TW201146087A - Dimmable circuit applicable for LED lighting device and control method thereof - Google Patents

Dimmable circuit applicable for LED lighting device and control method thereof Download PDF

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TW201146087A
TW201146087A TW99146213A TW99146213A TW201146087A TW 201146087 A TW201146087 A TW 201146087A TW 99146213 A TW99146213 A TW 99146213A TW 99146213 A TW99146213 A TW 99146213A TW 201146087 A TW201146087 A TW 201146087A
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circuit
phase angle
phase
signal
step step
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TW99146213A
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TWI434616B (en
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Feng-Min Shen
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Jd Tek Jim Dandy Technology Corp
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Abstract

A dimmable circuit applicable for LED lighting device and control method thereof is disclosed in the embodiments of the present invention. The dimmable circuit is applicable for controlling at least a LED element and includes a rectifying device, a bleeding circuit, a phase angle detecting circuit, a current control circuit and a processor. The phase angle detecting circuit couples to the processor. The processor generates a modulating signal according to the output signal of the phase angel detector to adjust the current of a current control circuit coupled to the LED element. Thus, the processor may control the brightness of the LED element according to user's demands.

Description

201146087 、發明說明： 【發明所屬之技術領域】 本發明係關於調光電路及控制方法，特別關於一種相 位調光器使用之調光電路及控制方法。 【先前技術】 相位調光器(TRIAC Dimmer)應用於家用傳統鎢絲燈泡由來已久， 其可以藉由相位(phase)的調整來控制輸出功率(Power)的大小，因而達 到調整燈泡本身的亮度輸出大小，相位調光器之三端雙向可控矽開關 元件(Triode for Alternating Current ’ TRIAC)(以下皆用 TRICA 簡稱)的工 作特性是當其閘極(Gate)被激發(Triggered)，要讓此元件呈導通 (conductive)的情況，則需要一導通電流來使TRIAC維持導通，此電流 稱為栓鎖電流Ilatch，接著當TRIAC導通後便需要一保持電流Ih(>|d來使 TRIAC持續導通;以上條件必須滿足，TRIAC才可工作於穩定的條件 中〇 基於相位調光器之TRIAC應用電路必須隨時使電流的大小維持在 栓鎖電流Ilatch和保持電流Ihold兩種條件電流，所以在做系統設 計時往往必須設計-種形式之負統來提供“和，而已往的傳 統鎢絲燈泡因為本身可視為一種線性負載，所以可以滿足I!atch和Ihold電 流的產生，讓系統處於穩態工作情況。 然而，對於發光二極體(LED)照明設備來講，其LED負載的等效 電路並非是線性負載，所讀相位調光H來說並不能直接的有效的提 供Wh和IMd電流’必須藉由其他外部電路來達到【_和u的產生。 201146087 一般來說，使用外部洩放(Bleeder)電路作為上述相位調光器負載的 設計是最簡易的一種方式，但是設計外部洩放(Bleeder)電路往往會有 下面至少一問題產生： a. 電源的效率降低，功耗增加 b. 必須依照不同相位(TRIAC)調光器特性來調整ihdd電流 c. 使用線性負載來提供Ilatch和Ih()ld會造成系統熱溫升問題 d. 動態負載線路設計複雜，增加系統成本 另外，在不同相位(TRIAC)調光器之間，其啟始的導通角度也會因 不同調光器之間的設計而有所不同，這差異是因為TRJAC調光器内部 閘極(Gate)控制電路不同設計所致，此差異會在功率的輸出表現顯現 出來，所以設計者在發光二極體(LED)的控制線路上會面臨諸如下面 至少一問題： a. TRIAC本身正負半波導通角度不同 b. 不同TRIAC相位調光器的起始導通角度不同 c·閘極控制電路不易線性化，造成LED控制線路不易同步穩態調光 d· LED端的調光曲線，依照不同需求程式化困難度高 e_避免因TRIAC調光器不穩定的工作，讓LED不正常閃爍 201146087 【發明内容】 以上所_㈣可能是在三端雙向可㈣卿元件邮扣加BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dimming circuit and a control method, and more particularly to a dimming circuit and a control method for use in a phase dimmer. [Prior Art] The phase dimmer (TRIAC Dimmer) has been used in traditional tungsten filament lamps for a long time. It can adjust the output power (Power) by phase adjustment, thus adjusting the brightness of the bulb itself. The output size, phase dimmer's Triode for Alternating Current 'TRIAC (hereinafter referred to as TRICA for short) works when its gate is triggered (Triggered). When the component is conductive, a conduction current is needed to keep the TRIAC on. This current is called the latching current Ilatch. Then, when the TRIAC is turned on, a holding current Ih (>|d is needed to keep the TRIAC continuous. Conduction; the above conditions must be met, TRIAC can work in stable conditions. TRIAC application circuit based on phase dimmer must maintain the current current at the latch current Ilatch and hold current Ihold at any time, so do When designing a system, it is often necessary to design a form of the system to provide "and, while the conventional tungsten filament bulb itself can be regarded as a linear load, so To meet the I!atch and Ihold current generation, the system is in steady state operation. However, for LED lighting equipment, the equivalent circuit of the LED load is not a linear load, the read phase adjustment Light H does not directly and effectively provide Wh and IMd currents. 'The generation of [_ and u must be achieved by other external circuits. 201146087 In general, an external bleeder (Bleeder) circuit is used as the above phase dimmer. The design of the load is the easiest way, but designing an external bleeder (Bleeder) circuit often has at least one of the following problems: a. Reduced power efficiency, increased power consumption b. Must be in accordance with different phase (TRIAC) dimmers Features to adjust the ihdd current c. Using a linear load to provide Ilatch and Ih() ld will cause the system to heat up. d. Dynamic load line design is complex, increasing system cost. In addition, between different phase (TRIAC) dimmers, The initial conduction angle will also vary depending on the design of the different dimmers. This difference is due to the different design of the internal gate control circuit of the TRJAC dimmer. The output of the power will appear in the output of the power, so the designer will face at least one of the following problems on the control line of the LED (a): a. The TRIAC itself has different positive and negative half-waveguide angles. b. Different TRIAC phase dimming The initial conduction angle of the device is different. The c-gate control circuit is not easy to linearize, which makes it difficult for the LED control circuit to synchronize the dimming curve of the steady-state dimming d·LED end. It is difficult to program according to different requirements. e_ Avoid TRIAC dimming Unstable work, let the LED not flash properly 201146087 [Inventive content] The above _ (four) may be in the three-terminal two-way (four) Qing components mail plus

