201101928 六、發明說明： 【發明所屬之技術領域】 ⑽οι] 本發明涉及一種照明系統及照明控制方法，尤其涉及一 種LED照明系統及其控制方法。 【先前技術】 ⑽02] 現有LED照明系統多採用交流電源供電，在給LED照明供 電之前，所述交流電源要經過變壓、變流之後轉換為符 合LED照明要求之電壓、電流。現有之電源轉換系統一般 都係先通過一 A C / D C轉換器將高屋交流電轉換為低壓直流 電’再將轉換後之低壓直流電通過一DC/DC轉換器轉換為 驅動LED燈所需要之恒流電。現有LED照明系統中，AC/ DC (alternating current to direct current :交 流到直流）轉換器之輸出電壓為與系統之預設值相匹配 之固定值，然而，在不同情況（如溫度）下所述DC/DC ( direct current to direct current :直流到直流 )轉換器所需要之電壓值可能不同。如果該輸出電壓過 高則多餘之電壓消耗於DC/DC轉換器中，造成DC/DC轉換 器之轉換效率降低，同時會造成DC/DC轉換器發熱影響其 使用壽命及可靠性。如果該輸出電壓過低則不能達到led 之預期照明效果。 【發明内容】 [0003] 有鑒於此’有必要提供一種可實現較高電能轉換效率及 穩定發光功率之LED照明系統及LED照明控制方法。 [0004] —種LED照明系統，其包括一感測器，一與所述感測器相 連之記憶體’一與所述記憶體相連之控制器，一與所述 098121460 表單編號A0101 第4頁/共15頁 0982036479-0 201101928 [0005] [0006] 〇 [0007] [0008] 〇 [0009] [0010] 控制器相連之ac/dc轉換器，一與所述AC/DC轉換 器及所 述控制器相連之DC/DC轉換器，一與所述DC/DC轉換器相 連之LED燈，以及一與所述DC/DC轉換器之輸出端及所述 記憶體相連之電流偵測器。 所述感測器用於偵測所述LED燈周圍之環境溫度，得到溫 度訊息。 所述記憶體用於存儲所述溫度訊息以及所述LED照明系統 之預設之溫度-電壓對照訊息。 所述控制器用於讀取所述記憶體内之溫度訊息，並將溫 度訊息與所述預設之溫度-電壓對照訊息松比較，得出溫 度訊息所對應之電壓值，根據比較結果向所述AC/DC轉換 器輸出電壓調節指令》 所述AC/DC轉換器用於將交流電轉換為直流電，並根據所 述電壓調節指令調節輸出電壓，並將該經過調壓後之直 流電輸出給所述DC/DC轉換器。 所述DC/DC轉換器用於對來肖;所述AC/DC轉換器之直流電 進行變流，輸出恒流電。 所述電流偵測器用於偵測所述DC/DC轉換器 <輸出電流， 並將所述電流偵測結果傳送至所述記憶體存儲，所述控 制器根據所述電流偵測結果控制所述DC/DC轉換器將輸出 電流穩定在最符合所述LED燈照明要求之值。 一種應用所述LED照明系統之LED照明控制方法，其包括 如下步驟 098121460 表單編號A0101 第5頁/共15頁 0982036479-0 [0011] 201101928 [0012] 偵測LED燈周圍之環境溫度，得到溫度訊息。 [0013] 存儲所述溫度訊息。 [0014] 將該溫度訊息與系統之預設溫度-電壓對照訊息相比較。 [0015] 根據比較結果調整所述AC/DC轉換器之輸出電壓。 [0016] 偵測DC/DC轉換器之輸出電流，得到電流偵測結果。 [0017] 存儲該電流偵測結果。 [0018] 根據所述電流偵測結果調整所述DC/DC轉換器之輸出電流 〇 [0019] 相對先前技術，所述之LED照明系統及控制方法利用所述 感測器及所述電流感測器偵測LED燈所處之環境，並根據 LED燈所處之環境自動調整AC/DC轉換器至最佳輸出電壓 ，同時偵測所述DC/DC轉換器之輸出電流，根據輸出電流 之變化調整DC/DC轉換器輸出電流至所述最符合所述LED 燈之值，既可以保證LED照明系統之電源轉換功率，又可 以保證LED燈之發光功率，同時延長led照明系統之使用 壽命。 【實施方式】 [0020] 下面將結合附圖對本發明作一具體介紹。 [0021] 請參閱圖1，所示為本發明較佳實施方式提供之一種 照明系統100之功能模組圖。所述LED照明系統1〇〇包括 一感測器10，一與所述感測器1〇相連之記憶體2〇，一與 所述記憶體20相連之控制器3〇，一與所述控制器3〇相連 之AC/DC轉換器40，一與所述AC/DC轉換器4〇及所述控制 098121460 表單編號A0101 第6頁/共15頁 0982036479-0 201101928 器30相連之DC/DC轉換器50，一與所述DC/DC轉換器50 相連之LED燈60 ’以及一與所述DC/DC轉換器50之輸出端 及所述記憶體20相連之電流偵測器70。 [0022] 所述感測器10位於所述LED燈60附近，用於偵測所述LED 燈60周圍之環境溫度，得到溫度訊息，並將溫度訊息傳 輸至所述記憶體20。 [0023] Ο ο 所述記憶體20用於存儲所述溫度訊息以及所述LED照明系 統100之預設溫度-電壓對照訊息。由於LED燈之最佳工作 電壓受溫度之影響較大，所述最佳工作電壓為使所LED燈 長時間正常工作之最適電壓值。在溫度較高時，LED燈之 最佳工作電壓降低；而溫度降低時，LED燈之最佳工作電 壓上升》本實施方式中，所述預設溫度-電壓對照訊息為 所述LED燈60在不同溫度下所對應之所述ac/dc轉換器4〇 之最佳輸出電壓’即可以讓所述LED燈6〇長時間正常工作 之AC/DC轉換器40之最低輸出電廑。具體地，所述記憶體 20包括一唯讀記憶體2〇1以及一隨機存取記憶體2〇2，所 述唯讀記憶體201用於存儲;所:述LEp照明系統1〇〇之預設 溫度-電壓對照訊息，所述隨機存取記憶體2〇2用於存儲 所述溫度訊息。 [0024] 所述控制器30用於讀取存儲於所述隨機存取記憶體2〇2之 溫度訊息’並將溫度訊息與所述唯讀記憶體2〇1内預設之 孤度-電壓對照讯息相比較，得出溫度訊息所對應之所述 AC/DC轉換器40之最佳輸出電壓’根據比較結果向所述 AC/DC轉換器40輸出電壓調節指令。 098121460 表單編號A0101 第7頁/共15頁 0982036479-0 201101928 [0025]所述AC/DC轉換器40用於將交流電轉換為直流電，其可以 根據所述控制器30之電壓調節指令，調節所述低壓直流 電之電壓，使其根據不同之需要上升或者下降至最佳輸 出電壓，並將該經過調壓後之直流電輸出給所述DC/DC轉 換器50。 [0026] 所述DC/DC轉換器50用於對來自所述AC/DC轉換器4〇之直 流電進行變流，輸出恒流電。由於在LED照明領域，為保 證LED燈具有穩定之發光功率（亮度），要將LED燈之供 電電流穩疋在一個恒定之值，固此本實施方式中，所述 DC/DC轉換器50之輸出電逾為像所^LE灯燈6 〇維持一固定 亮度所需要之恒定電流。A · ew ’… [0027] 所述LED燈60將來自所述DC/DC轉換器5〇之桓流電之電能 轉換為光能進行照明。 [0028] 所述電流偵測器7 〇與所述D C / D C轉換器5 0之輸出端相連 ，用於偵測所述DC/DC轉換g50之輸獻意施，並將所述電 流偵測結果送所述記憶體20存儲，所述控制器3〇根據所 述電流偵測結果控制所述dC/dc轉換器將輸出電流穩定在 符合所述LED燈60照明要求之電流值，如此可以維持所述 LED燈60之發光功率，保證照明之效果不會下降。 [0029] 請參閱圖2，所述本發明照明系統控制方法之流程圖，其 包括如下步驟： [0030] S801，偵測LED燈60之溫度，得到溫度訊息。該偵測動 作可以以一定之時間間隔進行，間隔時間之長短可以由 系統預設。 0982036479-0 098121460 表單編號A0101 第8頁/共15頁 201101928 [0031] [0032] [0033] Ο [0034] [0035] [0036] ❹ [0037] 098121460 S802，存儲所述溫度訊息。 S803 ’將該溫度訊息與系統之預設溫度-電壓對照訊息相 比較。