TW201818786A - Illumination device and light color control method thereof having a microprocessor unit to control the light-emitting unit to emit the corresponding illumination white light or the light color Ci if it is determined to be a second working mode - Google Patents

Abstract

A light color control method of an illumination device is disclosed, which includes the steps of turning on an external switch for allowing a light-emitting unit to emit a low-brightness white light; turning off the external switch when determined to exceed a first interval time; a microprocessor unit executing a working mode identification procedure; if it is determined to be a first working mode, the microprocessor unit controlling the light-emitting unit to emit an illumination white light; turning off the external switch when determined to exceed a second interval time; the microprocessor unit controlling the light-emitting unit to emit plural different light colors Cn; determining the external switch to be turned off; the microprocessor unit controlling the light-emitting unit to emit a light color Ci; if it is determined to be a second working mode, the microprocessor unit controlling the light-emitting unit to emit the corresponding illumination white light or the light color Ci.

Description

Lighting device and light color control method thereof

The invention relates to a lighting device and a light color control method thereof, and more particularly to a lighting device with a memory function and a light color control method thereof.

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.

For example, the Republic of China Invention Patent Publication No. I540934 proposes an LED lighting dimming circuit for controlling the dimming of LED elements, which is characterized by having a power terminal to supply a power voltage, a ground terminal to be connected to ground, and a first output terminal. Connected to the power supply terminal and connected to the anode side of the LED element; a second output terminal connected to the cathode side of the LED element; a capacitor to one end of the first output terminal and the other end to the second output terminal; A coil is connected to one end of the other end of the capacitor; a switching element is connected to one end of the other end of the coil; a resistor is connected to one end of the other end of the switching element and the other end is connected to the ground terminal; a diode is connected to the power supply. The terminal is connected to the cathode, and the other end of the coil is connected to the anode; and the control circuit, according to a dimming signal showing the dimming rate of the LED element, a detection voltage corresponding to the voltage drop of the resistor, and a detection current flowing in the coil , Using a switch control signal to control the operation of the aforementioned switching element; In the control circuit, in the first mode in which the dimming signal displays the first dimming rate, the switching cycle formed by the on period of turning on the switching element and the off period of turning off the switching element is fixed. In the second mode in which the light signal displays the dimming rate in the first dimming interval from the first dimming rate to a second dimming rate lower than the first dimming rate, the dimming signal displayed by the dimming signal When the luminous rate is reduced, the switching period is reduced while maintaining the ratio between the on period and the off period, and the dimming signal is displayed from the second dimming rate to more than the second dimming rate. In the third mode of the second dimming interval up to the low third dimming rate, when the dimming rate displayed by the dimming signal decreases, the on period is fixed to shorten the on period. In a fourth mode in which the dimming signal displays a dimming rate in a third dimming interval from the third dimming rate to a fourth dimming rate lower than the third dimming rate, the dimming When the dimming rate displayed by the optical signal decreases, The on period is shorter and the off period is longer. In the fifth mode in which the dimming signal displays the dimming rate of the fourth dimming rate, the on period is fixed and the off period is fixed to a ratio. When the closing period of the fourth mode is longer, when the value of the dimming signal is above the first threshold, it is determined that the control mode of the LED lighting dimming circuit is the first mode, and the value of the dimming signal is When it is equal to or larger than the second threshold value smaller than the first threshold value and less than the first threshold value, it is determined that the control mode is the second mode.

In the above prior art, the traditional multi-segment dimming lighting device does not have the color control function of colored light. Therefore, the single light emission color mainly focuses on the change of white light and its brightness and color temperature, and the lighting device does not have a memory function. That is, it takes time to operate when selecting the light for the first time, and it needs to be reset when the same brightness or color temperature is used next time. Therefore, the convenience of the conventional lighting device needs to be improved.

The main purpose of the present invention is to solve the problems that the conventional lighting device still needs to improve the color control of color light and the convenience during operation.