Altematmg Current ’ TRIAC)調光電路時會面臨到的挑戰，當然本發明並 不限於解诀上述問題，且不限於解決三端雙向可控石夕開關元件之問 題，其他可以卿調整相位來達卿整功率輸出的開關元件亦落於 本發明之範疇。 本發明之目的之-侧料料之贿理_，以健的方式改變微 處理器之運作方式’而可配合各種市面現有的·電路及/或相位偵測 電路及/或LED f·織路麵作，達細整LED元件亮度之功效。 本發明之目狀-係_ —已燒雜式紅微處理_，配合市面 現有的茂放電路及/或相⑽測電路及域LED電流控制電路運作達 成調整LED元件亮度之功效。 本發明之目的之-係利用預設之微處理器，控制一預設之触電 路及/或相位偵測電路及/或-預設之LED t流控制電路達成調整led 元件亮度之功效。 本發明之目狀-係·-調光電路，娜制者之需求，調整 LED元件之亮度。 本發明之目的之一係利用一頻率調變控制方法，控制一預設之 洩放電路達成改善現有洩放電路效率不佳之方法。 本發明之目的之-係利用-同步偵測相位方法，配合放電 路，控制一預設之相位偵測電路，取得調光器相位角之方法。 本發明之實施例提出有效的調光電路與控制方法。其中，調光電 路可包含触(Blee㈣電紐齡構、TRUC縣_之她⑽_ 201146087 angle)偵測方法和相位角濾波器⑽挪angie fiiter)、調光曲線轉換模組 (Dimming curve translator) '脈衝寬度調變(pwjyQ輪出電路架構等方 法。 本發坍實施例之調光電路與控制方法之工作方法，可以由微處理 器產生驅動信號給洩放電路，然後經由相位角偵測電路取得相位角參 數，且經由微處理器内部相位角濾波器和調光曲線轉換模組計算輸出 參數’再經由PWM輸出模組輸出調變信號給LED電流控制電路。進 而達成可以依據使用者之需求正確調整(改變)LED的亮度。 本發明之-實施例提供了-種調光電路，適發光二極體照明 設備，包含有一電路、一相蝴光器、一相位偵測電路一脈衝 寬度調變輸出電路、以及一微控器。該洩放電路用以作為一虛負載。 相位調光器係依據使用者之調整相位調光器之調整量產生相對應該 調整量大小之信號波形。相位偵測電路係偵測信號波形之相位角。脈 衝寬度調變輸出電路，係用以產生-脈衝寬度信號，以驅動該發光二 極體照明设備。而微控器係輕接相位偵測電路，當信號波形之相位角 度不變時，轉雜祕信舰形之開啟頻率，且該脈衝寬度信號之 脈衝寬度保持不變’使該發光二極體照明設備之光線保持不變；當相 位角改變時，增械降健触電職號波形之開啟鱗並產生一 調整信號，且脈衝紐調變輸A電路依據赃錢，產生彳目對應調整 k號之脈衝寬度’以相對應地改變發光二極體照明設備之光線真产。 本發明之-實施例提供了—種微㈣，包含—相位肖偵測單元、 -相位角濾波器、-計時器、—沒放電路驅動單元、—調光曲線轉換 201146087 模組、-脈衝寬度調變輸出電路、以及—控制邏輯。該相位角偵測單 元係偵測-相位_電路提供之信號波形之相位角。而相位角滤波器 係用以過滤相位角之雜訊。計時器係用以產生—與敝電路和相位谓 測電路同步之時脈.1放電路驅動單元制以依據—指令產生驅動訊 號，以控織放電路信驗形之·鮮。調光曲線轉換模組係用以 提供-調光鱗。脈衝寬度調變輸出電路侧以產生—脈衝寬度調變Altematmg Current ' TRIAC) challenges when dimming the circuit. Of course, the present invention is not limited to solving the above problems, and is not limited to solving the problem of the three-terminal bidirectional controllable switch element, and other can adjust the phase to Daqing. Switching elements of a full power output are also within the scope of the invention. The purpose of the present invention is to control the operation mode of the microprocessor in a robust manner, and to cooperate with various existing circuit and/or phase detecting circuits and/or LED f·woven road surfaces. Work, to achieve the effect of the brightness of the LED components. The object of the present invention is a method for adjusting the brightness of an LED component by using the existing micro-discharge circuit and/or phase (10) measurement circuit and domain LED current control circuit. The purpose of the present invention is to control a preset touch circuit and/or phase detection circuit and/or a preset LED t flow control circuit to achieve the effect of adjusting the brightness of the LED element by using a preset microprocessor. The object of the present invention is a dimming circuit that adjusts the brightness of the LED elements. One of the objects of the present invention is to use a frequency modulation control method to control a predetermined bleeder circuit to achieve a method of improving the efficiency of the existing bleeder circuit. The object of the present invention is to obtain a phase angle of a dimmer by using a synchronous phase detection method, a discharge path, and a preset phase detection circuit. Embodiments of the present invention provide an effective dimming circuit and control method. Wherein, the dimming circuit may include a touch (Blee (four) electric neon structure, TRUC county _ her (10) _ 201146087 angle) detection method and phase angle filter (10) angie fiiter), dimming curve translator (Dimming curve translator) ' Pulse width modulation (pwjyQ wheel circuit architecture and the like. The working method of the dimming circuit and the control method of the embodiment of the present invention can generate a driving signal to the bleeder circuit by the microprocessor, and then obtain the phase angle detecting circuit Phase angle parameter, and the output parameter is calculated by the internal phase angle filter and the dimming curve conversion module of the microprocessor, and then the modulated signal is output to the LED current control circuit via the PWM output module, thereby achieving the correctness according to the user's needs. Adjusting (changing) the brightness of the LED. The embodiment of the present invention provides a dimming circuit, a suitable light emitting diode lighting device, comprising a circuit, a phase butterfly, a phase detecting circuit, and a pulse width modulation The output circuit and a micro controller. The bleeder circuit is used as a virtual load. The phase dimmer is generated according to the adjustment amount of the user's adjusted phase dimmer. The signal waveform corresponding to the magnitude of the adjustment should be adjusted. The phase detection circuit detects the phase angle of the signal waveform. The pulse width modulation output circuit is used to generate a pulse width signal to drive the LED illumination device. The micro controller is connected to the phase detection circuit. When the phase angle of the signal waveform is constant, the frequency of the opening of the secret letter is changed, and the pulse width of the pulse width signal remains unchanged. The light of the device remains unchanged; when the phase angle changes, the opening scale of the vibration-reducing electric shock signal waveform is generated and an adjustment signal is generated, and the pulse-to-change transmission A circuit is based on the money, and the corresponding adjustment k number is generated. The pulse width 'is correspondingly changed the light of the light-emitting diode illumination device. The embodiment of the invention provides a micro (four), including - phase reflection detection unit, - phase angle filter, - timer , - no circuit driver unit, - dimming curve conversion 201146087 module, - pulse width modulation output circuit, and - control logic. The phase angle detection unit is provided by the detection - phase_ circuit The phase angle of the signal waveform, and the phase angle filter is used to filter the noise of the phase angle. The timer is used to generate the clock synchronized with the chirp circuit and the phase predicate circuit. The command generates a driving signal to control the weaving and placing circuit signal. The dimming curve conversion module is used to provide a dimming scale. The pulse width modulation output circuit side is generated to generate a pulse width modulation.

