TWI501694B - Light emitting diode module correct system and method thereof - Google Patents

Light emitting diode module correct system and method thereof Download PDF

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TWI501694B
TWI501694B TW101143307A TW101143307A TWI501694B TW I501694 B TWI501694 B TW I501694B TW 101143307 A TW101143307 A TW 101143307A TW 101143307 A TW101143307 A TW 101143307A TW I501694 B TWI501694 B TW I501694B
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unit
led
current
value
emitting diode
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TW201422048A (en
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Shengyun Hou
Tonchuro Huang
Kuoteng Hung
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Artilect Green Co Ltd
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Description

發光二極體模組校正系統及其校正方法Light-emitting diode module calibration system and calibration method thereof

本發明是有關於一種發光二極體模組校正系統及其校正方法，且特別是有關一種具有內置式檢測裝置之發光二極體校正系統及其校正方法。The invention relates to a light-emitting diode module calibration system and a calibration method thereof, and in particular to a light-emitting diode calibration system with a built-in detection device and a calibration method thereof.

LED裝置之發光亮度正比於其順向驅動電流，驅動電流過大會引起LED裝置光衰減，驅動電流過小時則會影響LED裝置之發光強度，故LED裝置的驅動需提供恆流電源。而LED裝置驅動方式可分為定電壓驅動及定電流驅動，但LED裝置如使用定電壓驅動容易因順向電壓的誤差，造成流入LED裝置的電流不穩定。The brightness of the LED device is proportional to its forward driving current. If the driving current is too large, the LED device will be attenuated. If the driving current is too small, the LED device will be affected. Therefore, the driving of the LED device needs to provide a constant current power supply. The driving method of the LED device can be divided into constant voltage driving and constant current driving, but the LED device is easily driven by the constant voltage, and the current flowing into the LED device is unstable due to the error of the forward voltage.

因此在大多數的照明應用中，LED裝置一般採用定電流驅動法，以檢測電流並控制固定順向驅動電流來調節LED裝置之工作週期以達到穩定的LED裝置驅動電流，進而維持LED裝置的發光亮度。Therefore, in most lighting applications, the LED device generally uses a constant current driving method to detect the current and control the fixed forward driving current to adjust the working period of the LED device to achieve a stable LED device driving current, thereby maintaining the illumination of the LED device. brightness.

檢測LED裝置電流之方式為使用一電流檢測電阻(Sense Resistor)，電流檢測電阻兩端之電壓與待測電流成正比，因此能量測出LED裝置之電流。習知LED裝置中，將電流檢測電阻置於LED驅動IC的內部，如此可減少LED電路板(Printed Circuit Board,PCB)的元件，藉此降低製造成本，但上述方法因無法得知LED的實際驅動電流，故整體LED裝置較不具可靠性。The way to detect the current of the LED device is to use a current sense resistor (Sense Resistor). The voltage across the current sense resistor is proportional to the current to be measured, so the energy of the LED device is measured. In the conventional LED device, the current detecting resistor is placed inside the LED driving IC, so that the components of the printed circuit board (PCB) can be reduced, thereby reducing the manufacturing cost, but the above method cannot know the actual LED. The driving current is so that the overall LED device is less reliable.

本發明之目的在於提供一種發光二極體模組校正系統及其校正方法，能較準確獲得LED裝置之狀態資訊，藉此提高LED裝置可靠度。The object of the present invention is to provide a calibration module for a light-emitting diode module and a calibration method thereof, which can accurately obtain state information of the LED device, thereby improving the reliability of the LED device.

因此，本發明之一結構態樣之一實施方式是在提供一種發光二極體模組校正系統，其包含一發光二極體模組、一外部監測單元、一記憶比對單元及一校正單元。發光二極體模組包含一發光二極體單元、一控制單元、一訊號轉換單元及一內部監測單元。控制單元輸出一第一輸入訊號，訊號轉換單元轉換第一輸入訊號為一第二輸入訊號，訊號轉換單元輸出第二輸入訊號控制發光二極體單元，內部監測單元監測發光二極體單元並輸出一第一輸出狀態。外部監測單元電性連接發光二極體模組，且外部監測單元監測發光二極體模組並輸出一第二輸出狀態。記憶比對單元電性連接發光二極體模組、外部監測單元及內部監測單元，且記憶比對單元比對並記憶產生一比對表以供往後校準。校正單元電性連接發光二極體模組、記憶比對單元及外部監測單元，校正單元輸出一命令訊號用以命令發光二極體模組。Therefore, one embodiment of the present invention provides a light-emitting diode module calibration system including a light-emitting diode module, an external monitoring unit, a memory comparison unit, and a correction unit. . The LED module includes a light emitting diode unit, a control unit, a signal conversion unit and an internal monitoring unit. The control unit outputs a first input signal, the signal conversion unit converts the first input signal into a second input signal, the signal conversion unit outputs a second input signal to control the light emitting diode unit, and the internal monitoring unit monitors the light emitting diode unit and outputs A first output state. The external monitoring unit is electrically connected to the LED module, and the external monitoring unit monitors the LED module and outputs a second output state. The memory comparison unit is electrically connected to the LED module, the external monitoring unit and the internal monitoring unit, and the memory comparison unit compares and memorizes to generate an alignment table for later calibration. The calibration unit is electrically connected to the LED module, the memory comparison unit and the external monitoring unit, and the correction unit outputs a command signal for commanding the LED module.

