TW201824953A - Light emission control circuit and mother board having the same - Google Patents
Light emission control circuit and mother board having the same Download PDFInfo
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- 238000005286 illumination Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 4
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- 241000282414 Homo sapiens Species 0.000 description 2
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- 210000004508 polar body Anatomy 0.000 description 2
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- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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Abstract
Description
本發明係關於一種發光控制電路，特別是一種用以控制多顆發光二極體模組發光之控制電路。The invention relates to an illumination control circuit, in particular to a control circuit for controlling illumination of a plurality of LED modules.
由於發光二極體具有體積小、省電、壽命長等優點，在許多領域中已逐漸取代傳統鎢絲燈泡的使用。又目前控制發光二極體發光之方式有很多種，其中藉由脈衝寬度調變(Pulse Width Modulation, PWM)技術對發光二極體進行發光控制即是常見的方式之一。然而，現有技術中，如欲以脈波訊號同步控制多顆發光二極體發光時，需要每顆發光二極體模組搭配一脈波寬調變模組，換言之，在需要使大量發光二極體同時發光時，控制電路中須相應設置多個脈波寬調變模組，導致控制電路製作成本昂貴。Due to the advantages of small size, power saving, long life and the like, the LED has gradually replaced the use of the conventional tungsten filament bulb in many fields. At present, there are many ways to control the illumination of the LED, and it is one of the common ways to control the illumination of the LED by Pulse Width Modulation (PWM) technology. However, in the prior art, if the plurality of light-emitting diodes are to be controlled by the pulse wave signal synchronously, each of the light-emitting diode modules needs to be matched with a pulse width modulation module, in other words, in order to make a large number of light-emitting diodes When the polar body emits light at the same time, a plurality of pulse width modulation modules must be correspondingly arranged in the control circuit, which results in the control circuit being expensive to manufacture.
因此，實有必要思考一種新的發光控制電路及具有該發光控制電路之主機板，以改善先前技術遭遇之問題。Therefore, it is necessary to consider a new illumination control circuit and a motherboard having the illumination control circuit to improve the problems encountered in the prior art.
本發明之主要目的係在提供一種可僅以單一脈波寬調變模組控制複數發光模組之發光控制電路及具有該發光控制電路之主機板。The main object of the present invention is to provide an illumination control circuit capable of controlling a plurality of illumination modules with only a single pulse width modulation module and a motherboard having the illumination control circuit.
為達成上述之目的，本發明之發光控制電路用以控制複數發光模組發光，其中各發光模組電性連接一電源。發光控制包括有複數開關組、一脈波寬調變模組及一選擇控制模組。複數開關組分別串聯各發光模組，並且接地，其中各開關組包括至少一第一開關及一第二開關，該至少一第一開關串聯該第二開關。脈波寬調變模組係與各開關組之第一開關電性連接，脈波寬調變模組用以產生一脈波訊號，以藉由該脈波訊號之傳遞控制各開關組之第一開關導通。選擇控制模組係與各開關組之第二開關電性連接，選擇控制模組用以在複數開關組之其中一開關組之第一開關被導通時，同時控制同一開關組之第二開關導通，以使串聯該開關組之發光模組藉由該電源接地時產生之一順向偏壓而導通發光。In order to achieve the above object, the illumination control circuit of the present invention is configured to control the illumination of the plurality of illumination modules, wherein each of the illumination modules is electrically connected to a power source. The illumination control includes a plurality of switch groups, a pulse width modulation module and a selection control module. Each of the plurality of switch groups is connected in series with each of the light-emitting modules, and is grounded, wherein each switch group includes at least one first switch and a second switch, and the at least one first switch is connected in series with the second switch. The pulse width modulation module is electrically connected to the first switch of each switch group, and the pulse width modulation module is configured to generate a pulse signal to control the switch group by the transmission of the pulse signal A switch is turned on. The selection control module is electrically connected to the second switch of each switch group, and the control module is configured to simultaneously control the second switch of the same switch group to be turned on when the first switch of one of the plurality of switch groups is turned on. The light-emitting module connected in series with the switch group is turned on by one of the forward biases when the power source is grounded.