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 switch. The external switch determines whether to obtain an external power from a commercial power source. The lighting device includes an electrical connection to the external switch and rectifies the external power into a high voltage. DC power rectifier, a power conversion circuit electrically connected to the rectifier, a light-emitting unit electrically connected to the power conversion circuit, and a microcomputer electrically connected to the power conversion circuit and having a rewritable read-only memory Processor unit

Step S2: Turn on the external switch, the city current passes through the rectifier and causes the power conversion circuit to receive the high-voltage direct current and perform a power conversion to output a working voltage and a driving voltage. After the microprocessor unit receives the working voltage To execute an initial procedure;

Step S3: the microprocessor unit outputs a low-brightness white light control signal at a first interval, the light-emitting unit emits a low-brightness white light after receiving the low-brightness white-light control signal, and determines whether the external switch is at the first interval Time off

Step S4: If the external switch is continuously turned on after the first interval time is exceeded, the microprocessor unit reads a record data stored in the rewritable read-only memory and executes a work pattern recognition program, the work The pattern recognition program determines whether the record data stored in the rewritable read-only memory is a first working mode or a second working mode;

Step S5: if the record data is the first working mode, the microprocessor unit outputs a lighting white light control signal at a second interval, the light emitting unit sends a lighting white light after receiving the lighting white light control signal, and judges Whether the external switch is turned off within the second interval, and if so, write the record data in the rewritable read-only memory as the second working mode and a pair of light colors that should illuminate a white light control signal Data, if not, the microprocessor unit sends a plurality of first color control signals to the light emitting unit according to a phase sequence, and the light emitting unit sends a plurality of different light colors C _n after receiving the first color control signal There are n light colors C _n , n is a parameter related to resolution, and it is determined whether the external switch is turned off. When the light unit emits a light color C _i , if the microprocessor unit judges the external the switch is turned off, the erasable read-only memory to write the log data for the second operating mode, and a control signal corresponding to the first color light color information, where C _i represents the i-th sequence in the A light color, the first color and the light color data control signal corresponding to the light color C _i; and

Step S6: if the record data is the second working mode, the microprocessor unit reads the light color data in the record data, outputs the lighting white light control signal or the first color control signal, and the light emitting unit accepts the After the illumination white light control signal or the first color control signal, the corresponding illumination white light or the light color C _{i is} emitted.

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 an external switch determine whether to obtain an external power from a commercial power source. Connected, and receives the external power and rectifies it into a high-voltage DC power, the power conversion circuit is electrically connected to the rectifier to receive the high-voltage DC power and can start automatically and perform a power conversion to output a driving voltage and a working voltage, the 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. The microprocessor unit has a rewritable read-only memory. After being electrically connected to the power conversion circuit and receiving the operating voltage, it is started and executes an initial procedure, and then sends a low-brightness white light signal at a first interval and determines whether the external switch is turned off. If yes, then The rewritable read-only memory resets a record data, and if not, reads the rewritable read-only memory After the log data is stored, a work mode recognition program is executed. The work mode recognition program determines whether the log data stored in the rewritable read-only memory is a first work mode or a second work mode. If the data is the first working mode, an illumination white light control signal is output to the light emitting unit at a second interval time, so that the light emitting unit emits an illumination white light, and it is further determined whether the external switch is within the second interval time. Turn off, if yes, write the record data in the rewritable read-only memory as the second working mode and a pair of light color data that should illuminate the white light control signal; if not, the microprocessor The unit sends a plurality of first color control signals to the light-emitting unit according to a phase sequence, and the light-emitting unit emits a plurality of different light colors C _n after receiving the first color control signal. There are n light colors C _{n in} total, n and a parameter related to resolution, and determines whether or not the external switch is turned off, when the light emitting unit emits a light color C _i, if it is judged that the external switch has been turned off, it can be in the Write-read only memory written in the log data for the second operating mode, and a control signal corresponding to the first color light color information, wherein, C _i represents the i th color light emitted by the timing, and the first to be The light color data of a color control signal corresponds to the light color C _i . If the record data is the second working mode, the lighting white light control signal or the first color is output according to the light color data in the record data. A control signal is sent to the light-emitting unit to emit the corresponding illumination white light or the light color C _i .