根據本發明一實施例，上述發光二極體模組校正系統更可包含一偵錯單元，電性連接發光二極體模組及校正單元，用以確認發光二極體模組是否正常工作。且比對表輸出至一外接顯示裝置。上述比對表包含命令訊號、第二輸入訊號、第一輸出狀態及第二輸出狀態。上述命令訊號可為發光二極體單元之一起始輸出亮度比值，第二輸入訊號 可為發光二極體單元之一起始驅動電流值或發光二極體單元之一轉換輸出亮度比值，第一輸出狀態可為發光二極體單元之一工作週期值，第二輸出狀態可為發光二極體單元之一實際驅動電流值。且上述實際驅動電流值、工作週期值、起始驅動電流值、起始輸出亮度比值及轉換輸出亮度比值可為複數個。According to an embodiment of the invention, the LED module calibration system further includes a debug unit electrically connected to the LED module and the calibration unit for confirming whether the LED module is working normally. And the comparison table is output to an external display device. The comparison table includes a command signal, a second input signal, a first output state, and a second output state. The command signal may be an initial output brightness ratio of the light emitting diode unit, and the second input signal The first driving state may be a working period value of one of the light emitting diode units, and the second output state may be a light emitting state. One of the diode units actually drives the current value. The actual drive current value, the duty cycle value, the initial drive current value, the initial output luminance ratio, and the converted output luminance ratio may be plural.

上述之第一輸出狀態係發光二極體單元之開短路值、電壓、電流、色溫或亮度。第二輸出狀態係發光二極體單元之之開短路值、電壓、電流、色溫或亮度。上述發光二極體模組更包含一驅動單元及一傳輸單元。The first output state described above is an open short circuit value, voltage, current, color temperature or brightness of the light emitting diode unit. The second output state is an open short circuit value, voltage, current, color temperature or brightness of the light emitting diode unit. The light emitting diode module further includes a driving unit and a transmission unit.

本發明之一方法態樣之一實施方式是在提供一種上述發光二極體模組校正系統之校正方法，其包含使校正單元輸出一命令訊號至控制單元；使控制單元輸出第一輸入訊號；使訊號轉換單元轉換第一輸入訊號並輸出第二輸入訊號；使內部監測單元輸出第一輸出狀態；使外部監測單元輸出第二輸出狀態；以及使記憶比對單元比對並記憶產生比對表。One embodiment of the method of the present invention provides a method for correcting a calibration module of the LED module, comprising: causing the correction unit to output a command signal to the control unit; and causing the control unit to output the first input signal; The signal conversion unit converts the first input signal and outputs the second input signal; causes the internal monitoring unit to output the first output state; causes the external monitoring unit to output the second output state; and compares and memorizes the memory comparison unit to generate a comparison table .

根據本發明一實施例，上述比對表包含命令訊號、第二輸入訊號、第一輸出狀態及第二輸出狀態。上述命令訊號可為發光二極體單元之一起始輸出亮度比值，第二輸入訊號可為發光二極體單元之一起始驅動電流值或發光二極體單元之一轉換輸出亮度比值，第一輸出狀態可為發光二極體單元之一工作週期值，第二輸出狀態可為發光二極體單元之一實際驅動電流值。且上述實際驅動電流值、工作週期值、起始驅動電流值、起始輸出亮度比值及轉換輸出 亮度比值可為複數個。According to an embodiment of the invention, the comparison table includes a command signal, a second input signal, a first output state, and a second output state. The command signal may be an initial output luminance ratio of the LED unit, and the second input signal may be an initial driving current value of the LED unit or a conversion output luminance ratio of the LED unit, the first output. The state may be one duty cycle value of the light emitting diode unit, and the second output state may be an actual driving current value of one of the light emitting diode cells. And the above actual driving current value, duty cycle value, initial driving current value, initial output luminance ratio and conversion output The brightness ratio can be plural.

上述之第一輸出狀態係發光二極體單元之開短路值、電壓、電流、色溫或亮度。第二輸出狀態係發光二極體單元之之開短路值、電壓、電流、色溫或亮度。The first output state described above is an open short circuit value, voltage, current, color temperature or brightness of the light emitting diode unit. The second output state is an open short circuit value, voltage, current, color temperature or brightness of the light emitting diode unit.

