obtain an external power from a mains power and adjust a conduction phase angle of the external power to obtain all phase AC power, the lighting The device includes a rectifier electrically connected to the external dimmer switch and rectifying the phase-cut AC power to a high-voltage DC power, a power conversion circuit electrically connected to the rectifier, and a light-emitting unit electrically connected to the power conversion circuit. And a microprocessor unit electrically connected to the power conversion circuit;

Step S2: Turn on the external dimming switch, so that the power conversion circuit receives the high-voltage DC power and performs a power conversion to output a working voltage and a driving voltage. The microprocessor unit is activated after receiving the working voltage and issues a White light color control signal, the light emitting unit emits white light after receiving the white light color control signal;

Step S3: turn off the external dimming switch and turn it on again at a first interval;

Step S4: After the microprocessor unit executes a first identification program that determines that the first interval time is shorter than a first preset time, it executes a conduction phase angle determination program; and

Step S5: The conducting phase angle determining program is to judge, through the microprocessor unit, that the conducting phase angle output by the external dimmer switch is greater than a preset conducting phase angle, and then send a plurality of first color control signals to the timing according to a timing. A light emitting unit that receives a plurality of different light colors C _n after receiving the first color control signal, the light colors C _n have a total of n, and n is a parameter related to resolution; and

Step S6: When the light emitting unit emits a light color C _i , the microprocessor unit determines that the conduction phase angle output by the external dimmer switch is smaller than the preset conduction phase angle, and sends a second color control signal to the The light-emitting unit emits a color light corresponding to the light color C _i after receiving the second color control signal, and C _i represents the light color emitted at the i-th timing.

To achieve the above object, the present invention further provides a lighting device including a rectifier, a power conversion circuit, a light-emitting unit, and a microprocessor unit. The rectifier and a deciding whether to obtain an external power from a mains power and adjust the external power An external dimmer switch that is connected to all phases of AC power through a conduction phase angle is electrically connected, and receives the phase-cut AC power and rectifies it into a high-voltage DC power. The light-emitting unit includes a plurality of light-emitting diodes. The light-emitting unit is electrically connected to the power conversion circuit and receives the driving voltage to drive the light-emitting diode. Polar body, the microprocessor unit is electrically connected to the power conversion circuit and is activated after receiving the working voltage. After the microprocessor unit judges that the external dimmer switch is turned off for less than a first preset time and turned on again, A conducting phase angle determining program is executed. The conducting phase angle determining program is executed by the microprocessor. Analyzing the outer element of the dimmer switch conduction phase angle is greater than a predetermined after the conduction phase angle, a plurality of first color emitted control signal to the light emitting unit according to a timing that the light emitting unit emits a plurality of different color light C _n , there are n light colors C _{n in} total, n is a parameter related to resolution, wherein when the light emitting unit emits a light color C _i , the microprocessor unit judges the conduction phase angle of the external dimmer switch After being smaller than the preset conduction phase angle, a second color control signal is sent to the light-emitting unit, and the light-emitting unit sends a color light corresponding to the light color C _i after receiving the second color control signal.

It can be known from the above that the effect that the present invention can achieve compared with the conventional technique lies in determining whether the first interval time is shorter than the first preset time and determining that the conduction phase angle is less than or greater than the preset conduction phase angle To control the lighting device in different light emitting modes and the light color emitted, so that the user can determine the length of the first interval time by controlling the external dimmer switch, thereby controlling the desired light emission Mode or the light color, and no additional control device is required, so that the operation is simple and the cost is reduced.

