201146074 發明說明： 【發明所屬之技術領域】 本發明係關於-種發光二極體輸出功糊整裝置及其方法， 軸偏壓侧與計算、評估，㈣綱整控制發 先一極體負载輸出功率之裝置及方法。 【先前技術】 元件按名2,體_，LightEmittingDi〇峨一種發光光源 j在其兩知加上足夠的電流將會產生發光光源，但1内部所 而 偏壓(fo_d讀㈣麟定值’易隨溫度或環境影響 =變動，因此，發光二極體之輸出功率亦非為定功率：響 也會隨著上述溫度或環境影響而產生變動。 心 二極二複數發光二極體元件組成陣列或燈條方式之發光 二ΐ原有的設計下，並無法保證及控制輸出功率變動率，= 必而採用推估的方式來確保輸出功率，通斤 式’讓發光二極體燈具經一段長時間的使 機的方 來推測實際使用時之輸出功率狀況，但二功率’ 式的相對短暫測試時間確 方法及人工計算方式設定輸出電流制:功 制’使發光二歸燈具並沒有達掌握及控 此外，習知發光二極體燈具，會效果。 體順向偏壓’將造成輸出功無=穩 而作上述預燒機的動作，待發光二極體順向生產時必 2際輸出的定電流源及控制輸出的，才能設 生產工時與人力，致使發光二極體燈具有生產效1=: 3 201146074 $問題與缺點’且為了保證該發光二極體燈具功率輸出品質， 所頁二匕的額定輸出功率’以避免曰後出廠後因環境問題 f率不足之缺撼，讓許多習知發光二極體燈具並非真 正付S綠月b %保之低耗能需求。 ’ 在«緒專觀術文射面巾 勤Phg且“燈來交互替換點亮，以解決發光二極體之溫度變 【發明内容】 户職機方式加以長時_試，才缺定發光二極體 廠額定輸出辨，使·光二鋪燈具生產功冗2 扬格偏南’且無法真正符合綠能環保之低耗能需求。 時，要發展—種低生產成本、免預燒機及縮短生產工 消耗鮮耻輸出神變_素及接近定功率 有效降低因溫度與環境變誠素所產生的 額外功率她’以達到真正低耗能的綠能環保要求。 及-雷诉魏甘r °十控制數位顧比轉換控制電路 負载，以㈣1庙，該類比/數位轉換偵測電路連結發光二極體 該其偏壓’並將此順向偏壓轉換成數位訊號輸出， 輪出_偏&數位訊號值予以評估及計算’再 輸出一對應電流值之數位電流控制訊號，再由該數位/類比轉= 4 201146074 需之工作電源。 工 數位/類比轉換控制電路所 (A)開t發明之發光：極咖神_法，其步驟係包含： (C=:的 (D== 是否正常?由該計算控制單元比/ 决)5又疋輸出電流為最小工作雷涔，由 號 並輸出一數位電流控制訊號； =，m_U比電 === =步驟，制單元所設定輸==: 先一極體燈具之發光二極體陣列，使該發光二極體燈具之輸出 201146074 功率為接近定功率之狀態，重覆步驟B。 #本發明發光二極體輸出辨難裝置及其法之功效，係在於 猎由自動债測如發光二極體燈具負載之順向偏壓值，經過評估該 順向健;^正常，並計算決定該發光二極體燈具之電流值，再 回細比電流控制訊號給發光二極贿具之定電流驅動電路，使 該定電流驅動電路可輸出目標電流值之電流，讓縣二極體燈具 的輸出功轉_整至接近定功率狀態，完全絲習知發光二極 體燈具之輸出神會隨著溫度與環境魏之問題與缺點，並且， 在發光-極體燈具製造過程中，不需經由預燒機方式予以預估及 •設定出廠額定功率’使該發光二極體燈具產品之製造成本、工時 可大巾田降低，並可達成真正綠能環保的低耗能目的與效果，進而 提昇本發明之產業利用價值。 【實施方式】 首先請參閱第-圖所示’本發明之發光二極體輸出功率調整 裝置100，係包括-類比/數位轉換偵測電路1()，連結—發光二極 體燈具200負載，以偵測該發光二極體燈具2〇〇巾之一發光二極 體陣列210 _向偏壓VF之值，並將該類比順向偏壓vf之值轉 成對應的數位訊號11輸出，該類比/數位轉換伽電路1〇所連结 響之貞餘非以航二極體祕驗，舉凡是其他等效之發 二，體_或複數發光二極條所組成之負載，t不脫本發明 之範*#。 -計算控鮮元2G，賴鋪比/數轉換_電路1〇，以對 上物類比/數位轉換_電路1G轉換輸出之數位訊號u所對岸 W之數值進行評估並再計算決定輸出電流值，例^ 該順向偏壓VF之數值為正常狀態下，以輸出功率p=順向偏壓％ X電流I關係，將輸出功率P奴较值，如輸出功率為％瓦特， 虽順向偏壓VF為33伏特時，該電流！之值約為1515安培使 該計算控制單元2〇細触—對應電流丨數值之數位電流控制訊 201146074 號21，如該順向偏壓VF之值超出正常值範圍，即順向偏壓VF 之值異常，則該計算控制單元20則直接設定該電流I數值為最小 工作電流值(Imin)，使輸出之數位電流控制訊號2丨之值為最小工作 電流值，讓輸出功率P接近於預先設定之5〇瓦特的定功率狀態， 該計算控制單元20之型式不限’在本發明中係以一微處理單元為 例。 一數位/類比轉換控制電路3〇 ,連結該計算控制單元2〇及上 述之發光一極體燈具200中之定電流驅動電路220，以將該計算控 制單το 20所輸出之數位電流控制訊號21轉換成相對應電流數值 _之類比電流控制訊號31輸出，該類比電流控制訊號31並回饋至 該發光二極體燈具2〇〇之一定電流驅動電路22〇，以使該定電流驅 動電路22〇以上述之計算控制單元2〇所評估及計算而得之電流驅 動發光二極體燈具200中之發光二極體陣列21〇，達到本發明使發 光二極體燈具200負載之輸出功率接近定功率狀態之功效。 一電源電路40 ’連結該類比/數位轉換偵測電路10、計算控制 單7G 20及數位/類比轉換控制電路30，以提供該類比/數位轉換偵 測電路10、計算控制單元2〇及數位/類比轉換控制電路3〇所需之 直紅作電源’該電源電路4〇之電源輸人方式不限，在本發明中 #係列舉連結該發光二極體燈具2〇〇之發光二極體陣列210之電源 為例，α以將該電源轉換成上述各類比/數位轉換偵測電路10、計算 控解元20及數位/類轉換控制電路3G所^之直紅作電源輸 ώ ’其他如電源電路40為錢電池組或較/直祕換$提供直流 電源之電源輸人方式，亦屬本發明之範嘴，換言之，本發明之發 光二極體輸出功率調整裝置100可以是直接納入該發光二極體燈 具200之線路中，或者也可以是為一_之電路裝置，另外連結 於發光二極體燈具200之外。 請再配合第二圖所示，為本發明之發光二極體輸出功率調整 方法之流程圖，其步驟包括： 201146074 (300)開始； ⑽= 發光二極體順向偏壓，由該類比/數 、對發光二鋪燈具負载進行順向偏壓yp = 1 (320)==彳_向偏壓值轉換成數位_，由_ 得之順向偏壓 估順向偏壓是否正常？由該計算控制單元％對步驟娜之 味t /數位轉換偵測電路1〇所輸出的順向偏壓之數位 唬11值予以評估，如果正常谁 °201146074 Description of the invention: [Technical field of the invention] The present invention relates to a light-emitting diode output power paste device and method thereof, a shaft bias side and calculation, evaluation, and (4) a whole control first-pole load output Power device and method. [Prior Art] The component by name 2, body _, LightEmittingDi 〇峨 an illuminating light source j in its two knowledge plus enough current will produce a illuminating light source, but 1 internal bias (fo_d read (four) lining value 'easy With temperature or environmental influence = variation, therefore, the output power of the LED is not constant power: the ring will also change with the above temperature or environmental influences. The heart diode or two complex LED components form an array or Under the original design of the light