As can be seen from the above, the effect that the present invention can achieve compared to the conventional technique lies in that, by recording, resetting, and reading the working modes in the erasable read-only memory and the light corresponding to the light color control signal Color data to facilitate the operator to control the lighting device to emit desired colored light or white light at any time, and the rewritable read-only memory is still memorable when the external power cannot supply power, so the selected light color is It can be selected directly next time without resetting, which improves the convenience during operation.

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 an embodiment of the present invention. The present invention is a lighting device including a rectifier 10, a power conversion circuit 20, a light-emitting unit 30, and a microprocessor unit 40. The rectifier 10 is electrically connected to an external switch 50. The external switch 50 determines whether to obtain an external power from a commercial power source. The external switch 50 may be, for example, a switch-type power switch (Wall Switch) installed on a wall. The above is only an example of the present invention and is not limited thereto. The rectifier 10 receives the external power and rectifies it into a high-voltage DC power. In one embodiment, the rectifier 10 includes a plurality of diodes and has various design methods. Its function is to convert the city power with AC power into DC power. The high voltage direct current. The power conversion circuit 20 is electrically connected to the rectifier 10 to receive the high-voltage DC power, and then it can automatically start and perform a power conversion to output a driving voltage VO and a working voltage. For example, the power conversion circuit 20 can be a 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 utility power is input, it is first rectified into the high-voltage DC power through the rectifier 10, and the high-voltage DC power passes a first resistor R1 to a Metal Oxide Semiconductor Field Effect Transistor (MOSFET) Q1. The gate potential of the field effect transistor Q1 rises and conducts, so that the high-voltage direct current passes through a primary winding N1 of a transformer T1 and puts the transformer T1 into an energy storage state, and then passes a second resistor R2 to a ground The line GW is electrically connected. When the high voltage direct current passes through the second resistor R2, a partial voltage proportional to the current of 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, so that 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. The feedback voltage A second diode D2 is rectified and stored in a second capacitor C2 and outputs a system voltage VS. 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 continues to be turned on until the feedback voltage disappears, and then turns off. 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 20 further includes a voltage stabilization unit 21 and a DC detection circuit 22. The voltage stabilization unit 21 is electrically connected between the microprocessor unit 40 and the system voltage VS. The voltage provided by the system voltage VS is usually higher than the voltage that the microprocessor unit 40 can withstand. Therefore, the voltage stabilization unit 21 and a third diode D3 are required to output the voltage for the microprocessor unit 40 to run. Working voltage, wherein the third diode D3 has a function of preventing reverse current; the DC detection circuit 22 is electrically connected to a first port A of the microprocessor unit 40 and the system voltage VS, and the DC detection The circuit 22 includes a sixth 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 microprocessing. The first port A of the processor unit 40, wherein the first port A has a digital / analog conversion detection function, so that the microprocessor unit 40 has a function of monitoring changes in the system voltage VS.

The light emitting unit 30 includes a plurality of light emitting diodes. The light emitting unit 30 is electrically connected to the power conversion circuit 20 and receives the driving voltage VO to drive the light emitting diode. For example, the light emitting unit 30 may include A plurality of red light-emitting diodes, a green light-emitting diode, a blue light-emitting diode, and a white light-emitting diode that can emit red, green, blue, and white light, respectively. The first three are light. The three primary colors can be mixed with different luminous brightness to emit different colored light, and a combination of a plurality of luminous brightness can emit a plurality of different colored light and white light. In one embodiment, white light and After mixing the colored lights with each other, the intensity of the colored lights can be adjusted. In this embodiment, the white light can be generated by mixing the three primary colors, or a compensated white light can be added to the white light generated by the mixing of the three primary colors to improve the lighting brightness. It is explained that the white light-emitting diode is a selective light-color combination.