The detailed description and technical contents of the present invention are described below with reference to the drawings:

Please refer to FIG. 1 for a schematic diagram of a device circuit according to a first embodiment of the present invention. The present invention is a lighting device including a rectifier 20, a power conversion circuit 30, a light-emitting unit 40, and a microprocessor unit. 50. The rectifier 20 is electrically connected to an external dimmer switch 10. The external dimmer switch 10 determines whether to obtain an external power from a commercial power source and adjust a conduction phase angle of the external power to obtain all-phase AC power. control AC). In an embodiment, the external dimming switch 10 includes a control circuit (Phase control thyristor) that controls the conduction phase angle by using a thyristor. For example, it can be a switchable power switch installed on a wall. (Wall Switch) and a dimmer (phase cut dimmer) or a knob-type dimmer switch (Knbo Dimmer Switch). The above are just two examples. The present invention is not limited to this. The rectifier 20 receives the external dimming. The phase-cut AC power output by the optical switch 10 is rectified into a high-voltage DC power. In one embodiment, the rectifier 20 includes a plurality of diodes and has multiple design methods. The energy can be converted from the mains with alternating current properties to the high-voltage direct current with direct current properties. The power conversion circuit 30 is electrically connected to the rectifier 20 to receive the high-voltage DC power, and can automatically start and perform a power conversion to output a driving voltage VO and a working voltage. A self-excited power conversion circuit, a separate-excitation power conversion circuit, or a modular power conversion circuit (Power module). The detailed description is as follows. When the phase-cut AC power is input, the high-voltage DC power is first rectified through the rectifier 20, and the high-voltage DC power passes a first resistor R1 to a Metal Oxide Semiconductor Field Effect Transistor (MOSFET for short). ) Q1, the gate potential of the field effect transistor Q1 rises and turns on, so that the high voltage DC current passes through the primary winding N1 of a transformer T1 and puts the transformer T1 into an energy storage state, and then through a second resistor R2 and a The ground wire GW is electrically connected. When the high voltage direct current passes through the second resistor R2, a partial voltage proportional to the high voltage direct current will be generated, and the partial voltage will pass through a third resistor R3 to make a transistor. Q2 is turned on to cut off the change of the field effect transistor Q1, that is, the on-state enters the off-state. The above change causes the transformer T1 to enter an energy release state, and the power released by a second winding N2 of the transformer T1 passes through a The first diode D1 is transmitted to a first capacitor C1 and generates the driving voltage VO. At the same time, a third winding N3 of the transformer T1 will release a feedback voltage. After being rectified by a second diode D2, it is stored in a second capacitor C2 and outputs a system voltage VS, and the feedback voltage is also fed back to the transistor Q2 through a fourth resistor R4 and a fifth resistor R5, so that the transistor Q2 Transistor Q2 continues to be turned on until the feedback voltage disappears. Then, the field effect transistor Q1 is turned on again to enter the next cycle. The driving voltage VO and the system voltage VS are repeatedly output as described above.

In this embodiment, the power conversion circuit 30 further includes a voltage stabilization unit 31 and a DC detection circuit 32. The voltage stabilization unit 31 is electrically connected between the microprocessor unit 50 and the system voltage VS. The voltage provided by the system voltage VS is generally higher than the voltage that the microprocessor unit 50 can withstand. Therefore, the voltage stabilization unit 31 and a third diode D3 are required to output the voltage for the microprocessor unit 50 to run. Working voltage, wherein the third diode D3 has a function of preventing reverse current; the DC detection circuit 32 is electrically connected to a first port A of the microprocessor unit 50 and the system voltage VS, and includes a sixth The resistor R6 and a seventh resistor R7. The sixth resistor R6 and the seventh resistor R7 form a voltage dividing circuit to provide a divided voltage proportional to the system voltage VS to the first voltage of the microprocessor unit 50. A port A. The first port A has a digital / analog conversion detection effect, so that the microprocessor unit 50 has a function of monitoring a change in the system voltage VS.

The light emitting unit 40 includes a plurality of light emitting diodes, and is electrically connected to the power conversion circuit 30 and receives the driving voltage VO to drive the light emitting diodes. For example, the light emitting unit 40 may include a plurality of light emitting diodes. White light emitting diodes that can emit white, red, green and blue light, red light emitting diode, green light emitting diode, and blue light emitting diode, respectively. Among them, red light, green light and blue light are the three primary colors of light. In order to combine and emit a plurality of different colored light and white light, in one embodiment, the white light provided by the white light emitting diode can be mixed with the colored light to adjust the intensity of the colored light. In this embodiment, The above-mentioned white light may be generated by mixing the three primary colors, or a compensation white light may be added to the white light generated by mixing the three primary colors to improve the brightness.