藉由本發明之發光二極體模組校正系統及其校正方法，能正確獲得一比對表，由於比對表包含驅動LED裝置時之輸出狀態，比較此比對表及控制單元之第一輸入訊號，即可得知LED裝置目前實際的使用狀態，且可針對不同LED裝置於生產時產生之些微差異藉由本發明校正而取得正確的訊號，也可藉由本發明之校正使不同LED裝置輸出相同結果。By using the LED module calibration system and the calibration method thereof, a comparison table can be correctly obtained. Since the comparison table includes an output state when the LED device is driven, the comparison table and the first input of the control unit are compared. The signal can be used to know the current actual state of use of the LED device, and the correct signal can be obtained by correcting the invention for the slight difference generated by different LED devices during production, and the same LED device output can be output by the correction of the present invention. result.

請參照第1圖，其係繪示依照本發明一實施方式的一種發光二極體模組之校正系統示意圖。發光二極體模組校正系統包含一校正單元100、一發光二極體模組200、一外部監測單元300、一記憶比對單元400、一偵錯單元500及一電源600。Please refer to FIG. 1 , which is a schematic diagram of a calibration system of a light emitting diode module according to an embodiment of the invention. The LED module calibration system includes a calibration unit 100, a LED module 200, an external monitoring unit 300, a memory comparison unit 400, a debug unit 500, and a power supply 600.

校正單元100電性連接發光二極體模組200、外部監測單元300、記憶比對單元400及偵錯單元500。The calibration unit 100 is electrically connected to the LED module 200, the external monitoring unit 300, the memory comparison unit 400, and the debug unit 500.

發光二極體模組200包含一發光二極體單元210、一控制單元220、一訊號轉換單元230及一內部監測單元240、一傳輸單元250及一驅動單元260。The LED module 200 includes a LED unit 210, a control unit 220, a signal conversion unit 230, an internal monitoring unit 240, a transmission unit 250, and a driving unit 260.

外部監測單元300電性連接發光二極體模組200及校正單元100，藉外部監測單元300可量測發光二極體單元 210之狀態。The external monitoring unit 300 is electrically connected to the LED module 200 and the calibration unit 100, and the external monitoring unit 300 can measure the LED unit. State of 210.

記憶比對單元400電性連接發光二極體模組200、外部監測單元300及內部監測單元240。The memory comparison unit 400 is electrically connected to the LED module 200, the external monitoring unit 300, and the internal monitoring unit 240.

偵錯單元500比對發光二極體模組200及校正單元100，用以確認發光二極體模組200是否正常工作。The debugging unit 500 compares the LED module 200 and the calibration unit 100 to confirm whether the LED module 200 is working normally.

電源600連接發光二極體模組200，供給其所需能源。The power source 600 is connected to the LED module 200 to supply the required energy.

請同時參照第2圖，其係繪示應用第1圖校正系統之校正方法流程圖。步驟710，使校正單元輸出一命令訊號至控制單元；步驟720，使控制單元輸出第一輸入訊號；步驟730，使訊號轉換單元轉換第一輸入訊號並輸出第二輸入訊號；步驟740，使內部監測單元輸出第一輸出狀態；步驟750，使外部監測單元輸出第二輸出狀態；步驟760，使記憶比對單元比對並記憶產生比對表。Please also refer to FIG. 2, which is a flow chart showing the calibration method of applying the correction system of FIG. 1. Step 710, the correction unit outputs a command signal to the control unit; step 720, the control unit outputs the first input signal; step 730, the signal conversion unit converts the first input signal and outputs the second input signal; step 740, internal The monitoring unit outputs a first output state; in step 750, the external monitoring unit outputs a second output state; in step 760, the memory comparison unit is aligned and the memory is compared to generate a comparison table.

使校正單元100發出一命令訊號CS藉由傳輸單元250輸出至發光二極體模組200後，控制單元220接收校正單元100之命令訊號CS後，根據命令訊號CS輸出一第一輸入訊號Vin1至訊號轉換單元230，而訊號轉換單元230轉換第一輸入訊號Vin1為一第二輸入訊號Vin2，本實施方式中第一輸入訊號Vin1為一脈衝寬度調變(Pulse Width Modulation,PWM)訊號，而第二輸入訊號Vin2為一線性訊號，且訊號轉換單元230輸出第二輸入訊號Vin2至驅動單元260後控制發光二極體單元210，發光二極體單元210接收第二輸入訊號Vin2後相對應發光，內部監測單元240偵測發光二極體單元210並輸出一第一輸出狀態Vout1，外部監測單元300同步監測發光二極體模組200並輸出一第 二輸出狀態Vout2。且記憶比對單元400比對並記憶產生一比對表CT，比對表CT儲存於記憶比對單元400中。After the calibration unit 100 sends a command signal CS to the LED module 200 through the transmission unit 250, the control unit 220 receives the command signal CS of the calibration unit 100, and outputs a first input signal Vin1 according to the command signal CS. The signal conversion unit 230 converts the first input signal Vin1 into a second input signal Vin2. In this embodiment, the first input signal Vin1 is a Pulse Width Modulation (PWM) signal, and the first The two input signals Vin2 are a linear signal, and the signal conversion unit 230 outputs the second input signal Vin2 to the driving unit 260 to control the LED unit 210. The LED unit 210 receives the second input signal Vin2 and emits light. The internal monitoring unit 240 detects the LED unit 210 and outputs a first output state Vout1, and the external monitoring unit 300 synchronously monitors the LED module 200 and outputs a first Two output states Vout2. And the memory comparison unit 400 compares and memorizes and generates a comparison table CT, and the comparison table CT is stored in the memory comparison unit 400.