本實施方式中，先確定所述溫度訊息所代表之LED 燈60之溫度，再將該溫度與預設溫度-電壓對照訊息相比 較’得到該溫度下所對應之AC/DC轉換器40之最佳輸出電 壓。 S804，根據比較結果調整所述ac/DC轉換器40之輸出電 壓。本實施方式中，所述AC/DC轉換器40根據所確定之最 佳輸出電壓控制調整其輸出電壓至最佳輸出電壓值。 S805，偵測DC/DC轉換器50之輸出電流，得到電流偵測 結果。 ^ S806 ’存儲該電流偵測結果。 S807，根據所述電流偵測結果調整所述dC/dc轉換器5〇 之輸出電流。如果電流偵結果為輸出策溆未變，則Dc/ -：： > ,； ：~·; ；：； DC轉換器50維持原輸出電流；如果電舞债測結果為輸出 電流下降，貝DC/ 轉換器5 0升高輸出電流至原輸出電流 ，保證LED燈60之發光功率不會降低；如果電流偵測結果 為輸出電流上升’貝^DC/DC轉換器50降低輸出電流至原輸 出電流，使得LED燈60之工作電流不至過高而影響其使用 壽命。 在完成所述AC/DC轉換器40之電壓調整及所述dc/DC轉換 器50之電流調整後’所述LED照明系統1〇〇返回步驟S801 ，以即時監控該LED照明系統1〇〇。 表單編號A0101 第9頁/共15頁 0982036479-0 201101928 [0038] 所述之LED照明系統及控制 θ &利用所述感測器及所述電 流感測器偵測LED燈所處之5班比 長境，並根據LED所述之環境 自動調整AC/DC轉換器至最佳 取值輸出電壓，同時偵測所述 隱轉換器之輸出電流’根據輪出電流之變化調整DC/ DC轉換器輸出電流輯述最符合所述LED燈之值，既可以 保證LED照明系統之電源轉換功率，又可以保證le])燈之 發光功率，同時延長LED照明系統之使用壽命。 [0039] 综上所述，本發明確已符合發明專利之要件，遂依法提 出專利申請。惟，以上所述者僅為本發明之較佳實施方 式，自不能以此限制本案之％請專利範圍。舉凡熟悉本 案技藝之人士援依本發明之精神所作之等效修飾或變化 ’皆應涵蓋於以下申請專利範圍内。 【圖式簡單說明】 [0040] 圖1係本發明LED照明系統之功能模組圖； [麵]圖2係本發明L E D照明控制方法之流程圖 【主要元件符號說明】 LED照明系統 100 感測器 10 記憶體 20 唯讀記憶體 201 隨機存取記憶 202 控制器 30 體 AC/DC轉換器 40 DC/DC轉換器 50 LED燈 60 電流偵測器 70 098121460 表單編號A0101 第10頁/共15頁 0982036479-0201101928 VI. Description of the Invention: [Technical Field of the Invention] (10) οι The present invention relates to a lighting system and a lighting control method, and more particularly to an LED lighting system and a control method therefor. [Prior Art] (10)02] Existing LED lighting systems are mostly powered by AC power. Before powering LED lighting, the AC power supply is converted into voltage and current that meet the requirements of LED lighting after being transformed and converted. The existing power conversion system generally converts high-rise alternating current into low-voltage direct current through an A C / D C converter, and then converts the converted low-voltage direct current into a constant current required for driving the LED lamp through a DC/DC converter. In the existing LED lighting system, the output voltage of the AC/DC (alternating current to direct current) converter is a fixed value matching the preset value of the system, however, in different situations (such as temperature) The DC/DC (direct current to direct current) converter may require different voltage values. If the output voltage is too high, the excess voltage is consumed in the DC/DC converter, which causes the conversion efficiency of the DC/DC converter to decrease, and causes the DC/DC converter to heat up to affect its service life and reliability. If the output voltage is too low, the expected illumination effect of the LED cannot be achieved. SUMMARY OF THE INVENTION [0003] In view of the above, it is necessary to provide an LED illumination system and an LED illumination control method that can achieve higher power conversion efficiency and stable illumination power. [0004] An LED lighting system includes a sensor, a memory connected to the sensor, a controller connected to the memory, and the 098121460 form number A0101, page 4 / 15 pages 0982036479-0 201101928 [0005] [0006] [0007] [0008] [0009] [0010] The controller is connected to an ac/dc converter, and the AC/DC converter and the A DC/DC converter connected to the controller, an LED lamp connected to the DC/DC converter, and a current detector connected to the output of the DC/DC converter and the memory. The sensor is configured to detect an ambient temperature around the LED lamp to obtain a temperature message. The memory is for storing the temperature