TW201304605A - Dimming method with memory feature, dimmable lamp with memory feature and dimmable driving circuit - Google Patents

Abstract

A dimmable driving circuit includes: an ON/OFF switch adapted for receiving an AC power and switchable between an ON state and an OFF state; an AC-to-DC converting unit receiving the AC power from the ON/OFF switch and converting the AC power into a DC power when the ON/OFF switch is in the ON state; a current regulating unit adapted for being coupled electrically to a light emitting module; and a micro processing unit storing recorded dimming data and a plurality of dimming settings corresponding to a plurality of dimming setting values respectively. The recorded dimming data includes a dimming setting and a memory flag. When the ON/OFF switch is in the ON state, the micro processing unit controls the current regulating unit based on the dimming setting value corresponding to the dimming setting of the recorded dimming data to adjust brightness and color temperature of the light emitting module upon determination that the memory flag is in a set state.

Description

Memory dimming method, memory type dimming lamp and dimming driving circuit

The invention relates to a method, a lamp and a circuit, in particular to a memory dimming method, a memory dimming lamp and a dimming driving circuit.

As shown in FIG. 1 , it is a conventional dimming lamp, which is suitable for being electrically connected to an AC power source for providing an AC power, and is operable to perform multi-stage dimming, and the dimming lamp 1 includes a light emitting diode ( LED) module 10 and a dimming drive circuit 11.

The LED module 10 is controlled to change brightness and color temperature to define each segment of dimming, and includes a warm color illumination unit 101 and a cool color illumination unit 102. Each of the illumination units 101 and 102 has multiple illuminations. a polar body (not shown), and the brightness thereof is proportional to the magnitude of a current received, and the warm color light-emitting unit 101 and the cool color light-emitting unit 102 mix different color temperatures according to a current ratio between each other, and each The ratio of currents in a dimming is different.

The dimming drive circuit 11 includes a conventional on/off switch 110, an AC/DC conversion unit 111, a control unit 112, and a current stabilizing unit 114.

The conventional on/off switch 110 is electrically connected to the AC power source to receive the AC power, and is switched between a power-on state or a power-off state to transmit or not transmit the AC power under the control of a user.

The AC/DC conversion unit 111 is electrically connected to the on/off switch 110, and when the on/off switch 110 is in an energized state, the AC/DC conversion unit 111 receives the AC power from the on/off switch 110, and accordingly AC/DC conversion to get DC power.

The control unit 112 is electrically connected to the AC/DC conversion unit 111 and stores a current setting value of each stage of dimming, and the control unit 112 includes a counter 113 and a capacitor C. The capacitor C is charged by the DC power when the on/off switch 110 is in an energized state, and is discharged to supply the counter 113 when the on/off switch 110 is in a power off state. When the counter 113 is powered by the capacitor C, the number of segments of the dimming is counted according to the switching of the on/off switch 110 from the power-off state to the energized state. When the power-off switch 110 is in an energized state and is powered by the DC power, the control unit 112 outputs a corresponding current set value according to the dimming setting counted by the counter 113. Therefore, the user switches the power-off switch to the power-off state by the power-on state, and then turns the power-off switch in an interval less than a critical time (correlated with the discharge time of the capacitor C). 110 can be changed from the power-off state to the power-on state, and the dimming setting can be changed.

The steady current unit 114 is electrically connected between the AC/DC converting unit 111, the control unit 112, and the warm and cool color light emitting units 101 and 102, and is powered by the DC power when the power on/off switch 110 is in an energized state. The current stabilizing unit 114 adjusts the current magnitudes output to the warm and cool color light emitting units 101 and 102 according to the current setting values output by the control unit 112.

However, conventional dimming fixtures 1 include the following disadvantages:

1. If the user sets this time to the third stage dimming, when the next time to use, although it is expected to be the third stage dimming, it must be adjusted from the first stage dimming, resulting in wasted time and excessive switching. The number of times will result in a reduction in the service life of the on/off switch 110.

2. When the power-off switch 110 is in the power-off state, it is necessary to additionally supply the capacitor C to the counter 113 to maintain the count value, resulting in an increase in cost.

Accordingly, a first object of the present invention is to provide a memory dimming method that solves the above problems.