上述比對表包含命令訊號CS、第二輸入訊號Vin2、第一輸出狀態Vout1及第二輸出狀態Vout2。而訊號CS、第二輸入訊號Vin2、第一輸出狀態Vout1及第二輸出狀態Vout2可為發光二極體單元210之實際驅動電流值、發光二極體單元210之工作週期值、發光二極體單元210之起始驅動電流值、發光二極體單元210之起始輸出亮度比值及發光二極體單元210之轉換輸出亮度比值。當校正單元100輸入相異之複數命令訊號CS，上述發光二極體單元210實際驅動電流值、工作週期值、起始驅動電流值、起始輸出亮度比值及轉換輸出亮度比值相對應產生複數個。更詳細地來說，第一輸出狀態Vout1及第二輸出狀態Vout2包含發光二極體單元210之開短路值、電壓、電流、色溫或亮度。The comparison table includes a command signal CS, a second input signal Vin2, a first output state Vout1, and a second output state Vout2. The signal CS, the second input signal Vin2, the first output state Vout1, and the second output state Vout2 may be an actual driving current value of the LED unit 210, a duty cycle value of the LED unit 210, and a light emitting diode. The initial driving current value of the unit 210, the initial output luminance ratio of the LED unit 210, and the converted output luminance ratio of the LED unit 210. When the correcting unit 100 inputs the different complex command signal CS, the actual driving current value, the working period value, the initial driving current value, the initial output luminance ratio, and the converted output luminance ratio of the LED unit 210 are corresponding to each other. . In more detail, the first output state Vout1 and the second output state Vout2 include an open-circuit value, a voltage, a current, a color temperature, or a brightness of the light-emitting diode unit 210.

本發明之發光二極體模組校正系統可實際應用於脈寬調光(PWM Dimming)及連續調光(Continuous Dimming)兩種亮度控制方式之發光二極體。請參照第3圖，其係繪示依照本發明一實施方式的一種發光二極體模組校正系統之應用步驟圖。在LED產品生產過程中，藉由上述第1圖校正系統之外部監測單元及內部監測單元量測LED狀態，並經由記憶比對單元建立兩個對應比對表a及比對表b，且將比對表a及比對表b存入於記憶比對單元中。應用步驟包含步驟810，將每個由控制單元送出的電流平均值與量 測到的LED工作週期之平均值相對應並建立比對表a。步驟820，以裝置有電流檢測電阻的測試板量測LED的實際驅動電流，並建立LED工作週期之平均值與實際驅動電流的比對表b。The illuminating diode module calibration system of the invention can be practically applied to two types of brightness control modes, namely, PWM Dimming and Continuous Dimming. Please refer to FIG. 3, which is a diagram showing application steps of a calibration module for a light-emitting diode module according to an embodiment of the invention. In the LED product production process, the external monitoring unit and the internal monitoring unit of the calibration system of FIG. 1 measure the LED state, and establish two corresponding comparison tables a and comparison table b via the memory comparison unit, and The comparison table a and the comparison table b are stored in the memory comparison unit. The application step includes step 810, the average value and amount of each current sent by the control unit The average of the measured LED duty cycles corresponds and a comparison table a is established. Step 820, measuring the actual driving current of the LED with a test board having a current detecting resistor, and establishing a comparison table b between the average value of the LED duty cycle and the actual driving current.