bar method, the output power rate cannot be guaranteed and controlled. = It is necessary to use the estimation method to ensure the output power, and the light-emitting diode lamp can be used for a long time. The machine's side to speculate on the actual output power state, but the two-power's relatively short test time method and manual calculation method set the output current system: the power system makes the illuminating two-way luminaire not mastered and controlled In addition, the conventional light-emitting diode lamp will have an effect. The body forward bias will cause the output power to be non-stable and stabilize the action of the above-mentioned pre-burning machine, and the light-emitting diode must be lost when it is produced in the forward direction. The constant current source and the control output can be used to set the production man-hour and manpower, so that the LED light has the production efficiency 1=: 3 201146074 $Problems and shortcomings' and in order to ensure the power output quality of the LED lamp, The rated output power of the page is not to avoid the lack of environmental problems after the factory, so many conventional LED lamps do not really pay for the low energy consumption of S Green Moon b%. In the «European specializes in the face of the face, the Phg and the "lights are alternately replaced to light up, in order to solve the temperature change of the light-emitting diode" [invention] The household machine mode is long-term _ test, the light-emitting diode is lacking According to the rated output of the factory, the production of the light of the second lighting is 2, and it can't really meet the low energy consumption demand of green energy. When developing, it is necessary to develop low production cost, free of pre-burning machine and shorten production. Consumption of shame output changes _ prime and close to the fixed power to effectively reduce the extra power generated by temperature and environmental change, she 'to achieve the real low energy consumption of green energy environmental requirements. And - Lei v. Wei Gan r ° ten control Digital ratio conversion control Load, in (4) 1 temple, the analog/digital conversion detection circuit is connected to the light-emitting diode of the bias voltage 'and converts the forward bias into a digital signal output, and the round-out & digital signal value is evaluated and calculated 'Re-output a digital current control signal corresponding to the current value, and then the digital / analog ratio = 4 201146074 required working power. Worker digital / analog conversion control circuit (A) open t invention of the light: extremely coffee God _ method The steps include: (C=: (D== is normal? The calculation control unit compares/determines) 5 and the output current is the minimum working thunder, and the number is output and a digital current control signal is output; =, m_U ratio electric === = step, the unit is set to input ==: The first LED lamp array of the first pole body, so that the output of the LED lamp is 201146074, the power is close to the fixed power state, repeating the steps B. The effect of the light-emitting diode output distinguishing device and the method thereof is that the hunting is performed by an automatic debt measurement, such as the forward bias value of the light-emitting diode lamp load, and the forward direction is evaluated; ^ normal, and calculated Determining the current value of the light-emitting diode lamp, and then returning the current control signal to the constant current driving circuit of the light-emitting diode package, so that the