信號，以控制-發光二極體照明賴之光線亮度。而控制邏輯，係配 合該計時n輕來運作，減相㈣，依據相㈣來決定如何產生控 制’姐電路驅鮮元之指令與如何控制脈敢度調變輸出電路產生脈 衝寬度調變信號。 尽贫明之一貫施例提供了 π从电硲之頻罕調變控制方 法包含有下列步驟·百先，提供一對時信號，依據相位偵測電路4 相位角信號，以判斷提高或降低對時信號時間基準並比較是否上溢 若上溢則觸賴放電路；令該相位角與一轉換曲線相關，並加以計算 依據該計算絲產生㈣應的脈賊度輕工作職，啸制發光_ 極體照明設備㈣之亮度；以及判斷目前_是否大於先前相位 角，若大於，則降低對時信號時間基準；若小於則提高對時信_ 基準。 本發明之-實關提供了—鑛控器細相㈣方法，包含有 列步驟：判斷相位角_之運作時脈是否與茂放電路之觸發伴同 步，若同_糊目前她你概來的蝴 若是，對韻進來_㈣進行紐動作；_接㈣相位角是否 201146087 變’右疋’藏據改變之相位角之_資訊進行相㈣/光轉換，並 提供計算絲產續鱗算結果之脈衝寬度簡職輸丨，以控制一 發光一極體照明設備之光線亮度。 【實施方式】 乂下係以一私又向可控石夕開關元件(Triode for Alternating Current， TRIAC)調光電路來說明本發日$之實施例，須注意本發明並不限於三端 雙向可控矽開關元件，本發明之技術亦適用於目前現有或未來發展出 之其他可以調整電源相位的開關元件。熟悉本領域之技術者，根據本 發明之技術適當的改變與調整所獲得的技術，均應落入本發明技術保 護之範疇。 第1圖顯示本發明一實施例之調光電路1之示意圖。調光電路i適 用於發光二極體照明設備LED。調光電路1包含有一相位調光器1〇、 一整流電路11、一洩放電路(Bleeder)12、一相位偵測電路13、一微控 器(Micro controller) 14、一定電流電路(constant current circuit)l5。其中， 該定電流電路15可依據設計者之設計選擇性地設置或省略。 相位調光器10依據使用者之調整量’產生相對應該調整量大小之交 流信號波形wa ; 整流電路11，用以對該交流信號波形整流，以產生一直流信號波形 洩放電路12，耦接整流電路11，用以作為一虛(dummy)負載； 相位彳貞測電路13，麵接’Λ放電路12，接收直流信號波形w(j且偵測 201146087 直流信號波形wd之相位角ag，並輸出相位角ag ; 微控器14，麵接相位偵測電路13 ’接收直流信號波形wd與相位角 ag’依據該相位角ag之變化決定如何產生一脈衝寬度調變(她6觀也 Modulation ’ PWM)輸出信號pwM(以下簡稱pwM輸出信號）。微控器 14產生一控制信號ci導通(加印加)洩放電路12使其產生負載消耗讓 調光益可以穩定輸出交流信號波形呢，當微控器14取得相位角踢後 會產生一控制信號cl斷路(turn off)洩放電路12，消除洩放電路，當直 流信號波形wd之相位角ag之角度不變時，使pwM輸出信號pwM之 脈衝寬度鋪不變。讀，輸A PWM輸心號pwM至定電流電路 15，產生固定大小之電流以讓發光二極體照明設備LED之光線保持不 變。 當該相位角ag之改變時，微控器14藉由產生控制信號cl 導通(turn on) 姐電路12使其產生貞載雜’讓調結可以穩定輸出交流信號波形 wa，當微控器14取得相位角呢後會產生一控制信號“斷路(tum 〇印 汽放電路12 ’齡触電路，雜!| 14接㈣驗號波形wd之相位 角ag之角度變化，來調整PWM輸出信號pWM之脈衝寬度，使該脈 衝覓度對應該相位角ag之變化量。之後定電流電路15接收該調整後之 PWM彳5號，相對應的調整其輸出電流大小，以改變發光二極體照明設 備LED之光線。須注意，光線改變後，若相位角咚保持不變則定電 流電路15的電流亦會軟’使光線的亮度固定至此次改變的亮度。 第2圖顯示本發明—實施例之微控器14之示意圖。微控器μ適用 於發光二極體照明設備LED。如第2圖所示，微控制器包含有洩放 (Bleederdrcuit)電路驅動單元14a、相位角偵測單元 201146087 unit) 14b、相位角濾波器(phase angle filter) 14c '計時器14d、控制邏輯 14e、調光曲線轉換模組(Dimming curve translator) 14f、PWM輪出電路 14g 〇 於運作時，微控器14之控制邏輯I4e配合計時器I4d之時脈來運作。 而計時器之時脈一實施例可設為與驅動單元14a和相位角偵測單元 同步。而相位角偵測單元14b接收相位輸入之信號，並配合相位角濾 波器14c過濾雜訊而取得相位角ag。接著控制邏輯丨如接收該相位角The signal is controlled by the brightness of the light-emitting diode illumination. The control logic is matched with the timing n light to operate, de-phase (4), according to phase (4) to determine how to control the command of the sister circuit and how to control the pulse-daring modulation output circuit to generate the pulse width modulation signal. The poorly-consistent example provides a π-electricity frequency modulation control method including the following steps, providing a pair of time signals, according to the phase detection circuit 4 phase angle signal, to determine whether to increase or decrease the timing Signal time reference and compare whether the overflow is overwhelming if it overflows; let the phase angle be related to a conversion curve, and calculate according to the calculation wire to produce (4) the pulse thief light work position, the whistle light _ pole The brightness of the body lighting device (4); and whether the current _ is greater than the previous phase angle, if greater than, the time signal reference is lowered; if less, the time signal _ reference is increased. The present invention provides a method for the fine phase (4) of the mine controller, comprising a step of determining whether the phase angle _ the operating clock is synchronized with the triggering circuit of the cascading circuit, and if If the butterfly is in, the rhyme comes in _ (four) to carry out the Newton action; _ connect (four) phase angle is 201146087 change the 'right 疋' to change the phase angle of the _ information to carry out the phase (four) / light conversion, and provide the calculation of the silk production results The pulse width is used to control the brightness of the light of a lighting one-pole lighting device. [Embodiment] The embodiment of the present invention is described by a private and controllable Triode for Alternating Current (TRIAC) dimming circuit. It should be noted that the present invention is not limited to three-terminal bidirectional. The control of the switching element, the technology of the present invention is also applicable to other switching elements that can be adjusted in the current or future development of the power supply phase. Those skilled in the art, and the techniques obtained by appropriate changes and adjustments in accordance with the teachings of the present invention, should fall within the scope of the technical protection of the present invention. Fig. 1 is a view showing a dimming circuit 1 according to an embodiment of the present invention. The dimming circuit i is suitable for LEDs of light-emitting diode lighting devices. The dimming circuit 1 includes a phase dimmer 1 , a rectifying circuit 11 , a bleeder circuit 12 , a phase detecting circuit 13 , a micro controller 14 , and a constant current circuit (constant current Circuit)l5. The constant current circuit 15 can be selectively set or omitted according to the designer's design. The phase dimmer 10 generates an AC signal waveform wa corresponding to the magnitude of the adjustment according to the