The memory dimming method is applicable to a memory type dimming lamp capable of emitting different brightnesses and different color temperatures. The memory type dimming lamp has a non-volatile memory module, and the non-volatile memory module stores a record dimming data. And a plurality of dimming settings corresponding to the plurality of dimming settings, the recording dimming data includes a dimming setting and a memory flag, and the memory flag can be in a set state or an unset state, the setting The status indication is simultaneously stored in the record dimming data, the dimming setting is the dimming setting specified by the user, and the memory dimming method comprises the following steps:

(A) starting timing after selecting one of the plurality of dimming settings to obtain a timing; and

(B) when the timing time is greater than a critical time value, the memory flag in the record dimming data is modified from the unset state to a memory flag of the set state, and the selected dimming setting is written The record is dimmed.

A second object of the present invention is to provide a memory type dimming luminaire.

The memory type dimming lamp is electrically connected to an alternating current power source for providing an alternating current power, and the memory type dimming lamp comprises: a light emitting module, controlled to emit light of different brightness and color temperature; and a dimming driving The circuit includes: a power-off switch electrically connected to the alternating current power source to receive the alternating current power, and controlled to switch between a power-on state or a power-off state to transmit or not transmit the alternating current power; The unit is electrically connected to the on/off switch, and when the on/off switch is in an energized state, the AC/DC conversion unit receives the AC power from the on/off switch, and performs AC/DC conversion to obtain a DC flow. a micro processing unit electrically connected to the AC/DC conversion unit and the current stabilizing unit and having a non-volatile memory module, wherein the non-volatile memory module stores a record dimming data and a plurality of dimming settings respectively Corresponding multiple dimming settings, the record dimming data includes a dimming setting and a memory flag, and the memory flag can be used to change between a set state or an unset state. Whether to maintain the dimming setting, when the on/off switch is in the power-on state, the micro processing unit determines whether the memory flag is in the set state to indicate maintaining the dimming setting, and if so, the micro processing unit according to the adjustment The light setting reads a corresponding dimming setting value from the non-volatile memory module; and a steady current unit electrically connected between the lighting module, the AC/DC converting unit and the micro processing unit, and when When the power-off switch is in an energized state and is powered by the DC power, the current stabilizing unit receives the dimming setting value of the dimming setting from the micro processing unit, and adjusts the brightness and color temperature of the lighting module accordingly.

A third object of the present invention is to provide a dimming drive circuit.

The dimming driving circuit is adapted to control a lighting module, and the dimming driving circuit comprises: an on-off power switch electrically connected to the alternating current power source to receive the alternating current power, and controlled to switch to a power-on state or a The AC power is transmitted or not transmitted between the power-off states; an AC/DC conversion unit is electrically connected to the on/off switch, and when the on/off switch is in an energized state, the AC/DC conversion unit is turned on and off The electric switch receives the AC power and performs AC/DC conversion to obtain DC power; a micro processing unit is electrically connected to the AC/DC conversion unit and the current stabilizing unit and has a non-volatile memory module, the non-volatile The memory module stores a plurality of dimming settings corresponding to the recording dimming data and the plurality of dimming settings, the recording dimming data comprising a dimming setting and a memory flag, wherein the memory flag is The setting state or an unset state change is used to indicate whether to maintain the dimming setting, and when the on/off switch is in the power-on state, the micro processing unit determines whether the memory flag is in Setting a state to indicate maintaining the dimming setting, and if so, the micro processing unit reads a corresponding dimming setting value from the non-volatile memory module according to the dimming setting; and a steady current unit electrically connected to the lighting The dimming unit receives the dimming setting dimming from the micro processing unit when the DC power is received between the module, the AC/DC converting unit, and the micro processing unit. Set the value and adjust the brightness and color temperature of the lighting module accordingly.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

As shown in FIG. 2, a preferred embodiment of the memory type dimming lamp of the present invention is adapted to be electrically connected to an AC power source for providing an AC power, and is operable to perform multi-stage dimming, and the memory type dimming lamp includes a The light emitting module 3 and a dimming driving circuit 4.

The illuminating module 3 is controlled to emit light of different brightnesses and different color temperatures, and includes a first illuminating unit 31 and a second illuminating unit 32 having different illuminating colors. In this embodiment, the two illuminating units 31, 32 is a warm color light emitting unit and a cool color light emitting unit, respectively, and each of the light emitting units 31, 32 has a plurality of light emitting diodes (not shown), and the brightness thereof is proportional to the magnitude of a current received, and The warm color light-emitting unit and the cool color light-emitting unit mix different color temperatures according to a current ratio between each other, and the current ratio and current magnitude of each of the dimming lights are different, and different color temperatures and brightness are generated.