The microprocessor unit 50 is electrically connected to the power conversion circuit 30 and is activated after receiving the operating voltage. The microprocessor unit 50 has different ports to perform different functions, including a second port B, a first port Three ports C, a fourth port D, a fifth port E, a sixth port F, a seventh port G, and an eleventh port K. The second port B outputs a low potential to interrupt the third winding. The feedback voltage of N3 further interrupts the operation of the self-excited power conversion circuit, and then outputs a continuous voltage pulse through the third port C. The continuous voltage pulse replaces the feedback voltage and changes the transistor Q2 and the field effect transistor. The on or off state of Q1 and the output voltage values of the driving voltage VO and the system voltage VS are changed, so that the microprocessor unit 50 has a function of adjusting the driving voltage VO according to the conduction phase angle; the fourth port D It has digital / analog conversion detection function. After obtaining all the voltage conversion values of the half-cycle phase of the phase-cut AC power by continuous detection, the collective analysis is performed to obtain the conduction phase angle and a phase interval time (ts). It can determine whether a utility power turned on or off messages. In the present invention, the microprocessor unit 50 includes a microprocessor and its peripheral circuits, wherein the microprocessor has various memories built in, such as a temporary storage memory (RAM) and a read-only memory (ROM). Or an electronically erasable rewritable read only memory (Electrically Erasable Programmable Read Only Memory, EEPROM for short). In this embodiment, after the microprocessor unit 50 determines that the external dimmer switch 10 is turned off for less than a first preset time and is turned on again, it executes a conduction phase angle determination program, and the conduction phase angle determination program is through the The microprocessor unit 50 determines whether the conduction phase angle output by the external dimmer switch 10 is less than or greater than a preset conduction phase angle. When it is judged that the conduction phase angle is greater than the preset conduction phase angle, it issues a complex number according to a timing a first color control signal to the light emitting unit 40, so that the light emitting unit 40 emits a plurality of different light color C _n, C _n of the light color there are n, and n is a parameter related to resolution; when the emission When the unit 40 emits a light color _Ci , the microprocessor unit 50 determines that the conduction phase angle output by the external dimmer switch 10 is smaller than the preset conduction phase angle, and sends a second color control signal to the light emitting unit 40. After receiving the second color control signal, the light emitting unit 40 emits a color light corresponding to the light color C _i . The above-mentioned color control signals refer to the microprocessor unit 50 outputting control signals with different proportions of on / off time at the fifth port E, the sixth port F, the seventh port G, and the eleventh port K, respectively. (PWM), in which the eleventh port K emits a pair of illumination white light brightness compensation signals that should compensate white light. In this embodiment, an eighth port H and a ninth port I of the microprocessor unit 50 are activated by receiving a positive potential and a negative potential of the operating voltage, respectively. The timing can be further defined as follows: time: a color change interval time (t) synchronized with the mains phase, sequence: the sequence variable (i) of the light color, and the timing provides a function to change color synchronously with the mains phase. In addition, the microprocessor unit 50 is electrically connected to a third capacitor C3, and the third capacitor C3 provides electrical energy that the microprocessor unit 50 can continuously operate when the external power is interrupted.

In the present invention, the resolution is related to the light level. For example, in one embodiment of the present invention, the three primary colors are each divided into 256 light levels, which can generate 768 colors after being mixed with each other, so n = 768, and n It is related to the byte used by the microprocessor unit 50, so it is not a fixed value.

It should be noted that the color change interval (t) is the duration of a single color control signal, and there are n different light colors, so a color cycle time for emitting the plurality of different light colors is equal to ( t) × (n), where (t) is a multiple of the phase interval time (ts) as the color change interval time (t), where the phase interval time is the half-cycle phase interval time of the mains, for example, 60Hz The phase of the mains is 0 degrees to 180 degrees and the phase of 180 degrees to 360 degrees is a half cycle phase, so the phase interval is about 0.0083 seconds. The light color sequence variable (i) is equal to a variable from 0 to n. The plurality of color control signals are at the beginning (i) = 0, and after each interval of the color change interval (t), the three primary colors are changed once. Color level state, and the color sequence variable increases by one bit, that is, (i) = i + 1, until n different light colors are emitted, (i) = n, and a color cycle is also completed, where C _n represents Is the set of colors from (i) = 0 to (i) = n, C _{i is} expressed as one of the colors (i) = 0 to (i) = n, and after completing a color cycle, (i) = 0 again Enter the next color cycle.