adjustment amount of the user; the rectifier circuit 11 is configured to rectify the AC signal waveform to generate the DC signal waveform bleeder circuit 12, coupled The rectifier circuit 11 is used as a dummy load; the phase detection circuit 13 is connected to the 'pull circuit 12, receives the DC signal waveform w (j and detects the phase angle ag of the 201146087 DC signal waveform wd, and The output phase angle ag ; the microcontroller 14, the surface-connected phase detecting circuit 13 'receives the DC signal waveform wd and the phase angle ag' according to the change of the phase angle ag determines how to generate a pulse width modulation (she 6 also Modulation ' PWM) output signal pwM (hereinafter referred to as pwM output signal). The micro controller 14 generates a control signal ci to turn on (add) the bleeder circuit 12 to generate load consumption so that the dimming benefit can stably output the AC signal waveform. After the controller 14 obtains the phase angle kick, a control signal cl is generated to turn off the bleeder circuit 12, and the bleeder circuit is eliminated. When the angle of the phase angle ag of the DC signal waveform wd is constant, the pwM output signal is made. The pulse width of pwM is unchanged. Read, input A PWM heart rate pwM to constant current circuit 15, generate a fixed-size current to keep the light of the LED of the LED illumination device unchanged. When the phase angle ag changes At this time, the microcontroller 14 turns on the Sister circuit 12 to generate the 贞 load by generating the control signal cl. The adjustment can stabilize the output of the AC signal waveform wa. When the microcontroller 14 obtains the phase angle, it will generate A control signal "open circuit (tum 〇 汽 汽 12 12 ' ' ' ' ' ' ' ' ' ' ' ' | | | | | | | | | tum tum tum tum tum tum tum tum tum tum tum tum tum tum tum tum tum tum PWM tum PWM tum PWM PWM PWM PWM The degree corresponds to the amount of change of the phase angle ag. Then the constant current circuit 15 receives the adjusted PWM 彳 No. 5, and correspondingly adjusts the output current to change the light of the LED of the illuminating diode lighting device. After the change, if the phase angle 咚 remains unchanged, the current of the constant current circuit 15 will also be soft 'to fix the brightness of the light to the brightness changed this time. Fig. 2 shows a schematic diagram of the microcontroller 14 of the present invention. Applicable μ As shown in FIG. 2, the microcontroller includes a bleeder circuit driving unit 14a, a phase angle detecting unit 201146087 unit 14b, and a phase angle filter. 14c 'Timer 14d, control logic 14e, Dimming curve translator 14f, PWM wheeling circuit 14g, when operating, the control logic I4e of the microcontroller 14 operates in conjunction with the clock of the timer I4d . The clock of the timer can be set to be synchronized with the driving unit 14a and the phase angle detecting unit. The phase angle detecting unit 14b receives the phase input signal and filters the noise with the phase angle filter 14c to obtain the phase angle ag. The control logic then receives the phase angle

• ag，依據該相位角呢來決定如何控制驅動單元14a與如何產生PWM 輸信號。 -實施例’請參考第卜2圖’鶴單元Ma係可依據她角偵測單 兀14b所制到的目前相位角⑽咖肪㈣開啟角度來提供資訊給控 制邏輯Me如何控制驅動單元Ma而決定姐㈣咖咖刪電路u 的動作頻率。 請參考第2、3圖’說明微控器14控繼放電路12之動作方式之實 釀樹列。f 3圖顯示微控器14控制线放電路12之頻率調變控制技術的 動作說明圖。 步驟S302 :電源開啟初始時間。 步驟S：3〇4 _控制邏輯接收計時器⑽提供之對時信號(耻 r )田树g 1如產生溢位(〇verfl〇w)中斷信號時便跳至步驟 S306 ;若否則重新判斷計時器之對時信號是否上溢。 步驟S306 :微控器14觸路，κ 觸毛為放電路12同時跳至步驟S316與步驟 S308 〇 201146087 步驟纖：微控器14之相位角偵測單元⑽取得相位角呢且傳送 至相位角濾波器14c，並同時跳至步驟S31〇與S318。 步驟S310:微控器14判斷目前相位角％是否大於先前相位角，若 是’跳至步驟S312，若否跳至步驟_S314。 步驟Sm微㈣μ降低料器丨歡對時鎌時準(τ咖黯 base) 〇 步驟S3M:微控器η提高計時器⑽之對時信號時間基準。 步驟S316 .微控ϋ μ控制驅動單元Ma驅動外部沒放電路12。須 注意，-實施例’依據設計者需求，触電路12亦可設置在微控器Μ 中。 步驟S318 :微控器14令相位角ag與調光曲線轉換模組咐提供之 轉換曲線侧’並加以計算’已將計算結果輸出至pwM輸出電路· 一實施例，微㈣Η可將嫌肖訊提供給調光 曲線轉換模組14f，並由調統線轉換模組14f依據其調光曲線 curve)轉換該相位角ag，以產生計算結果提供至pWM輸出電路啤。 須注意，調錢線可依據設計者需求而設定，其可為目前現有或未來 發展出之各種調光曲線。 步驟S32〇 : PWM輪出電路Mg依據計算結果，產生工作週期 (duty cycle) ° 步驟S322 : PWM輸出電路14g產生pWM輸出信號ρψΜ，以控制 發光二極體照明設備LJED之亮度。 12 201146087 當微控器14驅動單元Ha控制洩放電路12，相位角ag開啟角度越 小時，會讓洩放電路12之動作頻率越高；反之開啟角度越大時，洩放 電路12之動作頻率越小。• ag, depending on the phase angle, decide how to control the drive unit 14a and how to generate the PWM input signal. - Embodiment 'Please refer to Figure 2'. The crane unit Ma can provide information to the control logic Me according to the current phase angle (10) of the angle detection unit (b). Determine the frequency of action of the sister (4) coffee and coffee to delete the circuit u. Please refer to Figures 2 and 3 for a description of the actual tree arrangement of the mode of operation of the microcontroller 14 control relay circuit 12. The f 3 diagram shows an operation explanatory diagram of the frequency modulation control technique of the microcontroller 14 controlling the line discharge circuit 12. Step S302: The power source is turned on for the initial time. Step S: 3〇4 _ control logic receiving timer (10) provides a timing signal (shame r) Tian Shu g 1 jumps to step S306 if an overflow (〇verfl〇w) interrupt signal is generated; otherwise, the timing is re-determined Whether the signal of the counter is overflowing. Step S306: The microcontroller 14 is in contact with the circuit, and the κ finger is the discharge circuit 12 and simultaneously jumps to step S316 and step S308 〇201146087. The fiber phase detection unit (10) of the microcontroller 14 takes the phase angle and transmits it to the phase angle. The filter 14c, and simultaneously jumps to steps S31A and S318. Step S310: The microcontroller 14 determines whether the current phase angle % is greater than the previous phase angle, and if yes, skips to step S312, and if not, skips to step _S314. Step Sm micro (four) μ lowering the feeder 丨 对 ( τ τ τ τ τ τ τ step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step step Step S316. The micro control ϋ μ controls the driving unit Ma to drive the external pinch circuit 12. It should be noted that the embodiment 12 can also be placed in the microcontroller 依据 according to the designer's needs. Step S318: The microcontroller 14 causes the phase angle ag and the conversion curve side provided by the dimming curve conversion module to 'calculate' and output the calculation result to the pwM output circuit. In an embodiment, the micro (four) 将 can be sinister The dimming curve conversion module 14f is provided, and the phase angle ag is converted by the modulation line conversion module 14f according to its dimming curve (curve) to generate a calculation result and provided to the pWM output circuit beer. It should be noted that the money adjustment line can be set according to the designer's needs, and it can be various dimming curves that are currently available or developed in the future. Step S32: The PWM wheel-out circuit Mg generates a duty cycle according to the calculation result. Step S322: The PWM output circuit 14g generates a pWM output signal ρψΜ to control the brightness of the light-emitting diode illumination device LJED. 12 201146087 When the driving unit Ha of the micro controller 14 controls the bleeder circuit 12, the smaller the phase angle ag opening angle is, the higher the operating frequency of the bleeder circuit 12 is, and the larger the opening angle is, the operating frequency of the bleeder circuit 12 The smaller.

須注意者，驅動洩放電路S310步驟之實施例中，在洩放電路12 k號波形開啟的角度為小時，經由相位調光器1〇所輸入的功^p〇wer) 為小，所以不會造成太大功耗，同時因為開啟角度小的關係，洩放電 路12的動作頻率高，會讓調光電路1系統處於相對穩定的操作情況， 如此也可以提升調光電路丨系統的反應速度；反之，當開啟角度越大 時，：¾放電路12動作頻率則越低，因為此時由相位調光器1〇所輸入 的功(Power)足夠大，電源系統已可以工作在穩定區，並且不會造成太 大功耗在>姐電路上。依此方式，微控^藉由不同相位㈣啟角度來 決定触電路12的動作解，可以有效的讓相位調光器⑴適時工作， 並因為A放電路12的貞載為—虛(dummy)負載，可適當調整負載大 小，即可解決-般線性負載的德問題。請參考第2、4圖，相位角伯 測電路(phase angie detect drcuit)⑽和相位角滤波器⑽咖如扣 filter)l4c此架構係搭配洩放⑻沈如咖此)電路而所設計 請參考第2、4圖，說明微㈣14處理相位角之動作方式之實施例。 第4圖顯示微控n 14之制機機制。 乂驟S402 :相位㈣測單元⑽準備好撫取相位。 步驟 控制邏輯14e判斷相位角偵測單元14b是否與茂放電 之觸發信朗步，若是，舰步驟娜；若細情驟綱。 步驟S406 :相位偵測單元⑽取得相位角呢。 13 201146087 步驟S4〇8 :控制邏輯Me判斷目前相位角ag是否為新進來的相位 角’若是’跳至步驟S410 ;若否，跳至步驟S404。 步驟S410 :相位角遽波器14c對新進來的相位角進行滤波動作後傳 送至控制邏輯14e。 步驟S412 :控制邏輯14e判斷其所接收的相位角是否改變若是， 跳至步驟S414 ;若否，跳至步驟s4〇4。 步驟S414 :控制邏輯14e將相位角之相關資訊傳送至調光曲線轉換 器Mf’進行相位角/光線轉換，並提供計算結果(即調整信號)至pwM 輸出電路14g。-實施例，控姆輯…係顧進相位肖之角度提供給 調光曲線轉㈣14f轉換；另—實施例，控制邏輯…係將相位角之改 變量提供給調光曲線轉換器14f轉換。 步驟’ ：PWM輪出電路啤依據轉換之計算結果，產生對應該 計算結果之PWM輸出信號輸出。 須注意’因為狄電路12採用頻率調變控制，所以前端相位調光器 並非直卫作於穩練況，若是實時㈣^丨㈣的制相位肖會讓系統 得到過多的錯誤相位角數據，_設計此相位角偵測單元14b可以配 合沒放電路12來作同步㈣嶋作。當狀(版如eke,電路動作 時，微控器Μ才去開啟相位㈣測單元⑽，如此可以有效的降低錯 誤機率。 另外，她角渡波器14c所扮演的角色，則是滤除因外部雜訊相 位調光器不穩定'操作溫度和電源干擾等等問題所造成的相位角錯誤 201146087 而調光曲線轉換模組(Dimmingcurve translator)14f的設計，可以解決 因不同相位調光器10的輸出調光曲線不線性、曲線變化陡峭、不符合 人眼舒適度等等所架構，此模組採用數學模組設計，所以可經由數學程 式化的權值計算方式'等比例計算或查表法來實厚不同的調光區線需 求’可以克服硬體電路不易實現諸多調光曲線變化的需求，讓設計者容 易的設計出所要調光曲線。 PWM輸出電路I4g用以產生一脈衝寬度信號，以驅動該發光二極體照 明設備。而PWM輸出電路14g之運作係依據調整信號，產生相對應該 調整信號之脈衝寬度，以相對應地改變該發光二極體照明設備之光線 冗度。PWM輸出電路14g架構可以精確的做LED功率輸 出控制，讓後端定電流（Constant current circuit)電路15可以依附 相位調光器10所開啟的相位角度作適當調光，其動作是經由相位角偵 測單元14b，取得相位角數值後再經由相位角濾波器Mc取得正確的調 光數值然後依照設计者所需要的調光曲線(Dimming curve)來計算 PWM的輪出工作週期(加以CyCie)。 本發明之實施例可用來改善習知技術所面臨到的難題;本實施例設 計方向和創新特點至少如下： a·使用線性負載簡化線路設計降低系統成本。 b.改善傳統線性負載低效率高功耗缺點。 c•採用之微控器14為微處理器架構設計，其可以程式化系統參 數、頻率調變控制、同步取樣、數位濾波器架構、調光曲線轉 換、PWM調變輸出等技術’以上優勢可以讓系統相容於不同 特性之TRIAC調光器。 15 201146087 d. 洩放電路12的工作方式一實施例中可採用頻率調變控制技術 (Frequency modulation)，以降低*功耗。 e. 相位調光器1 〇之相位角(phase angle)债測時，相位偵測電路13 係採用同步於洩放電路12之取樣技術。 f. 設置相位角濾波器(phase angle filter) ’以本濾波器去除雜訊可有 效取得相位調光器之相位角wd來作為調光參數。 g-調光曲線轉換模組(Dimming curve translator)可以將取得的相位 角wd之角度，依比例搭配PWM信號之輸出，來實現不同調 光比例值。 h· PWM輸出電路(PWM circuit)設計，可有效率且輕易地調整發光 二極體照明設備LED的亮度。 卜u上雖以實施例說明本發明，但並不因此限定本發明之 範圍^該行業者進行各種變形錢更，只要不脫離本發明 之要旨’亦不脫離本發明之申請專利範圍。 【圖式簡單說明】 圖1係根據本發明一實施例之一調光電路之示意圖。 圖2係根據本發明一實施例之一調光電路之内部控制之功 能方塊圖。 圖3係根據本發明一實施例之一調光控制方法之流程圖。 