The dimming drive circuit 4 includes a conventional on/off switch 40, an AC/DC conversion unit 41, a timer 44, a micro processing unit (MCU) 42, and a current stabilizing unit 43.

The conventional on/off switch 40 is electrically connected to the AC power source to receive the AC power, and is switched between a power-on state or a power-off state to transmit or not transmit the AC power under the control of a user.

The AC/DC conversion unit 41 is electrically connected to the on/off switch 40, and when the on/off switch 40 is in an energized state, the AC/DC conversion unit 41 receives the AC power from the on/off switch 40, and accordingly Perform AC/DC conversion to obtain DC power.

The micro-processing unit 42 includes a non-volatile memory module M. The non-volatile memory module M can permanently store a plurality of dimming settings corresponding to a record dimming data and a plurality of dimming settings in an unpowered state. The record dimming data includes a dimming setting and a memory flag, and the memory flag can be changed between a set state or an unset state to indicate whether to maintain the dimming setting. In this embodiment, when the memory flag is in the set state, it is set to the high level logic 1 to indicate that the dimming setting is maintained, and vice versa, if the memory flag is in the unset state, it is set to the low level. Bit Logic 0 indicates that the dimming setting is not maintained.

The current stabilizing unit 43 is electrically connected between the light emitting module 3, the AC/DC converting unit 41 and the micro processing unit 42, and when the power switch is in an energized state and is powered by the DC power, the stable The flow unit 43 adjusts the brightness and color temperature of the light emitting module 3 according to the dimming setting value output by the micro processing unit 42. Further, the dimming setting value includes a current magnitude, and the current stabilizing unit 43 is electrically connected. The brightness and color temperature are adjusted in the warm and cool color light-emitting unit by varying the magnitude of the current output to the warm and cool color light-emitting unit.

The timer 44 is electrically coupled to the microprocessor unit 42.

As shown in FIG. 3, the first embodiment of the power-off switch 40 has a plurality of buttons 402, 403, and 404 (only three are drawn in this embodiment for convenience of explanation), and each Buttons 402, 403, 404 correspond to different dimming settings, respectively. In this way, the user can directly press one of the buttons 402, 403, and 404 to directly complete the selection operation of the dimming setting.

The memory type dimming lamp performs a memory dimming method. As shown in FIG. 4, the first embodiment of the memory dimming method includes the following steps: Step 50: Select one of the plurality of dimming settings to start Timing to get a time.

Step 51: Determine whether the timing time is greater than a critical time value, and if yes, proceed to step 52, otherwise, return to step 50.

Step 52: When the timing time is greater than the threshold time value, the memory flag in the record dimming data is modified from the unset state to a memory flag of the set state, and the selected dimming setting is written. The record is dimmed.

Step 53: Read the record dimming data.

Step 54: Determine whether the memory flag in the record dimming data is in the set state, and if yes, proceed to step 55; otherwise, proceed to step 5A.

Step 55: When it is determined that the memory flag in the record dimming data is in the set state, the corresponding dimming setting value is read according to the selected dimming setting, and the dimming setting value is set according to the dimming setting. Adjusting the brightness and color temperature of the light-emitting module 3 of the memory type dimming lamp.

Step 56: Adjust the brightness and color temperature of the light-emitting module 3 of the memory-type dimming lamp according to another dimming setting.

As shown in FIG. 5, the second embodiment of the power-off switch 40 has a button 401, and the memory-type dimming lamp performs a memory dimming method, as shown in FIG. The second embodiment of the optical method includes the following steps: Step 22: The micro-processing unit 42 is used to read the record dimming data from the non-volatile memory module M.

Step 23: The micro processing unit 42 determines whether the memory flag is in the set state to indicate that the dimming setting is maintained. If yes, the process proceeds to step 241; otherwise, the process proceeds to step 2A1.

Step 241: The memory flag is modified to an unset state by the micro processing unit 42.

Step 242: The micro-processing unit 42 reads a corresponding dimming setting value from the non-volatile memory module M according to the dimming setting, and outputs the dimming setting dimming setting value to the steady-current unit 43. The current stabilization unit 43 adjusts the brightness and color temperature of the light-emitting module 43 and proceeds to step 25.

Step 2A1: The micro-processing unit 42 reads a corresponding dimming setting value from the non-volatile memory module M according to the next dimming setting of the dimming setting, and outputs the corresponding dimming setting value to the steady-current unit 43 so that The steady flow unit 43 adjusts the brightness and color temperature of the light-emitting module, and proceeds to step 25.