The microprocessor unit 40 is electrically connected to the power conversion circuit 20 and is activated after receiving the working voltage. The microprocessor unit 40 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 eighth port H. The second port B outputs a low potential to interrupt the third winding N3. The feedback voltage further interrupts the operation of the self-excited power conversion circuit, and then outputs a power conversion driving signal through the third port C. The power conversion driving signal is a pulse width modulation signal (PWM). It is used to replace the feedback voltage, change the on or off state of the transistor Q2 and the field effect transistor Q1, and change the output voltage value of the driving voltage VO, so that the microprocessor unit 40 is provided with a means for adjusting the driving voltage VO. Function; The fourth port D has a digital / analog conversion detection function. After continuous detection, all voltage conversion values of the half-cycle phase of a mains rectified signal are obtained, and then a set analysis is performed to obtain a Bit interval (ts), a utility power may be determined whether to turn on or off status messages. In the present invention, the microprocessor unit 40 includes a microprocessor and its peripheral circuits. The microprocessor has a variety of memories built in, such as a temporary memory (RAM) and a read-only memory (ROM). Or an Erasable Programmable Read Only Memory (EEPROM), which is an electronic erasable rewritable read-only memory.

In this embodiment, taking the rewritable read-only memory as an example, the microprocessor unit 40 determines that the external switch 50 is turned off after a first interval time, and reads the rewritable read-only memory. After the stored log data, a work mode identification program is executed. The work mode identification program determines whether the log data stored in the rewritable read-only memory is a first work mode or a second work mode. The working mode is that the microprocessor unit 40 outputs a lighting white light control signal to the light emitting unit 30 at a second interval time to cause the light emitting unit 30 to emit a white lighting light, and further determines whether the external switch 50 is at the second interval. Shut down within time, if yes, write the record data in the rewritable read-only memory as the second working mode and a pair of light color data that should illuminate the white light control signal, if not, then The microprocessor unit 40 sends a plurality of first color control signals to the light-emitting unit 30 according to a phase sequence. The light-emitting unit 30 sends a plurality of different light colors C after receiving the first color control signal. _n , there are n light colors C _{n in} total, n is a parameter related to resolution.

The second working mode is that the microprocessor unit 40 outputs the lighting white light control signal or the first color control signal to the light emitting unit 30 according to the light color data in the record data, and causes the light emitting unit 30 to emit a phase signal. The corresponding white light or a light color C _i , wherein the selection of the light color data corresponding to the first color control signal is after the external switch 50 is not turned off within the second interval, the micro The processor unit 40 sends a plurality of first color control signals to the light emitting unit 30 according to the phase timing. The light emitting unit 30 sends a plurality of different light colors C _n after receiving the first color control signal. When the light unit 30 When the light color C _i is emitted, the microprocessor unit 40 determines whether the external switch 50 is turned off, and if so, writes the log data in the rewritable read-only memory as the second working mode and a Corresponding to the light color data of the first color control signal, C _i represents the light color emitted at the i-th timing, and the light color data of the first color control signal corresponds to the light color C _i . The above-mentioned color control signal means that the microprocessor unit 40 outputs a pulse width adjustment at the fifth port E, the sixth port F, the seventh port G, and the eighth port H with different ratios of on / off time. Variable control signal (PWM), in which the microprocessor unit 40 determines the light level by a byte variable and the time ratio of power on / off in the color control signal. The byte variable that determines the light level is a light level message. For example, a byte of light level information contains 8 bits, which can determine the time ratio of 256 types of power on / off when the color control signal is sent, so that the light emitting unit 30 emits 256 types of brightness. Therefore, the light level information can be related to light emission. Corresponding to the brightness, the eighth port H sends a pair of white light brightness compensation signals that should compensate white light. The light color data is a message data including three primary color light levels and white light levels. The microprocessor unit 40 sends color control signals to control the light emitting unit 30 according to the three primary colors in the light color data and the white light level information, so as to emit three primary color lights and white lights of different brightness, respectively. The color of the light corresponding to the color data. It should be particularly noted that when the white light of the illumination is emitted, the three primary colors emit light with similar brightness and cause the white illumination of the light to emit blue or yellowish white illumination due to the difference in the three primary colors. The data is set when performing an initial procedure. In this embodiment, a ninth port I and a tenth port J of the microprocessor unit 40 are activated by receiving a positive potential and a negative potential of the operating voltage, respectively.