圖4係根據本發明另一實施例之—調光控制方法之流程 16 201146087 【主要元件符號說明】 1調光電路 10調光器 11 整流電路 12洩放電路 13相位偵測電路 14微控器 15 定電流電路 @ LED發光二極體照明設備 14a驅動單元 14b相位角偵測單元 14c相位角濾波器 14e控制邏輯 14f調光曲線轉換模組 14g PWM輸出電路 17It should be noted that in the embodiment of the step of driving the bleeder circuit S310, when the angle of the waveform of the bleeder circuit 12 k is turned on, the input power via the phase dimmer 1 为 is small, so It will cause too much power consumption, and because of the small opening angle, the operating frequency of the bleeder circuit 12 is high, which will make the system of the dimming circuit 1 relatively stable, which can also improve the reaction speed of the dimming circuit 丨 system. Conversely, when the opening angle is larger, the operating frequency of the circuit 12 is lower, because the power input by the phase dimmer 1 is sufficiently large, and the power system can work in the stable region. And it won't cause too much power consumption on the > sister circuit. In this way, the micro control ^ determines the action solution of the touch circuit 12 by different phase (four) opening angles, which can effectively make the phase dimmer (1) work in time, and because the load of the A discharge circuit 12 is - dummy Load, you can adjust the load size appropriately, you can solve the problem of the linear load. Please refer to the 2nd and 4th figures, phase angie detect drcuit (10) and phase angle filter (10) coffee as deduction filter) l4c this architecture is equipped with bleed (8) Shen Rujia) circuit design please refer to Figures 2 and 4 illustrate an embodiment of the mode of operation of the micro (four) 14 processing phase angle. Figure 4 shows the mechanism of the micro-control n 14 machine. Step S402: The phase (four) measuring unit (10) is ready to take the phase. The step control logic 14e determines whether the phase angle detecting unit 14b and the triggering signal of the laser discharge step, if so, the ship step; if the details are short. Step S406: The phase detecting unit (10) obtains the phase angle. 13 201146087 Step S4〇8: The control logic Me determines whether the current phase angle ag is a new incoming phase angle 'if yes' to step S410; if not, skips to step S404. Step S410: The phase angle chopper 14c performs a filtering operation on the newly entered phase angle and transmits it to the control logic 14e. Step S412: The control logic 14e determines whether the received phase angle has changed. If yes, the process goes to step S414; if not, the process goes to step s4〇4. Step S414: The control logic 14e transmits the correlation information of the phase angle to the dimming curve converter Mf' for phase angle/ray conversion, and provides a calculation result (i.e., adjustment signal) to the pwM output circuit 14g. - Embodiment, the control of the series is provided to the dimming curve to the (4) 14f conversion; the other embodiment, the control logic ... provides the phase angle change variable to the dimming curve converter 14f conversion. Step ': The PWM wheel-out circuit beer produces a PWM output signal output corresponding to the calculation result according to the calculation result of the conversion. It should be noted that 'Because Di circuit 12 uses frequency modulation control, the front-end phase dimmer is not a straight-forward stability. If it is real-time (four)^丨(4), the phase will cause the system to get too much wrong phase angle data, _ The phase angle detecting unit 14b is designed to cooperate with the immersing circuit 12 for synchronization (4). When the state (such as eke, the circuit action, the microcontroller will only turn on the phase (four) measurement unit (10), which can effectively reduce the probability of error. In addition, the role of her angle waver 14c is to filter out the external The phase angle dimmer is unstable. The phase angle error caused by the operation temperature and power supply interference is 201146087. The dimming curve converter module 14f is designed to solve the output of the different phase dimmers 10. The dimming curve is not linear, the curve changes steeply, and it does not conform to the comfort of the human eye. The module is designed with mathematical modules, so it can be calculated by mathematically-programmed weights, such as proportional calculation or table lookup. The requirement of different dimming area lines can overcome the requirement that the hardware circuit is not easy to realize many dimming curve changes, so that the designer can easily design the desired dimming curve. The PWM output circuit I4g is used to generate a pulse width signal to Driving the LED illumination device, and the operation of the PWM output circuit 14g is based on the adjustment signal to generate a pulse width corresponding to the adjustment signal to The light redundancy of the light-emitting diode lighting device is changed. The PWM output circuit 14g architecture can accurately perform LED power output control, so that the constant current circuit 15 can be connected to the phase dimmer 10 to be turned on. The phase angle is appropriately dimmed, and the action is obtained by the phase angle detecting unit 14b, and the phase angle value is obtained, and then the correct dimming value is obtained through the phase angle filter Mc and then according to the dimming curve required by the designer (Dimming curve) To calculate the turn-off duty cycle of the PWM (with CyCie). Embodiments of the present invention can be used to improve the problems faced by the prior art; the design direction and innovative features of this embodiment are at least as follows: a. Using a linear load to simplify the circuit design Reduce system cost b. Improve traditional linear load low efficiency and high power consumption disadvantages c• Microcontroller 14 is designed for microprocessor architecture, which can program system parameters, frequency modulation control, synchronous sampling, digital filter Technology such as architecture, dimming curve conversion, PWM modulation output, etc. The above advantages allow the system to be compatible with TRIAC dimmers with different characteristics. 