Step 25: The micro-processing unit 42 is used to store the current dimming setting and the memory flag in the unset state to the non-volatile memory module M to update the recording dimming data.

Step 26: Start timing with the timer 44 to obtain a timing time.

Step 27: The micro-processing unit 42 is used to modify the memory flag of the unset state to the memory flag of the set state when the timing time is greater than a threshold time value, and store the memory flag in the non-volatile memory module M. Therefore, if the user switches the power-off switch 40 from the power-on state to the power-off state (indicating that the user wants to change the dimming setting) when the time is not greater than the threshold time, step 27 will not be Executing, the memory flag stored by the non-volatile memory module M is in a non-set state, and the user switches the power-off switch 40 from the power-on state to the off state if the time is greater than the threshold time value. The electrical state (indicating that the user does not intend to change the dimming setting), step 27 will be performed such that the memory flag stored by the non-volatile memory module M is in a set state.

In application, it is assumed that there are four dimming settings in the embodiment, which are an initial segment, a first segment, a second segment, and a third segment, respectively, and are represented by 0, 1, 2, and 3, respectively, and are just shipped from the factory. The dimming setting and the memory flag are respectively (0, 0). Therefore, when the user switches the on/off switch 40 from the power-off state to the power-on state, the microprocessor 42 starts to operate, in step 23 Determining that the memory flag is in an unset state, and proceeding to step 2A1, adding a dimming setting, and obtaining the dimming setting and the memory flag are respectively (1, 0), and then in step 25 (1) , 0) stored in the memory module M, and then to the step 26, if the user switches the power-off switch 40 from the power-on state to the power-off state when the timing time is less than the threshold time value, it indicates that the use The user does not like this dimming setting, the microprocessor 42 stops working; the user can repeat the above process to increase the dimming setting until the dimming setting and the memory flag are (3, 0) respectively, to step 26 If the user times the timeout value is greater than the critical time value, the power-off switch 40 is When the electrical state is switched to the power-off state, it means that the user likes the dimming setting, and the microprocessor 42 sets the memory flag according to step 27 and stores it in the memory module M; when it is to be used next time, the microprocessor Step 42 reads out (3, 1) from the memory module M according to step 22, and determines that the memory flag is set according to step 23, and can start directly from the third stage dimming, so if the user sets this time For the third stage dimming, by setting the memory flag, when the next time to use, it can start directly from the third stage dimming, which can save the dimming time and reduce the number of switching times compared with the prior art. The electric switch 40 has a long service life.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

22~28. . . Dimming step

50~56. . . Dimming step

3. . . Light module

31. . . First lighting unit

32. . . Second lighting unit

4. . . Dimming drive circuit

40. . . On/off switch

401~404. . . Button

41. . . AC/DC converter unit

42. . . Micro processing unit

M. . . Non-volatile memory module

43. . . Steady flow unit

44. . . Timer

Figure 1 is a circuit diagram of a conventional dimming luminaire;

2 is a circuit diagram of a preferred embodiment of the memory type dimming lamp of the present invention;

Figure 3 is a schematic view showing a first embodiment of the on/off switch of the preferred embodiment;

4 is a flow chart of a first embodiment of a memory dimming method performed by the preferred embodiment;

Figure 5 is a schematic view showing a second embodiment of the on/off switch of the preferred embodiment; and

Figure 6 is a flow chart of a second embodiment of the memory dimming method.

3. . . Light module

4. . . Dimming drive circuit

40. . . On/off switch

41. . . AC/DC converter unit

42. . . Micro processing unit

43. . . Steady flow unit

Claims (8)