本發明之主機板包括有複數發光模組及控制電路，其中各發光模組電性連接一電源，而控制電路包括有複數開關組、脈波寬調變模組及選擇控制模組。複數開關組分別串聯各發光模組，各開關組並且接地，其中各開關組包括至少一第一開關及一第二開關，第一開關串聯第二開關。脈波寬調變模組係與各開關組之第一開關電性連接，脈波寬調變模組用以產生一脈波訊號，以藉由該脈波訊號之傳遞控制各開關組之第一開關導通或不導通。選擇控制模組係與各開關組之第二開關電性連接，選擇控制模組用以在複數開關組之其中一開關組之第一開關被導通時，同時控制該開關組之第二開關導通，以使串聯該開關組之發光模組藉由該電源接地時產生之一順向偏壓而導通發光。The motherboard of the present invention comprises a plurality of light-emitting modules and a control circuit, wherein each of the light-emitting modules is electrically connected to a power source, and the control circuit comprises a plurality of switch groups, a pulse width modulation module and a selection control module. Each of the plurality of switch groups is connected in series with each of the light-emitting modules, and each of the switch groups is grounded. Each of the switch groups includes at least one first switch and a second switch, and the first switch is connected in series with the second switch. The pulse width modulation module is electrically connected to the first switch of each switch group, and the pulse width modulation module is configured to generate a pulse signal to control the switch group by the transmission of the pulse signal A switch is turned on or off. The control module is electrically connected to the second switch of each switch group, and the control module is configured to simultaneously control the second switch of the switch group when the first switch of one of the plurality of switch groups is turned on. The light-emitting module connected in series with the switch group is turned on by one of the forward biases when the power source is grounded.
為能讓 貴審查委員能更瞭解本發明之技術內容，特舉較佳具體實施例說明如下。In order to enable the reviewing committee to better understand the technical contents of the present invention, the preferred embodiments are described below.
請參考圖1關於本發明之發光控制電路之電路架構圖。Please refer to FIG. 1 for a circuit architecture diagram of the illumination control circuit of the present invention.
如圖1所示，在本發明之一實施例中，本發明之主機板2包括有複數發光模組90A、90B、90C以及本發明揭示之發光控制電路1，其中發光控制電路1可用以控制複數發光模組90A、90B、90C發光，各發光模組90A、90B、90C包括有三顆電性連接一直流電源91之發光二極體R、B、G，發光二極體R、B、G可分別用以發出紅光、藍光及綠光，亦即複數發光二極體R、B、G之發光顏色各不相同。在本發明之一實施例中，本發明之發光控制電路1包括複數開關組10A、10B、10C、脈波寬調變模組20及選擇控制模組30，其中開關組10A、10B、10C與發光模組90A、90B、90C對應配置相同數量，且脈波寬調變模組20與選擇控制模組30整合在同一微控制器M(例如：8051單晶片)當中。As shown in FIG. 1, in an embodiment of the present invention, the motherboard 2 of the present invention includes a plurality of light-emitting modules 90A, 90B, 90C and an illumination control circuit 1 disclosed in the present invention, wherein the illumination control circuit 1 can be used to control The plurality of light-emitting modules 90A, 90B, and 90C emit light, and each of the light-emitting modules 90A, 90B, and 90C includes three light-emitting diodes R, B, and G electrically connected to the power source 91, and the light-emitting diodes R, B, and G. It can be used to emit red, blue and green light respectively, that is, the luminous colors of the plurality of light-emitting diodes R, B, and G are different. In an embodiment of the invention, the illumination control circuit 1 of the present invention comprises a plurality of switch groups 10A, 10B, 10C, a pulse width modulation module 20 and a selection control module 30, wherein the switch groups 10A, 10B, 10C and The illumination modules 90A, 90B, and 90C are disposed in the same number, and the pulse width modulation module 20 and the selection control module 30 are integrated in the same microcontroller M (for example, an 8051 single chip).