constant current driving circuit can output the current of the target current value, and let the county diode lamp The output of the output _ is close to the constant power state, and the output of the illuminating diode lamp is completely different from the temperature and environment, and in the manufacturing process of the illuminating-polar illuminator, Estimating and setting the factory rated power through the pre-burner method makes the manufacturing cost and working hours of the LED product can be reduced, and the low-energy purpose and effect of real green energy environment can be achieved. Further, the industrial utilization value of the present invention is improved. [Embodiment] Referring first to the first embodiment, the LED output power adjustment device 100 of the present invention includes an analog-to-digital/digital conversion detection circuit 1 (), and a connection-light-emitting diode lamp 200 load. Detecting the value of the biasing voltage VF of one of the light-emitting diode arrays 210 of the light-emitting diode lamp 2, and converting the value of the analog forward bias voltage vf into a corresponding digital signal 11 output, The analog/digital conversion gamma circuit 1〇 is connected to the singularity of the singularity of the singularity of the singularity of the singularity, and the load of the other equivalent of the second, the body _ or the complex illuminating diode is not lost. The invention of the invention * #. - Calculate the control element 2G, the Laipu ratio/number conversion_circuit 1〇, evaluate the value of the bank W of the digital signal u converted and output by the upper object analog/digital conversion_circuit 1G and calculate the output current value again. Example ^ The value of the forward bias voltage VF is normal, and the output power p = forward bias % X current I relationship, the output power P is compared to the value, such as the output power is % watt, although the forward bias When the VF is 33 volts, the current! The value is about 1515 amps, so that the calculation control unit 2 is fine-touch-corresponding to the current 丨 value of the digital current control signal 201146074, if the value of the forward bias voltage VF exceeds the normal value range, that is, the forward bias voltage VF If the value is abnormal, the calculation control unit 20 directly sets the current I value to the minimum operating current value (Imin), so that the output digital current control signal 2 丨 is the minimum operating current value, so that the output power P is close to the preset value. In the fixed power state of 5 watts, the type of the calculation control unit 20 is not limited to the case of a micro processing unit in the present invention. a digital/analog conversion control circuit 3B, coupled to the calculation control unit 2 and the constant current driving circuit 220 in the above-described light-emitting one-pole lamp 200, to calculate the digital current control signal 21 outputted by the calculation control unit το 20 Converting to a corresponding current value _ analog current control signal 31 output, the analog current control signal 31 is fed back to the certain current driving circuit 22A of the light emitting diode lamp 2〇〇, so that the constant current driving circuit 22〇 The current is calculated and calculated by the control unit 2 驱动 to drive the LED array 21 in the LED illuminator 200, and the output power of the illuminating diode 200 is close to the constant power. The effect of the state. A power supply circuit 40' connects the analog/digital conversion detection circuit 10, the calculation