In an embodiment, the lighting device may further include a mains detection unit 60, a constant current unit 70, an internal power supply unit 80, and a detection capacitor. The mains detection unit 60 is electrically connected between the phase-cut AC power and the rectifier 20 and includes an output contact which is electrically connected to the fourth port D of the microprocessor unit 50. The mains The detection unit 60 includes an eighth resistor R8 electrically connected to a live wire L, a ninth resistor R9 electrically connected to a zero wire N, and a tenth resistor R10 electrically connected to the ground wire GW. When the rectifying action of the rectifier 20 causes the phase-cut AC power to be in a positive phase, the hot line L is a positive potential, and the potential of the neutral line N is close to the potential of the ground line GW. Therefore, the interval between the eighth resistor R8 and the tenth resistor R10 The electrical connection point outputs a positive phase positive voltage signal proportional to the positive half cycle of the phase-cut AC power. When the phase-cut AC power is negative, the zero line N is a positive potential, and the hot line L potential is close to the ground line GW potential. Therefore, the electrical connection point between the ninth resistor R9 and the tenth resistor R10 outputs a negative phase positive voltage signal proportional to the negative half cycle of the phase-cut AC power, and the positive phase positive voltage signal is positive to the negative phase. After the voltage signals are mixed, a rectified phase-cut AC communication is formed. The partial voltage of the eighth resistor R8, the ninth resistor R9, and the tenth resistor R10 reduces the amplitude of the rectified phase-cut AC power to the phase-cut AC signal.

It should be noted that the voltage level detectable by the microprocessor unit 50 is much lower than the voltage level of the mains, so the microprocessor unit 50 needs to reduce the voltage amplitude of the mains by the mains detection unit 60. The voltage amplitude and phase information of the mains can be detected after the values are obtained; the constant current unit 70 is electrically connected between the light emitting diodes and the microprocessor unit 50 and includes a first constant current electronic switch 71. A second constant current electronic switch 72, a third constant current electronic switch 73, and a fourth constant current electronic switch 74. The constant current unit 70 is an electronic switch electronic that can be controlled to be turned on or off by an electronic signal. Circuit, when controlled to be off, the current is zero, and when controlled to be on, it can automatically limit the conduction current to a fixed range. It should be noted that the constant current unit 70 has a variety of designs, including Separate circuit design, constant current integrated circuit (IC) design, or design built in the microprocessor unit 50; the internal power supply unit 80 and the detection capacitor are electrically connected to the microprocessor unit 50, the The internal power supply unit 80 can be a power supply Pool or a capacitor.

Please refer to "Figure 2" and "Figure 3" for the schematic diagram of the device circuit of the second embodiment of the present invention and the schematic diagram of the device circuit of the third embodiment of the present invention. It should be particularly noted that when the external power is interrupted After that, the operating voltage and the driving voltage VO cannot be generated, so the conventional control method for controlling the lighting device is to perform without interrupting the external power. However, the present invention uses interrupting the external power and setting The manner of the internal power supply unit 80 is regulated. In the first embodiment of the present invention, the internal power supply unit 80 is the third capacitor C3 (as shown in FIG. 1), and in the second embodiment of the present invention The internal power supply unit is a power supply battery B1 (as shown in "Fig. 2"). In the third embodiment of the present invention, unlike the previous embodiment, it is controlled by a resistance-capacitance unit S1 (as shown in "Fig. 2"). 3 "), detailed control methods will be described later.