如圖1所示，在本發明之一實施例中，複數開關組10A、10B、10C各包含三個第一開關11、12、13及第二開關14。各開關組10A、10B、10C中之第一開關11、12、13分別串聯各發光模組90中之發光二極體R、B、G。各開關組10A、10B、10C中的第二開關14串聯各自開關組10A、10B、10C中的第一開關11、12、13，第二開關14並且接地。在本發明之具體實施例中，第一開關11、12、13與第二開關14皆為P型金屬氧化物半導體場效電晶體(PMOS)，但本發明不以此為限。As shown in FIG. 1, in one embodiment of the present invention, the plurality of switch groups 10A, 10B, 10C each include three first switches 11, 12, 13 and a second switch 14. The first switches 11, 12, and 13 of the switch groups 10A, 10B, and 10C are respectively connected to the light-emitting diodes R, B, and G in the light-emitting modules 90. The second switch 14 of each of the switch groups 10A, 10B, 10C is connected in series with the first switches 11, 12, 13 of the respective switch groups 10A, 10B, 10C, and the second switch 14 is grounded. In the specific embodiment of the present invention, the first switches 11, 12, 13 and the second switch 14 are all P-type metal oxide semiconductor field effect transistors (PMOS), but the invention is not limited thereto.
在本發明之一實施例中，脈波寬調變模組20係與各開關組10A、10B、10C之第一開關11、12、13電性連接。脈波寬調變模組20用以產生脈波訊號，產生之脈波訊號並可透過微控制器M上的通用輸出接腳PWM_R、PWM_B或PWM_G依序傳遞到各開關組10A、10B、10C之第一開關11、12、13，藉以依序控制各第一開關11、12、13導通。在本發明之實施例中，當有高電位之脈波訊號傳遞到第一開關11、12、13時，第一開關11、12、13被導通；反之，第一開關11、12、13則不導通。並且，使用者可經由輸入控制訊號調整脈波訊號之工作週期，以調整各發光二極體R、B、G發光之亮度，進而使得各發光模組90A、90B、90C可藉由各發光二極體R、B、G發光亮度之調變而產生多種顏色的光；控制訊號輸入之具體實施方式，係可透過一顯示器顯示操作介面，並於操作介面上顯示多種顏色選項，使用者點選特定顏色後，即可輸入特定控制訊號，以控制各發光模組90A、90B、90C產生特定顏色的光，惟所述控制訊號輸入之方式並不以此為限。由於藉由調整脈波訊號之工作週期以調控發光二極體發光之亮度為習用技術，其具體原理已散見在許多專利或技術文獻當中，乃為所屬領域具有通常知識者所熟悉，故在此即不再多做贅述。In one embodiment of the present invention, the pulse width modulation module 20 is electrically connected to the first switches 11, 12, and 13 of each of the switch groups 10A, 10B, and 10C. The pulse width modulation module 20 is configured to generate a pulse wave signal, and the generated pulse wave signal can be sequentially transmitted to each switch group 10A, 10B, 10C through the universal output pin PWM_R, PWM_B or PWM_G on the microcontroller M. The first switches 11, 12, 13 are used to sequentially control the respective first switches 11, 12, 13 to be turned on. In the embodiment of the present invention, when a pulse signal having a high potential is transmitted to the first switches 11, 12, 13, the first switches 11, 12, 13 are turned on; otherwise, the first switches 11, 12, 13 are Not conductive. Moreover, the user can adjust the working period of the pulse signal by inputting the control signal to adjust the brightness of each of the LEDs R, B, and G, so that each of the light-emitting modules 90A, 90B, and 90C can be illuminated by each of the two light-emitting diodes 90A, 90B, and 90C. The brightness of the polar body R, B, G is modulated to produce a plurality of colors of light; the specific implementation of the control signal input can display the operation interface through a display, and display multiple color options on the operation interface, the user clicks After a specific color, a specific control signal can be input to control each of the light-emitting modules 90A, 90B, and 90C to generate light of a specific color, but the manner of controlling the signal input is not limited thereto. Since the brightness of the light-emitting diode is adjusted by adjusting the duty cycle of the pulse signal as a conventional technique, the specific principle has been scattered in many patents or technical documents, and is familiar to those skilled in the art. That is, no more details will be made.