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 40, so it is not a fixed value.

It should be noted that the light color C _n is a spectrum, the light color C _i is one of the light colors in the spectrum, and a color change interval (t) is the duration of a single color control signal, and different light There are n colors in total, so a color cycle time of emitting a plurality of different light colors is equal to (t) × (n), where (t) is the phase interval time of detecting the mains by the microprocessor unit 40 (ts) and a multiple of the phase interval time (ts) as the color change interval time (t), and the sequence variable (i) of the light color is equal to a variable of 0 to n, and a plurality of the color control signals start from At the beginning (i) = 0, and then every time after the color change interval (t), the light level state of the three primary colors is changed, and the color sequence variable is increased by one bit, that is, (i) = i +1 until it is issued For n different light colors, (i) = n, and also complete a color cycle, where C _{n is} represented as a set of colors from (i) = 0 to (i) = n, and C _{i is} represented as (i) = 0 to (i) = n. After completing a color cycle, (i) = 0 and enter the next color cycle again. The color change interval time (t) is a time unit. When the phase interval time (ts) in the phase state of the commercial power cannot be obtained, the color change interval time (t) can also be obtained in a manner that can generate a time reference. For example, when the external power is direct current, a quartz crystal circuit is used to obtain the color change interval time (t).

In the present invention, the lighting device may further include a mains detection unit 60, a constant current unit 70, and an internal power supply unit 80. The mains detection unit 60 is electrically connected between the mains and the rectifier 10 and includes an output. Contact, the output contact is electrically connected to the fourth terminal D of the microprocessor unit 40, and the mains detection unit 60 includes an eighth resistor R8 electrically connected to a live wire L, and an electrical connection A ninth resistance R9 of a neutral line N and a tenth resistance R10 electrically connected to the ground line GW. When the mains power is in a positive phase due to the rectification effect of the rectifier 10, the live line L is a positive potential and the neutral line The N potential is close to the potential of the ground line GW, so the electrical connection point between the eighth resistor R8 and the tenth resistor R10 outputs a positive phase positive voltage signal proportional to the positive half cycle of the AC power of one of the mains. When the city power is in a negative phase, the neutral 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 one to the mains. One negative phase positive voltage signal After the positive phase positive voltage signal is mixed with the negative phase positive voltage signal, a rectified mains signal is formed. The divided voltages of the eighth resistor R8, the ninth resistor R9, and the tenth resistor R10 are rectified. The magnitude of the mains signal is reduced to the mains rectified signal.

It should be noted that the voltage level detectable by the microprocessor unit 40 is much lower than the voltage level of the mains, so the microprocessor unit 40 needs to reduce the voltage amplitude of the mains by the mains detection unit 60. After the value, the voltage amplitude and phase information of the mains can be detected.