Please refer to "Fig. 4" for a schematic flowchart of steps according to an embodiment of the present invention. The present invention is a light color control method for a lighting device, which includes the following steps:

Step S1: Provide the lighting device and be electrically connected to the external dimmer switch 10. The lighting device includes the rectifier 20, the power conversion circuit 30, the light emitting unit 40 and the microprocessor unit 50. The external dimmer switch 10 determines whether to obtain an external power from a mains power and adjust a conduction phase angle of the external power to obtain all-phase AC power. The rectifier 20 is electrically connected to the external dimmer switch 10 and rectifies the phase-cut AC power to the high level. The voltage is DC, the power conversion circuit 30 is electrically connected to the rectifier 20, the light emitting unit 40 is electrically connected to the power conversion circuit 30, and the microprocessor unit 50 is electrically connected to the power conversion circuit 30. Further, In this embodiment, the microprocessor unit 50 is electrically connected between the power conversion circuit 30 and the constant current unit 70.

Step S2: Turn on the external dimming switch 10, so that the power conversion circuit 30 receives the high-voltage DC power and performs a power conversion to output a working voltage and a driving voltage VO. The microprocessor unit 50 receives the working voltage and is A white light color control signal is activated and emitted, and the light emitting unit 40 emits a white light after receiving the white light color control signal.

Step S3: turn off the external dimming switch 10 and turn it on again at a first interval;

Step S4: After the microprocessor unit 50 executes a first identification program that determines whether the first interval time is shorter than a first preset time, if it is determined to be yes, then execute a conduction phase angle determination program, otherwise return Step 2.

Step S5: The conduction phase angle determination program determines whether the conduction phase angle of the external dimmer switch 10 is greater than the preset conduction phase angle through the microprocessor unit 50.

Step S5A: If it is determined that the conduction phase angle is greater than the preset conduction phase angle, a plurality of first color control signals are sent to the light-emitting unit 40 according to a timing, and the light-emitting unit 40 sends a plurality of numbers after receiving the first color control signal. There are different light colors C _n . There are n light colors C _{n in} total, where n is a parameter related to resolution.

Step S6: if it is determined that the conduction phase angle is smaller than the preset conduction phase angle, a second color control signal is sent to the light emitting unit 40, and the light emitting unit 40 receives a second color control signal and sends a corresponding light to the light. The colored light of the color C _i , C _i represents the color of light emitted at the i-th timing.

In the first embodiment, as shown in FIG. 1, the lighting device further includes the internal power supply unit 80 electrically connected to the microprocessor unit 50. In this embodiment, the internal power supply unit 80 is the The third capacitor C3, step S3 further includes the following steps: step 3A-1: after the external dimmer switch 10 is turned off, the internal power supply unit 80 is discharged to the microprocessor unit 50 to maintain operation; and step 3A-2: After the external dimmer switch 10 is turned on again, the microprocessor unit 50 is powered by the operating voltage to maintain the operation. The first identification procedure is achieved by using the internal power supply unit 80. The detailed description of the first identification procedure is as follows. First, an electric energy is stored by the third capacitor C3. When the external power is interrupted, the driving voltage VO becomes impossible. Supplied to the light-emitting unit 40 and the operating voltage cannot be supplied to the microprocessor unit 50, at this time, the third capacitor C3 releases the electric energy to the microprocessor unit 50 to maintain the normal operation of the microprocessor unit 50 The release of the electrical energy from the third capacitor C3 to the microprocessor unit 50 is defined as the beginning, and the time until the third capacitor C3 runs out of the electrical energy and interrupts the operation of the microprocessor unit 50 is defined as the time elapsed Is the first preset time; in addition, turning off the external dimmer switch 10 is defined as starting, turning on the external dimmer switch 10 again is defined as ending, and the time elapsed during the period is the first interval time.

The operation is as follows, the external dimmer switch 10 is turned on, the phase-cut AC power outputs the high-voltage DC power through the rectifier 20 to cause the light-emitting unit 40 to emit the illumination white light, and then the external dimmer switch 10 is turned off. After the mains detection unit 60 detects that the mains output is interrupted, the microprocessor unit 50 releases the electric energy through the third capacitor C3 to maintain normal operation and is set to a first working mode in advance, while using a built-in A first working parameter of the first working mode is recorded in a temporary memory (RAM) of the microprocessor unit 50, and the external dimmer switch 10 is turned on again after the first interval time, then the microprocessor unit 50 revolutions are powered by the external power. If the microprocessor unit 50 releases the electrical energy from the third capacitor C3 in a normal operating state, and then continues to be powered by the external power to maintain its normal operating state, the microcomputer The processor unit 50 will execute the first identification program that determines that the first interval time is shorter than the first preset time, and execute the conduction phase angle determination program. Conversely, when the external dimmer switch 10 is turned on again after the first interval time, if the microprocessor unit 50 is in a state where the third capacitor C3 runs out of power and the operation is interrupted, then the microprocessor The unit 50 has lost the setting of the first working mode, and when the external power is supplied to resume operation, an initial working mode is executed. The initial working mode is issued according to the conduction phase angle and corresponds to the conduction phase angle. The lighting is white.