在本發明之一實施例中，選擇控制模組30係與各開關組10A、10B、10C中之第二開關14以及脈波寬調變模組20電性連接。選擇控制模組30用以在複數開關組10A、10B、10C之其中一開關組10A、10B或10C之第一開關11、12、13被導通時，同時控制同一開關組10A、10B或10C中的第二開關14導通，以使串聯該開關組10A、10B或10C之發光模組90A、90B或90C之發光二極體R、B或G發光。舉例而言，如圖1所示，當脈波寬調變模組20產生輸出高電位之脈波訊號時，微控制器M之計時模組(圖未示)便會開始計時脈波訊號輸出到達各開關組10A的預定時間。因此，當產生的高電位之脈波訊號分別經由通用輸出接腳PWM_R、PWM_B及PWM_G輸出到達開關組10A之第一開關11、12及13時，同一時間，選擇控制模組30在計時模組通知下而透過微控制器M上之另一通用輸出接腳LED_CH1所發出的控制訊號也會同時到達同一開關組10A之第二開關14，以使該第二開關14也被導通；此時開關組10A中的第一開關11、12、13與第二開關14在同時被導通後，由於連接發光二極體R、B、G之直流電源91會因為接地而在各發光二極體R、B、G兩端產生壓降，因而使得發光二極體R、B、G可在順向偏壓之產生下而被導通發光。由於脈波訊號輸出到達各發光模組90A、90B或90C的時間會有所落差，因此，當上述相同的高電位之脈波訊號傳遞至開關組10B之第一開關11、12、13時，選擇控制模組30會再次在計時模組的通知下，透由通用輸出接腳LED_CH2輸出控制訊號至開關組10B之第二開關14，以使該開關組10B中之第一開關11、12、13及第二開關14同步導通，使得串聯該開關組10B之發光模組90B的發光二極體R、B、G藉由直流電源91接地時產生的順向偏壓而導通發光。In one embodiment of the present invention, the selection control module 30 is electrically connected to the second switch 14 and the pulse width modulation module 20 of each of the switch groups 10A, 10B, and 10C. The selection control module 30 is configured to simultaneously control the same switch group 10A, 10B or 10C when the first switches 11, 12, 13 of one of the switch groups 10A, 10B, 10C of the plurality of switch groups 10A, 10B, 10C are turned on. The second switch 14 is turned on to illuminate the light-emitting diodes R, B or G of the light-emitting modules 90A, 90B or 90C connected in series with the switch group 10A, 10B or 10C. For example, as shown in FIG. 1 , when the pulse width modulation module 20 generates a pulse signal that outputs a high potential, the timing module of the microcontroller M (not shown) starts to output the pulse signal output. The predetermined time to reach each switch group 10A. Therefore, when the generated high-potential pulse signals are respectively output to the first switches 11, 12, and 13 of the switch group 10A via the general-purpose output pins PWM_R, PWM_B, and PWM_G, the control module 30 is selected in the timing module at the same time. The control signal sent by the other general-purpose output pin LED_CH1 on the microcontroller M also reaches the second switch 14 of the same switch group 10A at the same time, so that the second switch 14 is also turned on; After the first switches 11, 12, 13 and the second switch 14 in the group 10A are simultaneously turned on, since the DC power source 91 connecting the light-emitting diodes R, B, and G is grounded, each of the light-emitting diodes R, A voltage drop occurs across the B and G, so that the light-emitting diodes R, B, and G can be turned on by the forward bias. Since the time when the pulse signal output reaches the respective light emitting modules 90A, 90B or 90C is different, when the same high potential pulse wave signal is transmitted to the first switches 11, 12, 13 of the switch group 10B, The selection control module 30 will again output the control signal to the second switch 14 of the switch group 10B through the general output pin LED_CH2 under the notification of the timing module, so that the first switch 11, 12 in the switch group 10B, 13 and the second switch 14 are synchronously turned on, so that the light-emitting diodes R, B, and G of the light-emitting module 90B connected in series with the switch group 10B are turned on by the forward bias generated when the DC power source 91 is grounded.