The constant current unit 70 is electrically connected between the light emitting diodes and the microprocessor unit 40, and includes a first constant current electronic switch 71, a second constant current electronic switch 72, and a third constant current electronic The switch 73 and a fourth constant-current electronic switch 74 are electronic circuits of electronic switches that can be controlled to be turned on or off. The microprocessor unit 40 outputs the pulse width modulation control signal (PWM ) To control the constant-current electronic switches, so that the light-emitting unit 30 controls the luminous brightness according to the corresponding on / off time ratio, and the current is zero when controlled to be turned off, and can be automatically limited when controlled to be turned on A conducting current flow is within the range of a fixed specification. It should be noted that the constant current unit 70 has various designs, including a discrete circuit design, a constant current integrated circuit (IC) design, or a built-in microprocessor. Design of unit 40. The internal power supply unit 80 is electrically connected to the microprocessor unit 40. It should be particularly noted that when the external power is interrupted, the driving voltage VO cannot be generated. Therefore, the conventional control method for controlling the lighting device is The external power is interrupted. However, the present invention uses the internal power supply unit 80 to interrupt the external power, and then uses the internal power supply unit 80 to supply power to modify the recorded data. The internal power supply unit 80 is used after the external power is interrupted. To provide an internal power source to the microprocessor unit 40 to maintain the operation during the writing of the record data by the rewritable read-only memory. In this embodiment, the internal power supply unit 80 is a capacitor, wherein the capacitor Take a third capacitor C3 as an example.

Please refer to "Fig. 2" for a schematic flow chart of an embodiment of the present invention. The present invention is a method for controlling light color of a lighting device, which includes the following steps:

Step S1: Provide a lighting device electrically connected to an external switch 50. The external switch 50 determines whether to obtain an external power from a commercial power source. The lighting device includes an electrical connection to the external switch 50 and rectifies the external power. A rectifier 10 forming a high-voltage direct current, a power conversion circuit 20 electrically connected to the rectifier 10, a light-emitting unit 30 electrically connected to the power conversion circuit 20, and a power connection circuit 20 electrically connected to the power conversion circuit 20 and having a Microprocessor unit 40 with rewritable memory.

Step S2: the external switch 50 is turned on, the city current passes through the rectifier 10 and the power conversion circuit 20 receives the high-voltage DC power and performs a power conversion to output a working voltage and a driving voltage VO. The microprocessor unit 40 After accepting the operating voltage, an initial procedure is performed.

Step S3: The microprocessor unit 40 outputs a low-brightness white light control signal at a first interval, the light-emitting unit 30 emits a low-brightness white light after receiving the low-brightness white light control signal, and determines whether the external switch 50 is at the It is turned off for a first interval time, wherein the first interval time is the duration of the low-brightness white light emitted by the light emitting unit 30 and is set when the microprocessor unit 40 executes the initial program. Step S3 further includes the following steps: Step S3A: If the external switch 50 is turned off within the first interval, the microprocessor unit 40 resets a record data stored in the erasable ROM. The record data is written into the rewritable read-only memory as a first working mode and a pair of light color data which should illuminate a white light control signal.

Step S4: If the external switch 50 is continuously turned on after exceeding the first interval time, the microprocessor unit 40 executes a work mode identification program after reading the log data stored in the rewritable read-only memory. , The working mode identification program determines whether the record data stored in the rewritable read-only memory is the first working mode or a second working mode.

Step S5: If the record data is the first working mode, the microprocessor unit 40 outputs a lighting white light control signal at a second interval, and the light emitting unit 30 sends a lighting white light after receiving the lighting white light control signal. And it is judged whether the external switch 50 is turned off within a second interval time, wherein the second interval time is a duration for emitting the illumination white light, and is set when the microprocessor unit 40 executes the initial program. Step S5 further includes the following steps: Step S5A: If it is determined that the external switch 50 is not turned off within the second interval, the microprocessor unit 40 sends a plurality of first color control signals to a phase sequence to The light emitting unit 30, in this embodiment, the phase timing can be further defined as follows: hour: color change interval time (t) synchronized with the mains phase, sequence: sequence variable (i) of the light color, the timing is provided First, the function of changing colors in synchronization with the mains phase. After receiving the first color control signal, the light-emitting unit 30 emits a plurality of different light colors C _n . There are n light colors C _n , where n is a parameter related to a resolution, and determines whether the external switch 50 is Turn off; when the light-emitting unit 30 emits the light color C _i , the microprocessor unit 40 determines whether the external switch 50 is turned off, and if so, writes the record in the rewritable read-only memory The data is the second working mode and a pair of light color data corresponding to the first color control signal, wherein the light color data corresponding to the first color control signal is the corresponding light color C _i , where C _{i is} represented in the i-th Step S5B: if the external switch 50 is turned off within the second interval, writing the log data in the rewritable read-only memory is the second working mode and a pair Light color data for white light control signals should be illuminated.