201146087 d. Operation mode of bleeder circuit 12 In one embodiment, frequency modulation control technology (Frequency modulation) can be used to reduce * power consumption. e. Phase dimmer 1 phase phase angle debt measurement time The phase detecting circuit 13 adopts a sampling technique synchronized with the bleeder circuit 12. f. Setting a phase angle filter 'This phase filter removes noise to effectively obtain the phase angle wd of the phase dimmer. As a dimming parameter, the g-dimming curve translator can realize the different dimming ratio values by proportionally matching the angle of the obtained phase angle wd with the output of the PWM signal. h· PWM circuit design, which can efficiently and easily adjust the brightness of the LED of the LED lighting device. The present invention is described by way of example only, and is not intended to limit the scope of the invention, and the scope of the invention may be made without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a dimming circuit according to an embodiment of the present invention. 2 is a functional block diagram of internal control of a dimming circuit in accordance with an embodiment of the present invention. 3 is a flow chart of a dimming control method according to an embodiment of the invention. 4 is a flow chart of a dimming control method according to another embodiment of the present invention. 16 201146087 [Description of main component symbols] 1 dimming circuit 10 dimmer 11 rectifying circuit 12 bleeder circuit 13 phase detecting circuit 14 micro controller 15 constant current circuit @ LED light emitting diode lighting device 14a driving unit 14b phase angle detecting unit 14c phase angle filter 14e control logic 14f dimming curve conversion module 14g PWM output circuit 17

Claims (1)

201146087 七、申請專利範圍： 1. 一種調光電路，適用於發光二極體照明設備，包含有： ―沒放電路，用以作為一虛負載； —相位調光器，依據使用者之調整相位調光器之調整量，產生相對應該調 整量大小之信號波形； 一相位偵測電路，偵測該信號波形之相位角； -脈衝寬度調變輸出電路，用以產生—脈衝寬度信號，以驅動該發光二極 體照明設備；以及 一微控器，耦接該相位偵測電路，當該信號波形之相位角度不變時，維持 該洩放電路信號波形之開啟頻率，且該脈衝寬度信號之脈衝寬度保持不 變，使β玄發光二極體照明設備之光線保持不變；當該相位角改變時，增 加或降低該洩放電路信號波形之開啟頻率，並產生一調整信號，且該脈 衝寬度調變輪出電路依據該調整信號，產生相對應該調整信號之脈衝寬 度，以相對應地改變該發光二極體照明設備之光線亮度。 2. 如申請專利範圍第〗項所述之調光電路，其中該微控器包含： 相位角濾波器，用以過濾該相位角之雜訊，產生一濾波後信號；以及 —調光曲線轉換模組，接收該相位角之相關資訊，依據一調光曲線轉換該 相位角之相關資訊，以產生相對應該相位角相關資訊之該脈衝寬度。 3·如申請專利範圍第丨項所述之調光電路，其中該微控器包含： 一相位角偵測單元，偵測該信號波形之相位角； —相位角濾波器，用以過濾該相位角之雜訊； 一計時器，用以產生一與該洩放電路驅動單元和相位角偵測單元同 步之時脈； 201146087 一洩放電路驅動單元，用以依據一指令產生驅動訊號，以控制該洩 放電路信號波形之開啟頻率； —調光曲線轉換模組，用以提供一調光曲線； 一脈衝寬度調變輸出電路，用以產生一脈衝寬度調變信號以控制 該發光二極體照明設備之光線亮度；以及201146087 VII. Patent application scope: 1. A dimming circuit suitable for lighting diode lighting equipment, including: ―no circuit, used as a virtual load; - phase dimmer, adjusted phase according to the user The adjustment amount of the dimmer produces a signal waveform corresponding to the amount of adjustment; a phase detection circuit detects the phase angle of the signal waveform; - a pulse width modulation output circuit for generating a pulse width signal to drive The LED device is coupled to the phase detection circuit, and when the phase angle of the signal waveform is constant, the turn-on frequency of the signal waveform of the bleeder circuit is maintained, and the pulse width signal is The pulse width remains unchanged, so that the light of the β-light emitting diode illumination device remains unchanged; when the phase angle changes, the opening frequency of the signal waveform of the bleeder circuit is increased or decreased, and an adjustment signal is generated, and the pulse is generated. The width modulation wheel-out circuit generates a pulse width corresponding to the adjustment signal according to the adjustment signal, so as to correspondingly change the light-emitting diode photo The brightness of the light device. 2. The dimming circuit of claim 1, wherein the microcontroller comprises: a phase angle filter for filtering noise of the phase angle to generate a filtered signal; and - dimming curve conversion The module receives the relevant information of the phase angle, and converts the correlation information of the phase angle according to a dimming curve to generate the pulse width corresponding to the phase angle related information. 