control unit 7G 20, and the digital/analog conversion control circuit 30 to provide the analog/digital conversion detection circuit 10, the calculation control unit 2, and the digits/ The analog conversion control circuit 3 〇 required red power supply 'the power supply circuit 4 〇 power input mode is not limited, in the present invention # series to connect the light-emitting diode lamp 2 〇〇 LED array For example, the power supply of 210 is used to convert the power supply into the above-mentioned various types of digital/digital conversion detecting circuit 10, the calculation control unit 20, and the digital/class conversion control circuit 3G. The power circuit 40 is a power supply mode for providing a DC battery or a DC power supply. It is also a mode of the present invention. In other words, the LED output power adjusting device 100 of the present invention can be directly incorporated into the battery. In the circuit of the light-emitting diode lamp 200, or a circuit device of the same, it may be connected to the light-emitting diode lamp 200. Please refer to the second figure, which is a flowchart of the method for adjusting the output power of the LED according to the present invention, and the steps thereof include: 201146074 (300) starts; (10) = the forward bias of the LED, by the analogy / Number, forward bias y = 1 (320) == 彳 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The calculation control unit % evaluates the value of the forward bias voltage 唬11 outputted by the step-by-step t/digit conversion detecting circuit 1〇, if normal, who
步驟340 ; 禾正吊進仃步驟350，如不正常則進行 _)設練出電流為最小工作電流，由步驟％ Ϊ輸出發光^極體燈具所需之最小工作電 數位電流控制矾號21 ’進行步驟36〇 ; (350)計算及決定輸出電流，由步驟33〇之計算控制單㈣依 順向偏壓❿電流1關係，以定功率方式計算決定 該輸出電流I之值，並輸出數位電流控制訊號21; (360)將電流值轉換成類比電流控制訊號輸出，將步驟挪或 制單元20輸出對應電流值之數㈣流控制訊 諕，拍該數位/類比轉換控制電路3〇轉換成一類比 制訊號31輸出；及 (370)類比電流控制訊號回饋控制定電流源輸出電流，將步驟挪 經數位/類比轉換控制電路3〇輸出之類比電流控制訊號^ 回，至發光一極體燈具2〇〇負載之定電流驅動電路22〇，以 令Ϊ定電流驅動電路220輸出步驟340或步驟350之計算控 制單兀20所設定輸出電流值之電流給發光二極體燈具· 之發光二極體陣列210 ’使該發光二極體燈具勘之輸出功 率Ρ為接近定功率之狀態，重覆步驟31〇。 請再參閱第三圖所示，為本發明之發光二極體輸出功率調整 201146074 裝置及其方法之順向偏壓VF實際實驗數據圖，其中 極體燈具200之發光二極體陣列21〇的順向偏壓州遺運轉時間^ 化之函數曲顧，從碰w之值姐著溫度麵境變 該縱向軸為電壓V，該橫向軸為時問τ， 換偵測電路10實際偵測而得之順向偏壓VP之函數曲線。 ，再配合第四_示，為未加設本發明之發光二極體輸 率調t裝置100的發光二極_具細與加設本發明之 體輸出功率調整裝置100的發光二極體燈具20 ί數曲線，其中，第-電流曲線η代表未加縣發戈 體輸出功率調整裝置100的電流函數曲線，第二電流 發明之發光二極體輸出功率調整裝置觸的電流函數曲 ΐϊ—得該第一電流曲線11之值穩定時間 你亡士第一電机曲線11的值也較偏高，其平均值約在L6〜1 65 ，這是因為習知發光二频燈具200必需要預燒機至少 得與實際工作時的狀況近似的結果，但本發 雷厂调整裝置應在極短時間内即可自動調整至如第二 Π所示歡攸值，且第二電流曲線12之值遠較第= 流曲線II之值低，其平均值約在155安培左右。 率調所示’為未加設本發明之發光二極體輸出功 體2()()與加設本發明之發光二極 =功率調整裝請光 功率函代數 =為二r定功率，該縱 轴為時間T ’由料-功率曲線P1及第二功率曲線P2之比較= 9 201146074 第—功率崎P1之鋪定時曝長，且第—功率曲線ρι ίϊίΐ偏高’其平均值高過52·5瓦特，也就是必需花費長時間 :¾ t光二極體燈具職機才能獲得與實際工作時的狀況 以的輸出功率結果，但本發明之輸出功率調整裝置100在極短 ，間内即可自動讓如發光二極體燈具勘負載調整至第二功率曲 ，P2所㈣定且接近第三神^p3之定神狀態，且第二功 ^曲線P2之值遠較第—神曲線P1之值低，其平均值約在接近 50.5瓦特左右。 根據上述第三圖、第四圖及第五圖所示之順向偏壓vf、第一 電流=線Π、第二電流鱗12、第—神曲線？卜第二功率曲線 第一功率曲線P3間之比對得知’經由本發明中之類比/數位 夂φ偵則電路1〇、計算控制單元20及數位/類比轉換控制電路30 各電路動態閉迴路計算，並精確直接掌握控制發光二極體燈具2〇〇 之輸出電流值，也可以動態保持輸出功率維持在接近如第三功率 所示理想定功率錢’不會因為溫度、環境或其它因素造 變動’不需如習知以長時間預燒機測試方式調整鱼測試，可以 0幅提升生產速度，另外由於輸出功率接近定功率^下，亦不 需因為擔心輸出功率不足，而預留多餘的輸出功率容量，可以避 免不必要的輸出功率浪費，在麟節省彻效率上也可以有所提 升，所以從生產方面將可提高效率及降低生產成本，並可充分利 種發光二極體類型㈣使用，進-步提昇本發明之產業利 用1貝值。 【圖式簡單說明】 圖 第一圖係本發明之發光二極體輸出功率調整裝置之電路方塊 第二圖係本發明之發光二極體輸出功率調整方法之流程圖。 線圖 第二圖係本發明所應用之發光二極體燈具負载之順向偏壓曲 〇 第四圖係使用與未使用本發明之發光二極體輪出功率調整農 201146074 置之發光二極體燈具負載實際試驗之電流曲線圖。 第五圖係使用與未使用本發明之發光二極體輪出功率調整裝 置之發光二極體燈具負載實際試驗之輸出功率曲線圖。 