請參照第4A圖、第4B圖及第4C圖，其中第4A圖繪示上述校正系統應用於脈寬調光控制之發光二極體，第4B及第4C圖繪示上述校正系統應用於連續調光控制之發光二極體。本實施方式中，LED模組使用LM3414(National semiconductor)為驅動單元，但不限定使用LM3414，在此僅以此型號作為說明，LM3414為一款降壓定電流之LED驅動IC，其接點說明如下：VCC為LED內部穩壓輸出接點，PGND為功率接地接點，LADJ為LED平均輸出電流調節接點，GND為類比接地接點，FS為切換頻率接點，DIM為脈衝寬度調變調光控制接點，LX為連接電晶體Q2開關之接點，Vin為輸入電壓接點。另外上述之外部監測單元為一裝置有電流檢測電阻的測試板，校正單元為一外接之具有預設校正軟體之電腦，控制單元為一微控制器(Microcontroller Unit,MCU)，記憶比對單元即為微控制器中之記憶體，其預設有微控制器韌體(Firmware)，可於LED測試過程中加入上述建立比對表a及比對表b的程式。Please refer to FIG. 4A, FIG. 4B and FIG. 4C. FIG. 4A illustrates the above calibration system applied to the pulse width dimming control LED, and FIGS. 4B and 4C illustrate the calibration system applied to the continuous Light-emitting diode for dimming control. In this embodiment, the LED module uses the LM3414 (National semiconductor) as the driving unit, but the LM3414 is not limited. Here, only the model is used as the description. The LM3414 is a step-down constant current LED driver IC. As follows: VCC is the LED internal regulated output contact, PGND is the power ground contact, LADJ is the LED average output current adjustment contact, GND is the analog ground contact, FS is the switching frequency contact, DIM is the pulse width modulation dimming Control the contact, LX is the contact connecting the transistor Q2 switch, Vin is the input voltage contact. In addition, the external monitoring unit is a test board with a current detecting resistor, and the correcting unit is an external computer with a preset correcting software. The control unit is a Microcontroller Unit (MCU), and the memory comparison unit is For the memory in the microcontroller, the firmware is pre-configured with the firmware, and the above-mentioned program for establishing the comparison table a and the comparison table b can be added to the LED test process.

脈寬調光控制之LED訊號說明如下：當外接之具有預 設校正軟體之電腦之接點PWM Dimming和Enable輸出命令LED亮度之電流值的平均值後(即LED工作週期)，經由I_ADJ輸出外加電阻，藉此設定LED之最大電流值，而經由LM3414的接點LX輸出LED之工作週期，且OLPSCP為電壓電流保護電路，端點Current_Sense為外接之校正單元輸出的LED工作週期之平均值，其輸入微控制器。其中量測LED電流方法為跳線(Jumper)在測試時斷開，跳線兩端連接測試板的電流檢測電阻Rs，經由測得的實際驅動電流可建立比對表b，在測試完成時將跳線短路；另外量測LED電流與Current_Sense輸出具有相關性，所以也可直接量測端點Current_Sense之輸出，藉此取得微控制器輸出與監測對應之LED比對表。而比對表a及比對表b可輸出至電腦顯示，以供校準。The LED signal of the pulse width dimming control is as follows: when the external connection has a pre- Set the PWM of the calibration software to the PWM Dimming and Enable output to command the average value of the LED brightness (ie, LED duty cycle), and output the external resistor via I_ADJ to set the maximum current value of the LED, and connect it via the LM3414. The LX outputs the working period of the LED, and the OLPSP is the voltage and current protection circuit, and the endpoint Current_Sense is the average value of the LED duty cycle of the external correction unit output, which is input to the microcontroller. The method for measuring the LED current is that the jumper is disconnected during the test, and the current detecting resistor Rs of the test board is connected at both ends of the jumper, and the comparison table b can be established through the measured actual driving current, and the test will be completed when the test is completed. The jumper is short-circuited; in addition, the measured LED current is correlated with the Current_Sense output, so the output of the endpoint Current_Sense can also be directly measured, thereby obtaining the LED comparison table corresponding to the output and monitoring of the microcontroller. The comparison table a and the comparison table b can be output to a computer display for calibration.

連續調光控制之LED訊號說明如下：當外接之具有預設校正軟體之電腦之接點PWM_DIM輸出命令LED亮度之電流值的平均值後，經由微控制器輸出命令Enable啟動LED電流，而經由LM3414的接點LX輸出LED之工作週期，且OLPSCP為電壓電流保護電路，端點Current_Sense為外接之校正單元輸出的LED工作週期之平均值，其輸入微控制器。其中量測LED電流方法同上述脈寬調光控制之LED電流量測方法，跳線(Jumper)在測試時斷開，跳線兩端並連接測試板的電流檢測電阻 Rs，經由測得的實際驅動電流可建立比對表b，在測試完成時將跳線短路；另外量測LED電流與Current_Sense輸出有相關性，所以也可直接量測端點Current_Sense之輸出，藉此取得微控制器輸出與監測對應之LED比對表。而比對表a及比對表b可輸出至電腦顯示，以供校準。The LED signal of the continuous dimming control is as follows: when the external PWM_DIM of the computer with the preset correction software outputs the average value of the LED brightness of the command LED, the LED output current is enabled via the microcontroller to enable the LED current through the LM3414. The contact point LX outputs the working period of the LED, and the OLPSP is the voltage and current protection circuit, and the end point Current_Sense is the average value of the LED duty cycle of the external correction unit output, which is input to the microcontroller. The method for measuring the LED current is the same as the LED current measurement method for the pulse width dimming control described above, the jumper is disconnected during the test, and the current detecting resistor of the test board is connected at both ends of the jumper. Rs, through the measured actual drive current, the comparison table b can be established, and the jumper is short-circuited when the test is completed; in addition, the measured LED current is correlated with the Current_Sense output, so the output of the endpoint Current_Sense can also be directly measured. This takes the LED comparison table corresponding to the microcontroller output and monitoring. The comparison table a and the comparison table b can be output to a computer display for calibration.