message and a preset temperature-voltage control message of the LED illumination system. The controller is configured to read a temperature message in the memory, and compare the temperature message with the preset temperature-voltage comparison message to obtain a voltage value corresponding to the temperature message, according to the comparison result AC/DC converter output voltage adjustment command" The AC/DC converter is configured to convert alternating current into direct current, adjust an output voltage according to the voltage adjustment command, and output the regulated direct current to the DC/ DC converter. The DC/DC converter is used to convert the direct current of the AC/DC converter, and output constant current. The current detector is configured to detect the DC/DC converter < output current, and transmit the current detection result to the memory storage, and the controller controls the current detection result according to the current detection result The DC/DC converter stabilizes the output current to a value that best meets the illumination requirements of the LED lamp. An LED lighting control method using the LED lighting system, comprising the following steps 098121460 Form No. A0101 Page 5 / 15 pages 0992036479-0 [0011] 201101928 [0012] Detecting the ambient temperature around the LED lamp, obtaining a temperature message . [0013] storing the temperature message. [0014] comparing the temperature message with a preset temperature-voltage comparison message of the system. [0015] Adjusting an output voltage of the AC/DC converter according to a comparison result. [0016] detecting the output current of the DC/DC converter to obtain a current detection result. [0017] storing the current detection result. [0018] adjusting an output current of the DC/DC converter according to the current detection result [0019] Compared to the prior art, the LED illumination system and control method utilizes the sensor and the current sensing Detecting the environment in which the LED lamp is located, and automatically adjusting the AC/DC converter to the optimal output voltage according to the environment in which the LED lamp is located, and detecting the output current of the DC/DC converter according to the change of the output current Adjusting the output current of the DC/DC converter to the value that best matches the LED lamp can not only ensure the power conversion power of the LED lighting system, but also ensure the luminous power of the LED lamp and prolong the service life of the LED lighting system. [Embodiment] The present invention will be specifically described below with reference to the accompanying drawings. [0021] Please refer to FIG. 1, which is a functional block diagram of a lighting system 100 according to a preferred embodiment of the present invention. The LED illumination system 1 includes a sensor 10, a memory 2 connected to the sensor 1A, a controller connected to the memory 20, and a control The AC/DC converter 40 connected to the AC/DC converter 40, and the DC/DC converter connected to the AC/DC converter 4 and the control 098121460 Form No. A0101 Page 6 of 15 page 0982036479-0 201101928 The device 50 has an LED lamp 60' connected to the DC/DC converter 50 and a current detector 70 connected to the output end of the DC/DC converter 50 and the memory 20. [0022] The sensor 10 is located near the LED lamp 60 for detecting an ambient temperature