x 【主要元件符號說明】 11 20 21 30 31 40 100發光二極體輸出功率調整裝置 10 類比/數位轉換偵測電路 數位訊號 計算控制單元 數位電流控制訊號 數位/類比轉換控制電路 類比電流控制訊號 電源電路 200發光二極體燈具 210發光二極體陣列 220定電流驅動電路 VF順向偏壓 第—電流曲線 第一電流曲線 第一功率曲線 第二功率曲線 第二功率曲線 開始 11 12 P1 P2 P3 300 310偵測發光二極體順向偏壓 Z，偵__向偏壓值轉換位訊號 33〇 順向偏壓是否正常 3 3輪出電流為最小工作電流 5十异及決定輪出電流 370 ΞΪί值轉換成類比電流控制訊號輸出 電流控制訊號回饋控制定電流源輪出電流Step 340; Wo is hoisted into step 350, if not, then _) set the current to the minimum operating current, and the minimum working electric digit required for the output of the illuminating body lamp is controlled by step % 21 21 ' Step (36): Calculate and determine the output current, and calculate the control unit (4) according to the forward bias voltage ❿ current 1 relationship in step 33, determine the value of the output current I by a constant power method, and output the digital current. The control signal 21; (360) converts the current value into an analog current control signal output, and outputs the corresponding current value to the step shifting unit 20 (four) flow control signal, and converts the digital/analog conversion control circuit 3 into an analogy The signal 31 output; and (370) analog current control signal feedback control constant current source output current, the step is shifted by the digital/analog conversion control circuit 3〇 output analog current control signal ^, to the light-emitting one-pole lamp 2〇 The constant current driving circuit 22〇 of the load is applied to cause the predetermined current driving circuit 220 to output the current of the output current value set by the control unit 20 of step 340 or step 350 to the light emitting diode A light emitting diode array having the · 210 'so that the output power of the lamp EXPLORATION emitting diode Ρ power close to a given state, the repeat step 31〇. Please refer to the third figure, which is a practical experimental data diagram of the forward bias voltage VF of the device and its method for adjusting the output power of the LED of the present invention, wherein the LED array of the polar body lamp 200 is 21 〇 The forward biased state of the running time of the state is the function of the function. From the value of the touch, the longitudinal axis is the voltage V, and the horizontal axis is the time τ, and the detection circuit 10 is actually detected. The curve of the forward bias VP is obtained. Further, in conjunction with the fourth embodiment, the light-emitting diode of the light-emitting diode rate adjusting device 100 of the present invention is not provided with the light-emitting diode lamp having the body output power adjusting device 100 of the present invention. 20 ί 曲线 curve, wherein the first current curve η represents a current function curve of the unsupplied output device 100, and the current function of the second output current adjusting device of the second current invention is obtained. The value of the first current curve 11 is stable. The value of the first motor curve 11 of your death is also relatively high, and the average value is about L6~1 65. This is because the conventional illuminating two-frequency luminaire 200 must be pre-burned. The machine must have at least a similar result to the actual working condition, but the lightning adjustment device should be automatically adjusted to the value shown in Figure 2 in a very short time, and the value of the second current curve 12 is far. It is lower than the value of the first = flow curve II, and its average value is about 155 amps. The rate modulation is shown as 'the light-emitting diode output body 2()() without the addition of the present invention, and the light-emitting diode of the present invention is added = the power adjustment device optical power function algebra = two constant power, The vertical axis is the time T 'comparison of the material-power curve P1 and the second power curve P2 = 9 201146074 The first