請參照第5圖繪示之第4a圖及第4b圖的輸出訊號比較圖，其係顯示脈寬調光及連續調光控制之LED之輸出訊號比較圖。脈寬調光及連續調光均輸出0.5A的平均電流。脈寬調光改變LED之工作週期(LED之最大電流不變，其仍為1A)，藉此來改變LED之亮度；然而連續調光改變LED之最大電流(即改變平均電流，LED之工作週期不變)，藉此來改變LED之亮度。Please refer to the output signal comparison diagrams of FIG. 4a and FIG. 4b shown in FIG. 5 , which is a comparison diagram of output signals of LEDs showing pulse width dimming and continuous dimming control. Both pulse width dimming and continuous dimming output an average current of 0.5A. Pulse width dimming changes the duty cycle of the LED (the maximum current of the LED is unchanged, it is still 1A), thereby changing the brightness of the LED; however, continuous dimming changes the maximum current of the LED (ie, changing the average current, the duty cycle of the LED) Constant), thereby changing the brightness of the LED.

由上述本發明實施方式可知，應用本發明具有下列優點。It will be apparent from the above-described embodiments of the present invention that the application of the present invention has the following advantages.

1.本發明可以結合內置式電流檢測電阻的驅動IC以達到低成本且高可靠性的產品設計。1. The present invention can be combined with a built-in current sense resistor drive IC to achieve a low cost and high reliability product design.

2.本發明之校正單元可以修正LED亮度比值率與實際輸出值，輸出亮度與對應監測值，藉此可獲得更精確之LED狀態。2. The correction unit of the present invention can correct the LED luminance ratio ratio and the actual output value, and output luminance and corresponding monitoring values, thereby obtaining a more accurate LED state.

3.市面上推出的LED並無法取得其輸出狀態，搭配本發明可獲得其輸出狀態。3. The LEDs introduced on the market cannot obtain their output state, and the output state can be obtained by the present invention.

4.且每個LED內部電子零件的特性都不同，就算同一 型號之些微差異就可能導致應用系統誤判。本發明可協助使用者可以使用不同型號與不同批號的電子零件，而得到相同的輸出效果。藉此可增加電子零件的選擇，降低物料成本(Bill of material，BOM)成本。4. And the characteristics of the internal electronic components of each LED are different, even if the same Some slight differences in model numbers can lead to misjudgment of the application system. The invention can assist the user to use the electronic parts of different models and different batch numbers to obtain the same output effect. This can increase the choice of electronic parts and reduce the cost of bill of material (BOM).

5.於使用LED產品時，對照上述控制單元輸出與生產時LED取得之各狀態比對表可得知LED的狀況，藉此使用者可即時精準地校正LED。5. When using the LED product, the status of the LED can be known by comparing the status comparison table obtained by the above control unit output and the LED during production, so that the user can correct the LED accurately and instantly.

雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧校正單元100‧‧‧Correction unit

200‧‧‧發光二極體模組200‧‧‧Lighting diode module

210‧‧‧發光二極體單元210‧‧‧Lighting diode unit

220‧‧‧控制單元220‧‧‧Control unit

230‧‧‧訊號轉換單元230‧‧‧Signal Conversion Unit

240‧‧‧內部監測單元240‧‧‧Internal monitoring unit

250‧‧‧傳輸單元250‧‧‧Transportation unit

260‧‧‧驅動單元260‧‧‧ drive unit

300‧‧‧外部監測單元300‧‧‧External monitoring unit

400‧‧‧記憶比對單元400‧‧‧Memory comparison unit

500‧‧‧偵錯單元500‧‧‧Detection unit

600‧‧‧電源600‧‧‧Power supply

710‧‧‧步驟710‧‧ steps

720‧‧‧步驟720‧‧ steps

730‧‧‧步驟730‧‧‧Steps

740‧‧‧步驟740‧‧‧Steps

750‧‧‧步驟750‧‧ steps

760‧‧‧步驟760‧‧‧Steps

810‧‧‧步驟810‧‧‧Steps

820‧‧‧步驟820‧‧‧Steps

Vin1‧‧‧第一輸入訊號Vin1‧‧‧ first input signal

Vin2‧‧‧第二輸入訊號Vin2‧‧‧ second input signal

Vout1‧‧‧第一輸出狀態Vout1‧‧‧ first output status

Vout2‧‧‧第二輸出狀態Vout2‧‧‧second output status

CS‧‧‧命令訊號CS‧‧‧Command Signal

CT‧‧‧比對表CT‧‧‧ comparison table

為讓本發明之上述和其他目的、特徵、優點與實施例能更明顯易懂，所附圖式之說明如下：第1圖係繪示依照本發明一實施方式的一種發光二極體模組校正系統之方塊圖。The above and other objects, features, advantages and embodiments of the present invention will become more apparent and understood. The description of the drawings is as follows: FIG. 1 is a schematic diagram of a light emitting diode module according to an embodiment of the invention. Correct the block diagram of the system.