The conduction phase angle determination program determines that the conduction phase angle of the external dimmer switch 10 is greater than or less than the preset conduction phase angle through the microprocessor unit 50, and determines that the light emitting unit 40 emits a plurality of different lights Color C _n or colored light of the fixed light color C _i . In another embodiment, in the conducting phase angle determination program, the action performed by the conducting phase angle is greater than or less than the preset conducting phase angle is opposite to the above embodiment. For example, when determining that the conducting phase angle is smaller than the preset When the conduction phase angle is reached, the light emitting unit 40 emits a plurality of different light colors C _n . When it is determined that the conduction phase angle is greater than the preset conduction phase angle, the light emitting unit 40 emits a fixed colored light of the light color C _i .

In the second embodiment, as shown in FIG. 2, in this embodiment, the internal power supply unit 80 is the power supply battery B1. The difference from the first embodiment is that when the external power is interrupted, the microprocessor The unit 50 supplies the power to the microprocessor unit 50 with the power supply battery B1 to maintain the normal operation of the microprocessor unit 50 and the first preset time is set by the microprocessor unit 50, and then similarly The first identification procedure and the conduction phase angle determination procedure are performed in the above manner to determine that the light emitting unit 40 emits the illumination white light, the light color C _n, or the light color C _i , and therefore will not be repeated here.

In the third embodiment, as shown in FIG. 3, the lighting device further includes the internal power supply unit 80 and the resistance-capacitance unit S1. The internal power supply unit 80 and the resistance-capacitance unit S1 are both connected to the microprocessor unit. 50 is electrically connected. In this embodiment, the internal power supply unit 80 is the third capacitor C3, the detection capacitor is a fourth capacitor C4 and is located in the resistor-capacitor unit S1. In this embodiment, step S3 further includes The following steps: Step 3B-1: After the external dimmer switch 10 is turned off, the internal power supply unit 80 is discharged to the microprocessor unit 50 to maintain operation; Step 3B-2: After the external dimmer switch 10 is turned on again, The microprocessor unit 50 is powered by the operating voltage to maintain operation. The difference from the above embodiment is that under the condition that the resistance-capacitance unit S1 is powered by the external power, the microprocessor unit 50 charges the fourth capacitor C4 from a tenth port J through a fourth diode D4. After the external power is interrupted, the tenth port J assumes the potential state of the fourth capacitor C4. The fourth capacitor C4 discharges an eleventh resistor R11 and an internal resistance of the tenth port J. At the same time, the fourth A detection voltage across the capacitor C4 also shows a decrease. The time required when the detection voltage of the fourth capacitor C4 drops to a preset potential is the first preset time, and another one of the fourth capacitor C4 is A resistance-capacitance time constant obtained by a product of the capacitance and the eleventh resistor R11 and the internal resistance, and the resistance-capacitance time constant is directly proportional to the first preset time. Therefore, when the microprocessor unit 50 turns on the external dimmer switch 10 again, it detects a residual voltage of the fourth capacitor C4. If the residual voltage is higher than a preset value, it is judged that the first interval time is shorter than At the first preset time, the conducting phase angle determination program is executed. Conversely, if the remaining voltage is lower than the preset value, it is judged that the first interval time is longer than the first preset time, at which time the initial working mode is executed, and the initial working mode is issued according to the conduction phase angle The illuminated white light corresponding to the on-phase angle. The conduction phase angle determination procedure is similar to that of the first embodiment, so it will not be repeated here.