Step S6: If the record data is the second working mode, the microprocessor unit 40 reads the light color data in the record data, and outputs the lighting white light control signal or the first light corresponding to the light color data. The color control signal. After receiving the illumination white light control signal or the first color control signal, the light emitting unit 30 emits the corresponding illumination white light or the light color C _i .

In summary, since the working modes in the erasable read-only memory and the light color data corresponding to the light color control signal can be recorded, reset and read, it is convenient for the operator to control the lighting at any time. The device emits the desired light color, and the rewritable read-only memory is still memorable when the external power cannot supply power, so the selected light color can be directly selected without re-setting the next time, which improves the operation Convenience.

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‧‧‧ Rectifier

20‧‧‧Power Conversion Circuit

21‧‧‧Regulator

22‧‧‧DC detection circuit

30‧‧‧light-emitting unit

40‧‧‧Microprocessor Unit

50‧‧‧External switch

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

VO‧‧‧Drive voltage

VS‧‧‧System voltage

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

Q1‧‧‧Field Effect Transistor

Q2‧‧‧Transistor

T1‧‧‧Transformer

N1‧‧‧Primary winding

N2‧‧‧Second Winding

N3‧‧‧Third Winding

D1‧‧‧First Diode

D2‧‧‧Second Diode

D3‧‧‧ third diode

C1‧‧‧first capacitor

C2‧‧‧Second capacitor

C3‧‧‧Third capacitor

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

L‧‧‧FireWire

N‧‧‧Zero

GW‧‧‧Ground

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

Claims (8)