第2圖係繪示依照本發明另一實施方式的一種發光二極體模組校正方法之流程圖。2 is a flow chart showing a method for correcting a light-emitting diode module according to another embodiment of the present invention.

第3圖係繪示依照第1圖之應用步驟圖。Figure 3 is a diagram showing the application steps in accordance with Figure 1.

第4a圖係繪示依照本發明一實施方式的一種發光二極體模組校正系統應用於脈寬調光控制之發光二極體電路示意圖。FIG. 4a is a schematic diagram of a light-emitting diode circuit used for pulse width dimming control according to an embodiment of the invention.

第4b圖係繪示依照本發明一實施方式的一種發光二極體模組校正系統應用於連續調光控制之發光二極體電路示意圖。FIG. 4b is a schematic diagram of a light-emitting diode circuit applied to continuous dimming control according to an embodiment of the invention.

第4c圖係繪示第4b圖之另一發光二極體電路示意圖。Figure 4c is a schematic diagram showing another LED circuit of Figure 4b.

第5圖係繪示第4a圖及第4b圖之輸出訊號比較圖。Figure 5 is a comparison of the output signals of Figures 4a and 4b.

100‧‧‧校正單元100‧‧‧Correction unit

200‧‧‧發光二極體模組200‧‧‧Lighting diode module

210‧‧‧發光二極體單元210‧‧‧Lighting diode unit

220‧‧‧控制單元220‧‧‧Control unit

230‧‧‧訊號轉換單元230‧‧‧Signal Conversion Unit

240‧‧‧內部監測單元240‧‧‧Internal monitoring unit

250‧‧‧傳輸單元250‧‧‧Transportation unit

260‧‧‧驅動單元260‧‧‧ drive unit

300‧‧‧外部監測單元300‧‧‧External monitoring unit

400‧‧‧記憶比對單元400‧‧‧Memory comparison unit

500‧‧‧偵錯單元500‧‧‧Detection unit

600‧‧‧電源600‧‧‧Power supply

Vin1‧‧‧第一輸入訊號Vin1‧‧‧ first input signal

Vin2‧‧‧第二輸入訊號Vin2‧‧‧ second input signal

Vout1‧‧‧第一輸出狀態Vout1‧‧‧ first output status

Vout2‧‧‧第二輸出狀態Vout2‧‧‧second output status

CS‧‧‧命令訊號CS‧‧‧Command Signal

CT‧‧‧比對表CT‧‧‧ comparison table

Claims (11)