around the LED lamp 60, obtaining a temperature message, and transmitting a temperature message to the memory 20. [0023] The memory 20 is configured to store the temperature message and a preset temperature-voltage control message of the LED lighting system 100. Since the optimum operating voltage of the LED lamp is greatly affected by the temperature, the optimum operating voltage is an optimum voltage value for the LED lamp to operate normally for a long time. When the temperature is high, the optimal operating voltage of the LED lamp is lowered; and when the temperature is lowered, the optimal operating voltage of the LED lamp is increased. In the embodiment, the preset temperature-voltage comparison message is that the LED lamp 60 is The optimum output voltage of the ac/dc converter 4 at the corresponding temperature can be the lowest output of the AC/DC converter 40 that can operate the LED lamp 6 for a long time. Specifically, the memory 20 includes a read-only memory 2〇1 and a random access memory 2〇2, and the read-only memory 201 is used for storage; A temperature-voltage control message is provided, and the random access memory 2〇2 is used to store the temperature message. [0024] The controller 30 is configured to read the temperature information stored in the random access memory 2〇2 and preset the temperature information to the orphan-voltage in the read-only memory 2〇1. Comparing the comparison information, it is determined that the optimum output voltage of the AC/DC converter 40 corresponding to the temperature message outputs a voltage adjustment command to the AC/DC converter 40 according to the comparison result. 098121460 Form No. A0101 Page 7 of 15 0982036479-0 201101928 [0025] The AC/DC converter 40 is configured to convert alternating current into direct current, which can be adjusted according to a voltage adjustment command of the controller 30. The voltage of the low voltage direct current is increased or decreased to an optimum output voltage according to different needs, and the regulated DC power is output to the DC/DC converter 50. The DC/DC converter 50 is configured to convert a direct current from the AC/DC converter 4 to output a constant current. In the field of LED lighting, in order to ensure that the LED lamp has stable luminous power (brightness), the power supply current of the LED lamp is stabilized at a constant value. In this embodiment, the DC/DC converter 50 is The output power exceeds the constant current required to maintain a fixed brightness like the LED light 6 〇. A · ew ’... [0027] The LED lamp 60 converts the turbulent power from the DC/DC converter 5 into light energy for illumination. [0028] The current detector 7 is connected to the output end of the DC/DC converter 50 for detecting the DC/DC conversion g50, and detecting the current The result is sent to the memory 20 for storage, and the controller 3 controls the dC/dc converter to stabilize the output current according to the current value of the LED lamp 60 illumination requirement according to the current detection result, so that the controller 3 The luminous power of the LED lamp 60 ensures that the effect of the illumination does not decrease. Referring to FIG. 2, a flowchart of a method for controlling a lighting system of the present invention includes the following steps: [0030] S801, detecting a temperature of the LED lamp 60 to obtain a temperature message. The detection action can be performed at regular intervals, and the length of the interval can be preset by the system. 