3. The dimming circuit of claim 2, wherein the microcontroller comprises: a phase angle detecting unit for detecting a phase angle of the signal waveform; and a phase angle filter for filtering the phase a noise signal; a timer for generating a clock synchronized with the bleeder circuit driving unit and the phase angle detecting unit; 201146087 a bleeder circuit driving unit for generating a driving signal according to an instruction to control a turn-off circuit signal waveform opening frequency; a dimming curve conversion module for providing a dimming curve; a pulse width modulation output circuit for generating a pulse width modulation signal for controlling the light emitting diode Light intensity of the lighting device; 控制邏輯，係西己合該計時器時脈來運作，接收該相位角依據兮 相位角來決定如何產生控制該敝電路驅動單元之指令與如何控制該 脈衝寬度調變輸出電路產生該脈衝寬度調變信號。 4.如申請專利範圍第〗項所述之調光電路，其中該相位調光 向可控矽開關元件。 又 5. 如申請專利範圍第i項所述之調光電路，其中該微控器為可程式化之裝 置’其運作與控制方式係以軟體、物體或硬體之方式修改。 、 6·如申料機_丨_述之調光電路，其巾軸放魏與 測電路係互為同步。 用谓 7. —種微控器，包含： 相位角镇測單元’摘測一相位偵測電路提供之信號波形之相位角 相位角渡波器，用以過渡該相位角之雜訊； 用以產生-與該姐電路和相位偵測電路同步之時脈； 一計時器 以控制該茂 一歧電_鱗元，用以罐—齡產越動訊號， 放電路信缝形之開啟頻率； 一調光曲線轉換模組’用以提供-調光曲線； 19 201146087 一脈衝寬度調變輸出電路，用以產生-脈衝寬度調變信號，以控制 一發光二極體照明設備之光線亮度；以及 -控制邏輯’係配合該計時器時脈來運作，接收該相位角，依據該 相位角來決定如織生控繼_電_動單元之指令與如何控制該 脈衝寬度調變輪出電路產生該脈衝寬度調變信號。 8. —種控制洩放電路之頻率調變控制方法，包含： 提供—對時信號，依獅位制電路之相位肖錢，以酬該提高 或降低對時域時間基準，並比較是否上溢，若上闕觸發該沒放電 路； 7該相位角與—轉換曲線相關，並加以計算依據該計算結果產生 相對應的麵寬度碰轉·，以㈣發光二極體照明設備咖之 亮度；以及 機目月j相位角疋否大於先前相位角，若大於，則降低該對時信號 時間基準；若小於則提高該對時信號時間基準。 籲 9· 一種微控器領測相位角方法，包含： Ί斷相位角⑽之運作時脈是否與触電路之觸發信朗步，若同 步則擷取該相位角 Ί斷目⑴相位角疋否為新進來的相位角若是對該新進來的相位 角進行遽波動作； ^斷接收的相位肢錢變，若是，則依據該改變之她角之相關 。進仃她角/光線轉換，並提料算結果產生對應斜算結果之脈 20 201146087 衝寬度調變信號輸出，以控制一發光二極體照明設備之光線亮度。 10.如申請專利範圍第9項之微控器偵測相位角方法，其中該改變之相位角 相關資訊係為該新進相位角之角度'或該相位角之改變量。The control logic is operated by the timer clock, and the phase angle is determined according to the phase angle to determine how to generate an instruction to control the driving circuit of the circuit and how to control the pulse width modulation output circuit to generate the pulse width modulation Change the signal. 4. The dimming circuit of claim 1, wherein the phase dimming is controllable to the switching element. 5. The dimming circuit of claim i, wherein the microcontroller is a programmable device, the operation and control method of which is modified in the form of a software, an object or a hardware. 6. If the dimming circuit of the application machine _ _ _ is described, the towel shaft and the measuring circuit are synchronized with each other. A type of micro-controller is provided, comprising: a phase angle measuring unit that extracts a phase angle phase angle waver of a signal waveform provided by a phase detecting circuit for transitioning the noise of the phase angle; - a clock synchronized with the sister circuit and the phase detecting circuit; a timer to control the micro-distribution _scale, used for the can-age transmission signal, the opening frequency of the circuit letter slit; Curve conversion module 'to provide - dimming curve; 19 201146087 a pulse width modulation output circuit for generating a - pulse width modulation signal to control the brightness of a light emitting diode illumination device; and - control logic 'The system cooperates with the timer clock to receive the phase angle, and according to the phase angle, determines the command of the weaving control unit and how to control the pulse width modulation wheel circuit to generate the pulse width modulation. Change the signal. 8. A frequency modulation control method for controlling a bleeder circuit, comprising: providing a timing signal, according to a phase of the lion position circuit, to increase or decrease the time domain time reference, and compare whether the overflow If the upper trigger triggers the non-discharge circuit; 7 the phase angle is related to the -conversion curve, and is calculated according to the calculation result to generate a corresponding surface width collision, to (4) the brightness of the light-emitting diode lighting device; The machine phase j phase angle 疋 is greater than the previous phase angle. If it is greater than, the pair time signal time reference is lowered; if less, the pair time signal time reference is increased.于9· A method for controlling the phase angle of a micro controller, comprising: determining whether the operating clock of the phase angle (10) is in synchronization with the triggering signal of the touch circuit, and if the synchronization is synchronized, the phase angle is taken (1) the phase angle is 为If the new incoming phase angle is chopping the new incoming phase angle; ^ the phase of the received limb is changed, and if so, the correlation is based on the angle of the change. Entering her angle/light conversion, and feeding the result to produce the pulse corresponding to the result of the oblique calculation 20 201146087 The width modulation signal output is used to control the brightness of the light of a light-emitting diode lighting device. 10. The method of detecting a phase angle of a microcontroller according to claim 9 wherein the phase angle related information of the change is an angle of the new phase angle or a change amount of the phase angle. 21twenty one
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