In summary, by judging whether the first interval time is shorter than the first preset time and judging that the conduction phase angle is less than or greater than the preset conduction phase angle, the lighting device is controlled in different light emitting modes and locations. The light color is emitted, so that the user can determine the length of the first interval time by himself through the external dimmer switch, so as to control the desired light emitting mode or the light color, and no additional control device is required, and To achieve the effect of simple operation and reduce costs.

The present invention has been described in detail above, but the above is only a preferred embodiment of the present invention, and the scope of implementation of the present invention cannot be limited. That is, all equivalent changes and modifications made in accordance with the scope of the application of the present invention should still fall within the scope of the patent of the present invention.

Steps S1 ~ S6‧‧‧‧

10‧‧‧External dimmer switch

20‧‧‧ Rectifier

30‧‧‧Power Conversion Circuit

31‧‧‧Regulator

32‧‧‧DC detection circuit

40‧‧‧light-emitting unit

50‧‧‧ microprocessor unit

60‧‧‧mains detection unit

70‧‧‧Constant current unit

71‧‧‧The first constant current electronic switch

72‧‧‧Second constant current electronic switch

73‧‧‧The third constant current electronic switch

74‧‧‧Fourth constant current electronic switch

80‧‧‧ Internal Power Supply Unit

C1‧‧‧first capacitor

C2‧‧‧Second capacitor

C3‧‧‧Third capacitor

C4‧‧‧Fourth capacitor

B1‧‧‧ Powered Battery

S1‧‧‧Resistance Capacitor Unit

R1‧‧‧first resistor

R2‧‧‧Second resistor

R3‧‧‧Third resistor

R4‧‧‧Fourth resistor

R5‧‧‧Fifth resistor

R6‧‧‧sixth resistor

R7‧‧‧seventh resistor

R8‧‧‧eighth resistor

R9‧‧‧ Ninth Resistor

R10‧‧‧Tenth resistor

R11‧‧‧Eleventh resistor

Q1‧‧‧Field Effect Transistor

Q2‧‧‧Transistor

D1‧‧‧First Diode

D2‧‧‧Second Diode

D3‧‧‧ third diode

D4‧‧‧ Fourth Diode

VO‧‧‧Drive voltage

VS‧‧‧System voltage

T1‧‧‧Transformer

N1‧‧‧Primary winding

N2‧‧‧Second Winding

N3‧‧‧Third Winding

A‧‧‧First port

B‧‧‧Second Port

C‧‧‧ third port

D‧‧‧Fourth port

E‧‧‧Fifth port

F‧‧‧Port Six

G‧‧‧Port 7

H‧‧‧Port eight

I‧‧‧Port 9

J‧‧‧Port 10

K‧‧‧Port 11

L‧‧‧FireWire

N‧‧‧Zero

GW‧‧‧Ground

[Figure 1] is a schematic circuit diagram of a device according to a first embodiment of the present invention. [Figure 2] is a schematic circuit diagram of a device according to a second embodiment of the present invention. [Figure 3] is a schematic circuit diagram of a device according to a third embodiment of the present invention. [Figure 4] is a schematic flowchart of steps according to an embodiment of the present invention.

Claims (9)