0982036479-0 098121460 Form No. A0101 Page 8 of 15 201101928 [0033] [0033] [0036] [0036] [0037] 098121460 S802, storing the temperature message. S803 ' compares the temperature message to the system's preset temperature-voltage comparison message. In this embodiment, the temperature of the LED lamp 60 represented by the temperature message is first determined, and then the temperature is compared with a preset temperature-voltage comparison message to obtain the highest AC/DC converter 40 corresponding to the temperature. Good output voltage. S804, adjusting an output voltage of the ac/DC converter 40 according to the comparison result. In this embodiment, the AC/DC converter 40 adjusts its output voltage to an optimum output voltage value in accordance with the determined optimal output voltage control. S805, detecting the output current of the DC/DC converter 50 to obtain a current detection result. ^ S806 ' stores the current detection result. S807, adjusting an output current of the dC/dc converter 5〇 according to the current detection result. If the current detection result is unchanged for the output, then Dc/ -:: >,;:~·;;:; DC converter 50 maintains the original output current; if the electric dance debt test results in output current drop, Bay DC / Converter 50 raises the output current to the original output current to ensure that the LED power of the LED lamp 60 does not decrease; if the current detection result is the output current rises, the DC/DC converter 50 reduces the output current to the original output current. Therefore, the operating current of the LED lamp 60 is not too high and affects its service life. After the voltage adjustment of the AC/DC converter 40 and the current adjustment of the dc/DC converter 50 are completed, the LED illumination system 1 returns to step S801 to immediately monitor the LED illumination system 1〇〇. Form No. A0101 Page 9 / 15 pages 0992036479-0 201101928 [0038] The LED lighting system and control θ & use the sensor and the current sensor to detect the 5 lights of the LED lamp Than the long-term, and automatically adjust the AC/DC converter to the best value of the output voltage according to the environment described by the LED, and detect the output current of the hidden converter 'Adjust the DC/DC converter according to the change of the wheel current The output current series best meets the value of the LED lamp, which can ensure the power conversion power of the LED lighting system, and can ensure the luminous power of the lamp and prolong the service life of the LED lighting system. [0039] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent in this case. Equivalent modifications or variations made by persons skilled in the art in light of the present invention are intended to be included within the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS [0040] FIG. 1 is a functional block diagram of an LED lighting system of the present invention; [FIG. 2] FIG. 2 is a flow chart of a LED lighting control method of the present invention [Major component symbol description] LED lighting system 100 sensing 10 memory 20 read only memory 201 random access memory 202 controller 30 body AC / DC converter 40 DC / DC converter 50 LED light 60 current detector 70 098121460 form number A0101 page 10 / a total of 15 pages 0982036479-0