A memory dimming method is applicable to a memory type dimming lamp capable of emitting different brightnesses and different color temperatures. The memory type dimming lamp has a non-volatile memory module, and the non-volatile memory module stores a record dimming data. And a plurality of dimming settings corresponding to the plurality of dimming settings, the recording dimming data includes a dimming setting and a memory flag, and the memory flag can be in a set state or an unset state, the setting The status indicates that the dimming setting is simultaneously stored in the recording dimming data, and the dimming setting is used by the user, and the memory dimming method comprises the following steps: (A) selecting a plurality of the dimming settings a timing is started afterwards to obtain a timing time; and (B) when the timing time is greater than a critical time value, the memory flag in the recording dimming data is modified from the unset state to a memory flag of the set state. And the selected dimming setting is written into the record dimming data. According to the memory dimming method of claim 1, further comprising the steps of: (C) reading the record dimming data; and (D) determining that the memory flag in the record dimming data is the setting In the state, the corresponding dimming setting value is read according to the selected dimming setting, and the brightness and color temperature of the memory dimming lamp are adjusted according to the dimming setting value of the dimming setting. A memory type dimming lamp electrically connected to an AC power source for providing an AC power, and the memory type dimming lamp comprises: a light emitting module, controlled to emit light of different brightness and color temperature; and a dimming drive The circuit includes: a power-off switch electrically connected to the alternating current power source to receive the alternating current power, and controlled to switch between a power-on state or a power-off state to transmit or not transmit the alternating current power; The unit is electrically connected to the on/off switch, and when the on/off switch is in an energized state, the AC/DC conversion unit receives the AC power from the on/off switch, and performs AC/DC conversion to obtain a DC flow. a micro processing unit electrically connected to the AC/DC conversion unit and the current stabilizing unit and having a non-volatile memory module, wherein the non-volatile memory module stores a record dimming data and a plurality of dimming settings respectively Corresponding multiple dimming settings, the record dimming data includes a dimming setting and a memory flag, and the memory flag can be changed between a set state or an unset state. Instructing whether to maintain the dimming setting, when the on/off switch is in an energized state, the micro processing unit determines whether the memory flag is in the set state to indicate maintaining the dimming setting, and if so, the micro processing unit according to the adjustment The light setting reads a corresponding dimming setting value from the non-volatile memory module; and a steady current unit electrically connected between the lighting module, the AC/DC converting unit and the micro processing unit, and when When the power-off switch is in an energized state and is powered by the DC power, the current stabilizing unit receives the dimming setting value of the dimming setting from the micro processing unit, and adjusts the brightness and color temperature of the lighting module accordingly. The memory type dimming lamp of claim 3, wherein the light emitting module comprises a first light emitting unit and a second light emitting unit having different light emitting colors. The memory type dimming lamp of claim 4, wherein the two light emitting units are a warm color light emitting unit and a cool color light emitting unit, and each of the light emitting units has a plurality of light emitting diodes. The memory type dimming lamp according to claim 5, further comprising a timer electrically connected to the micro processing unit, and the micro processing unit further sets the dimming setting and the memory in the unset state The flag is stored in the non-volatile memory module; and the timer starts counting to obtain a timing time; then, the micro processing unit stores the unset state memory flag when the timing time is greater than a critical time value The memory flag is changed to the set state and stored in the non-volatile memory module. A dimming driving circuit is adapted to control a lighting module, and the dimming driving circuit comprises: an on-off power switch electrically connected to the alternating current power source to receive the alternating current power, and controlled to be switched to a power-on state or a The AC power is transmitted or not transmitted between the power-off states; an AC/DC conversion unit is electrically connected to the on/off switch, and when the on/off switch is in an energized state, the AC/DC conversion unit is turned on and off The electric switch receives the AC power and performs AC/DC conversion to obtain DC power; a micro processing unit is electrically connected to the AC/DC conversion unit and the current stabilizing unit and has a non-volatile memory module, the non-volatile The memory module stores a plurality of dimming settings corresponding to the recording dimming data and the plurality of dimming settings, the recording dimming data comprising a dimming setting and a memory flag, wherein the memory flag is The setting state or an unset state change is used to indicate whether to maintain the dimming setting, and when the on/off switch is in the power-on state, the micro processing unit determines whether the memory flag is at Setting the state to indicate maintaining the dimming setting, and if so, the micro processing unit reads a corresponding dimming setting value from the non-volatile memory module according to the dimming setting; and a steady current unit electrically connected to the Between the light-emitting module, the AC-DC conversion unit, and the micro-processing unit, and receiving the DC power when the power-off switch is in an energized state, the current stabilization unit receives the adjustment of the dimming setting from the micro processing unit. The light setting value is used to adjust the brightness and color temperature of the lighting module. The dimming driving circuit of claim 7, further comprising a timer electrically connected to the micro processing unit, wherein: the micro processing unit further sets the dimming setting and the memory flag in the unset state The identifier is stored in the non-volatile memory module; and the timer starts counting to obtain a timing time; then, the micro processing unit modifies the memory flag of the unset state when the timing time is greater than a critical time value A memory flag for setting the state and storing it to the non-volatile memory module.