A light color control method for a lighting device includes the following steps: Step S1: Provide a lighting device electrically connected to an external switch. The external switch determines whether to obtain an external power from a commercial power source. The lighting device includes an external device and an external device. The switch is electrically connected to the rectifier that rectifies the external power into a high-voltage direct current, a power conversion circuit electrically connected to the rectifier, a light-emitting unit electrically connected to the power conversion circuit, and an electrical connection to the power conversion circuit. A connected microprocessor unit with a rewritable read-only memory; step S2: turning on the external switch, the city current passes through the rectifier and causes the power conversion circuit to receive the high voltage direct current and perform a power conversion to output a Working voltage and a driving voltage, the microprocessor unit executes an initial program after receiving the working voltage; step S3: the microprocessor unit outputs a low-brightness white light control signal at a first interval, and the light-emitting unit receives the A low-brightness white light is emitted after the low-brightness white light control signal, and it is determined whether the external switch is Turn off during the first interval; Step S4: If the external switch is continuously turned on after exceeding the first interval, after the microprocessor unit reads a record data stored in the rewritable read-only memory, A work mode identification program is executed to determine whether the log data stored in the rewritable read-only memory is a first work mode or a second work mode; Step S5: If the log data is the first work mode In a working mode, the microprocessor unit outputs an illumination white light control signal at a second interval time, the light emitting unit emits an illumination white light after receiving the illumination white light control signal, and determines whether the external switch is at a second interval time Internal shutdown, if yes, write the record data in the rewritable read-only memory as the second working mode and a pair of light color data that should illuminate the white light control signal; if not, the micro processing The light emitting unit sends a plurality of first color control signals to the light emitting unit according to a phase sequence. The light emitting unit sends a plurality of different signals after receiving the first color control signal. C _n light color, the light color there are n C _n, and n is a parameter related to resolution, and determines whether or not the external switch is turned off, when the light emitting unit emits a light color C _i, if the microprocessor The unit judges that the external switch is turned off, and writes the record data in the rewritable read-only memory as the second working mode and a pair of light color data corresponding to the first color control signal, where C _i is i-th timing emitted light color, the first color and the light color data control signal corresponding to the light color C _i; and step S6: If the log data for the second mode of operation, the microprocessor unit The light color data in the record data is read to output the lighting white light control signal or the first color control signal. The light emitting unit receives the lighting white light control signal or the first color control signal and emits the corresponding lighting white light. Or the light color C _i . According to the light color control method of the lighting device as described in the first item of the patent application scope, step S3 further includes the following steps: Step S3A: If the external switch is turned off within the first interval, the microprocessor unit is reset. The record data stored in the rewritable read-only memory is set, and the record data is written in the rewritable read-only memory as the first working mode and a pair of light color data that should illuminate a white light control signal. A lighting device includes: a rectifier electrically connected to an external switch that decides whether to obtain an external power from a mains, and receives the external power and rectifies it into a high voltage direct current; a power conversion circuit electrically connected to the rectifier After receiving the high-voltage direct current, it can start and perform a power conversion on its own to output a driving voltage and a working voltage; a light-emitting unit including a plurality of light-emitting diodes, the light-emitting unit is electrically connected to the power conversion circuit, and Receiving the driving voltage to drive the light-emitting diode; and a microprocessor unit having a rewritable read-only memory, which is electrically connected to the power conversion circuit and receives the operating voltage, and is started and executes an initial program Then, a low-brightness white light signal is sent at a first interval and it is determined whether the external switch is turned off. If yes, then reset a record data in the rewritable read-only memory, and if not, read the After erasing the log data stored in the read-only memory, a work mode recognition process is performed. The work mode recognition process is The record data stored in the rewritable read-only memory is judged to be a first work mode or a second work mode. If the record data is the first work mode, a white light control signal is output at a second interval. To the light-emitting unit, so that the light-emitting unit emits a white illumination light, and further determine whether the external switch is turned off within the second interval time, and if yes, write the record in the rewritable read-only memory The data is the second working mode and a pair of light color data that should illuminate the white light control signal. If not, the microprocessor unit sends a plurality of first color control signals to the light emitting unit according to a phase sequence, and the light emitting unit After receiving the first color control 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 it is determined whether the external switch is turned off. when the unit emits a light color C _i, if it is judged that the external switch has been turned off, to the erasable read-only memory for the log data written in the second operating mode and a color corresponding to the first control information Light color information, wherein, C _i represents the i th color light emitted by a timing and control signal corresponding to the first color data and the light color of the light color C corresponding to _i, if the log data for the first The two working modes output the illumination white light control signal or the first color control signal to the light emitting unit according to the light color data in the record data and emit the corresponding illumination white light or the light color C _i . The lighting device according to item 3 of the scope of patent application, further comprising an internal power supply unit electrically connected to the microprocessor unit. The internal power supply unit provides an internal power source to the microcomputer after the external switch is turned off. The processor unit functions normally during the writing of the rewritable read-only memory. The lighting device according to item 4 of the scope of patent application, wherein the internal power supply unit is a capacitor. The lighting device according to item 3 of the scope of patent application, wherein the rewritable read-only memory is an electronic erasable rewritable unique memory. The lighting device according to item 3 of the scope of patent application, wherein the light-emitting diode is selected from a red light-emitting diode, a green light-emitting diode, a blue light-emitting diode, and a white light-emitting diode. A group of people. The lighting device according to item 3 of the scope of patent application, further comprising a constant current unit electrically connected between the light emitting diode and the microprocessor unit.