一種發光二極體模組校正系統，其包含：一發光二極體模組，其包含：一發光二極體單元；一控制單元，其輸出一第一輸入訊號；一訊號轉換單元，其轉換該第一輸入訊號為一第二輸入訊號，該訊號轉換單元輸出該第二輸入訊號控制該發光二極體單元；一驅動單元，其連接該訊號轉換單元，該驅動單元根據該第二輸入訊號驅動該發光二極體單元；一內部電流檢測電阻，其連接該發光二極體單元，該內部電流檢測電阻監測該發光二極體單元並輸出一電流平均值及一工作周期值；及一傳輸單元，用以接收一命令訊號以命令該控制單元；一外部電流檢測電阻，其位於一測試版上且可拆卸地電性連接該發光二極體模組，該外部電流檢測電阻以跳線方式監測該發光二極體模組並輸出一實際驅動電流值；一記憶比對單元，其電性連接該發光二極體模組、該外部電流檢測電阻及該內部電流檢測電阻，該記憶比對單元分別將該工作周期值比對該電流平均值及該實際驅動電流值並記憶產生二比對表以供往後校準，其中一該比對表為該電流平均值比對該工作周期值，另一該比對表為該實際驅動電流值比對該工作周期值；一校正單元，其電性連接該發光二極體模組之該傳輸 單元、該記憶比對單元及該外部電流檢測電阻，該校正單元輸出該命令訊號用以命令該發光二極體模組；以及一偵錯單元，其電性連接該校正單元及該發光二極體模組之該傳輸單元，該偵錯單元用以確認該發光二極體模組是否正常工作。 A light-emitting diode module calibration system includes: a light-emitting diode module comprising: a light-emitting diode unit; a control unit that outputs a first input signal; a signal conversion unit that converts The first input signal is a second input signal, the signal conversion unit outputs the second input signal to control the LED unit; a driving unit is connected to the signal conversion unit, and the driving unit is configured according to the second input signal Driving the light emitting diode unit; an internal current detecting resistor connected to the light emitting diode unit, the internal current detecting resistor monitoring the light emitting diode unit and outputting a current average value and a working period value; and transmitting a unit for receiving a command signal to command the control unit; an external current detecting resistor located on a test board and detachably electrically connected to the LED module, the external current detecting resistor being jumpered Monitoring the LED module and outputting an actual driving current value; a memory comparison unit electrically connecting the LED module to the external portion a current detecting resistor and the internal current detecting resistor, wherein the memory comparison unit respectively compares the duty cycle value to the current average value and the actual driving current value and memorizes to generate a two-alignment table for later calibration, wherein the ratio is The pair is the current average ratio to the duty cycle value, and the other comparison table is the actual drive current value ratio to the duty cycle value; a correction unit electrically connecting the light emitting diode module transmission a unit, the memory comparison unit and the external current detecting resistor, the correcting unit outputs the command signal for commanding the LED module, and a debugging unit electrically connected to the correcting unit and the LED The transmission unit of the body module is configured to confirm whether the LED module is working normally. 如請求項1之發光二極體模組校正系統，其中該實際驅動電流值及該工作週期值為複數個。 The illumination diode module calibration system of claim 1, wherein the actual drive current value and the duty cycle value are plural. 如請求項1之發光二極體模組校正系統，其中該命令訊號為該發光二極體單元之一起始輸出亮度比值，而該第二輸入訊號為該發光二極體單元之一轉換輸出亮度比值。 The illumination diode module calibration system of claim 1, wherein the command signal is an initial output luminance ratio of the LED unit, and the second input signal is a conversion output luminance of the LED unit. ratio. 如請求項1之發光二極體模組校正系統，其中該起始輸出亮度比值及該轉換輸出亮度比值為複數個。 The illumination diode module calibration system of claim 1, wherein the ratio of the initial output luminance ratio and the luminance of the conversion output is plural. 如請求項1之發光二極體模組校正系統，其中該第一輸出狀態係該發光二極體單元之開短路值、電壓、電流、色溫或亮度。 The illumination diode module calibration system of claim 1, wherein the first output state is an open short circuit value, a voltage, a current, a color temperature or a brightness of the light emitting diode unit. 如請求項1之發光二極體模組校正系統，其中該第二輸出狀態係該發光二極體單元之開短路值、電壓、電流、色溫或亮度。 The illuminating diode module calibration system of claim 1, wherein the second output state is an open short circuit value, a voltage, a current, a color temperature or a brightness of the illuminating diode unit. 如請求項1之發光二極體模組校正系統，其中該二比對表輸出至一外接顯示裝置。 The illumination diode module calibration system of claim 1, wherein the two alignment table outputs to an external display device. 一種校正方法，應用於請求項1之發光二極體模組校正系統，該校正方法包含：使該校正單元輸出該命令訊號至該控制單元；使該控制單元輸出該第一輸入訊號；該訊號轉換單元轉換該第一輸入訊號並輸出該第二輸入訊號；使該內部電流檢測電阻輸出該電流平均值及該工作周期值；使該外部電流檢測電阻輸出該實際驅動電流值；以及使該記憶比對單元分別將該工作周期值比對該電流平均值及該實際驅動電流值並記憶產生該二比對表。 A calibration method is applied to the illumination diode module calibration system of claim 1, the correction method comprising: causing the correction unit to output the command signal to the control unit; and causing the control unit to output the first input signal; the signal Converting the first input signal and outputting the second input signal; causing the internal current detecting resistor to output the current average value and the working period value; causing the external current detecting resistor to output the actual driving current value; and making the memory The comparison unit respectively compares the duty cycle value to the current average value and the actual drive current value and memorizes the two comparison table. 如請求項8之校正方法，其中該命令訊號為該發光二極體單元之一起始輸出亮度比值，而該第二輸入訊號為該發光二極體單元之一轉換輸出亮度比值。 The method of claim 8, wherein the command signal is an initial output brightness ratio of the one of the light emitting diode units, and the second input signal is a converted output brightness ratio of the one of the light emitting diode units. 如請求項8之校正方法，其中該第二輸出狀態包含該發光二極體單元之開短路值、電壓、電流、色溫或亮度。 The method of claim 8, wherein the second output state comprises an open short circuit value, a voltage, a current, a color temperature or a brightness of the light emitting diode unit. 如請求項8之校正方法，其中該第一輸出狀態包含該發光二極體單元之開短路值、電壓、電流、工作週期、色溫或亮度。The method of claim 8, wherein the first output state comprises an open short circuit value, a voltage, a current, a duty cycle, a color temperature, or a brightness of the light emitting diode unit.
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