A light color control method for a lighting device includes the following steps: Step S1: Provide a lighting device electrically connected to an external dimmer switch. The external dimmer switch determines whether to obtain an external power from a commercial power source and adjusts the external power. All phase AC power is obtained by conducting a phase angle, the lighting device includes a rectifier electrically connected to the external dimmer switch and rectifying the phase-cut AC power to a high voltage DC power, and a power conversion circuit electrically connected to the rectifier. A light-emitting unit electrically connected to the power conversion circuit and a microprocessor unit electrically connected to the power conversion circuit; Step S2: turning on the external dimming switch so that the power conversion circuit receives the high-voltage DC power and Performing a power conversion to output a working voltage and a driving voltage, the microprocessor unit is activated after receiving the working voltage and sends out a white light color control signal, and the light emitting unit emits a white light after receiving the white light color control signal; step S3: Turn off the external dimming switch and turn it on again at a first interval; Step S4: After the microprocessor unit executes a first identification program that judges that the first interval time is shorter than a first preset time, it executes a conduction phase angle judgment program; Step S5: the conduction phase angle judgment program is transmitted After the microprocessor unit judges that the conduction phase angle of the external dimmer switch is greater than a preset conduction phase angle, it sends a plurality of first color control signals to the light emitting unit according to a timing, and the light emitting unit receives the first color control After the signal, a plurality of different light colors C _{n are} emitted. There are n light colors C _{n in} total, where n is a parameter related to resolution; and step S6: when the light-emitting unit emits a light color C _i , the micro After the processor unit judges that the conduction phase angle of the external dimmer switch is smaller than the preset conduction phase angle, it sends a second color control signal to the light-emitting unit, and the light-emitting unit receives a second color control signal and sends a corresponding to the light color of the light color C _i, C _i represents the i th color light emitted timing. According to the light color control method described in the first item of the patent application scope, wherein the lighting device further includes an internal power supply unit electrically connected to the microprocessor unit, step S3 further includes the following steps: Step 3A-1: Turn off the After the external dimmer switch, the internal power supply unit is discharged to the microprocessor unit to maintain operation; and step 3A-2: after the external dimmer switch is turned on again, the microprocessor unit is powered by the operating voltage to maintain When the external dimmer switch is turned on again, if the microprocessor unit is still discharged by the internal power supply unit without interrupting operation, it is determined that the first interval time is shorter than the first preset time. According to the light color control method described in item 1 of the scope of patent application, wherein the lighting device further includes an internal power supply unit and a detection capacitor electrically connected to the microprocessor unit, step S3 further includes the following steps: Step 3B- 1: after the external dimmer switch is turned off, the internal power supply unit is discharged to the microprocessor unit to maintain operation; and step 3B-2: after the external dimmer switch is turned on again, the microcomputer is powered by the operating voltage The monitor unit is maintained in operation. When the external dimmer switch is turned on again, if a residual voltage of the detection capacitor is higher than a preset value, it is determined that the first interval time is shorter than the first preset time. A lighting device includes: a rectifier electrically connected to an external dimming switch that determines whether to obtain an external power from a mains power and adjust a conduction phase angle of the external power to obtain all phases of AC power, and receives the dimming AC power And rectified into a high voltage direct current; a power conversion circuit electrically connected to the rectifier to receive the high voltage direct current and start automatically and perform a power conversion to output a driving voltage and a working voltage; a light emitting unit including a plurality of A light-emitting diode, the light-emitting unit is electrically connected to the power conversion circuit, and receives the driving voltage to drive the light-emitting diode; and a microprocessor unit, electrically connected to the power conversion circuit, and receives the working voltage After being started, the microprocessor unit judges that the external dimmer switch is turned off for less than a first preset time and turns on again, and then executes a conduction phase angle judgment program, which is passed through the microprocessor unit After determining that the conduction phase angle output by the external dimmer switch is greater than a preset conduction phase angle, press A plurality of first color emitted timing control signal to the light emitting unit, so that the light emitting unit emits light of a plurality of different color C _n, C _n of the light color there are n, and n is a parameter related to resolution; wherein When the light emitting unit emits a light color C _i , the microprocessor unit judges that the conduction phase angle of the external dimmer switch is smaller than the preset conduction phase angle, and sends a second color control signal to the light emitting unit, After receiving the second color control signal, the light emitting unit emits a color light corresponding to the light color C _i . The lighting device according to item 4 of the patent application scope, wherein the rectifier includes a plurality of diodes. The lighting device according to item 4 of the scope of patent application, further comprising a mains detection unit electrically connected between the phase-cut AC power and the rectifier, and the mains detection unit includes an electrical connection with the microprocessor unit. Output contact. The lighting device according to item 4 of the scope of patent application, further comprising a plurality of constant-current electronic switches electrically connected between the light-emitting diodes and the microprocessor unit. The lighting device according to item 4 of the scope of patent application, further comprising an internal power supply unit electrically connected to the microprocessor unit, and the internal power supply unit is a battery or a capacitor. The lighting device according to item 4 of the patent application scope, further comprising a detection capacitor electrically connected to the microprocessor unit.