power ramp P1 is timed and the first power curve ρι ίϊίΐ is higher than its average value is higher than 52 · 5 watts, that is, it takes a long time: the 3⁄4 t optical diode lamp occupational machine can obtain the output power result with the actual working condition, but the output power adjusting device 100 of the present invention can be extremely short. Automatically adjust the load of the light-emitting diode lamp to the second power curve, P2 (4) is set and close to the state of the god of the third god ^p3, and the value of the second work curve P2 is far greater than the value of the first curve P1 Low, the average is about 50.5 watts or so. According to the above-mentioned third, fourth and fifth figures, the forward bias voltage vf, the first current = the line Π, the second current scale 12, the first curve? The ratio between the first power curve P3 of the second power curve is known as 'dynamic closed loop of each circuit through the analog/digital 夂 φ circuit 1 〇, the calculation control unit 20 and the digital/analog conversion control circuit 30 in the present invention. Calculate and accurately control the output current value of the LEDs of the LEDs. It can also dynamically maintain the output power close to the ideal power as shown by the third power. 'It won't be caused by temperature, environment or other factors. The change 'does not need to adjust the fish test according to the long-term pre-burner test method, which can increase the production speed by 0. In addition, since the output power is close to the fixed power, there is no need to reserve excess for worrying about insufficient output power. The output power capacity can avoid unnecessary waste of output power, and can also improve the efficiency of saving the lin, so it can improve the efficiency and reduce the production cost from the production side, and can fully utilize the type of the light-emitting diode (4). The step-by-step improvement of the industry of the invention utilizes 1 beta. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit block diagram of an output power adjustment device for a light-emitting diode of the present invention. FIG. 2 is a flow chart showing a method for adjusting output power of a light-emitting diode of the present invention. The second diagram of the line diagram is the forward bias curve of the load of the LED lamp used in the present invention. The fourth diagram is used to adjust the power of the LEDs of the invention. The current curve of the actual test of the body lamp load. The fifth graph is an output power graph of an actual test using a light-emitting diode lamp with a light-emitting diode power-off adjusting device of the present invention. x [Main component symbol description] 11 20 21 30 31 40 100 LED output power adjustment device 10 Analog/digital conversion detection circuit Digital signal calculation control unit Digital current control signal Digital/analog conversion control circuit analog current control signal power supply Circuit 200 light-emitting diode lamp 210 light-emitting diode array 220 constant current drive circuit VF forward bias first - current curve first current curve first power curve second power curve second power curve start 11 12 P1 P2 P3 300 310 detects the illuminating diode forward bias Z, detecting __ bias value conversion bit signal 33 〇 forward bias is normal 3 3 round current is the minimum operating current 5 ten different and determines the wheel current 370 ΞΪ ΞΪ Value converted to analog current control signal output current control signal feedback control constant current source wheel current