誠如上述，由於脈波訊號傳遞至各開關組10A、10B、10C會有時間上的落差，因此，複數開關組10A、10B、10C同一時點只會有其中一開關組10A、10B或10C的第一開關11、12或13及第二開關14被同時導通，換言之，同一時點實際上只會有一發光模組90A、90B或90C被導通而發光。為了在視覺上給予使用者有複數發光模組90A、90B或90C同時在發光之感受，在本發明之實施例中，各開關組10A、10B、10C之第一開關11、12或13及第二開關14每隔T秒會被同步導通一次，其中T大於0，並小於或等於0.625，T秒大約為人類視覺殘留之時間。如此一來，即使實際上一次僅有單一發光模組90A、90B或90C被導通而發光，但在視覺感受上，使用者仍會看到全部或部分的發光模組90A、90B或90C是持續在發光。As described above, since the pulse signal is transmitted to each of the switch groups 10A, 10B, and 10C, there is a time difference. Therefore, the plurality of switch groups 10A, 10B, and 10C have only one of the switch groups 10A, 10B, or 10C at the same time. The first switch 11, 12 or 13 and the second switch 14 are simultaneously turned on, in other words, at the same time, only one of the light-emitting modules 90A, 90B or 90C is turned on to emit light. In order to visually give the user a feeling that the plurality of light-emitting modules 90A, 90B or 90C are simultaneously emitting light, in the embodiment of the present invention, the first switches 11, 12 or 13 and the first switches of the respective switch groups 10A, 10B, 10C The two switches 14 are simultaneously turned on once every T seconds, where T is greater than 0 and less than or equal to 0.625, and T seconds is approximately the time remaining for human vision. In this way, even if only a single illumination module 90A, 90B or 90C is actually turned on and emits light at a time, the user still sees that all or part of the illumination module 90A, 90B or 90C is continuous. In the glow.
經由上述說明可知，本發明揭露之發光控制電路1可藉由分時控制相串聯的第一開關11、12或13與第二開關14同步導通，以依序控制各發光模組90A、90B、90C發光，並利用人類有的視覺殘留現象，達到僅以單一脈波寬調變模組控制複數發光二極體持續發光之效果。It can be seen from the above description that the illumination control circuit 1 disclosed in the present invention can be synchronously turned on by the first switch 11, 12 or 13 connected in series by time-sharing control to sequentially control the illumination modules 90A, 90B, The 90C emits light and utilizes the visual residual phenomenon of human beings to achieve the effect of controlling the continuous illumination of the complex light-emitting diodes with only a single pulse width modulation module.
綜上所陳，本發明無論就目的、手段及功效，在在均顯示其迥異於習知技術之特徵，懇請 貴審查委員明察，早日賜准專利，俾嘉惠社會，實感德便。惟應注意的是，上述諸多實施例僅係為了便於說明而舉例而已，本發明所主張之權利範圍自應以申請專利範圍所述為準，而非僅限於上述實施例。To sum up, the present invention, regardless of its purpose, means and efficacy, shows its distinctive features of the prior art. You are requested to review the examination and express the patent as soon as possible. It should be noted that the various embodiments described above are merely illustrative for ease of explanation, and the scope of the invention is intended to be limited by the scope of the claims.
1‧‧‧發光控制電路
21‧‧‧主機板
10A、10B、10C1‧‧‧開關組
11、12、131‧‧‧第一開關
141‧‧‧第二開關
201‧‧‧脈波寬調變模組
301‧‧‧選擇控制模組
90A、90B、90C1‧‧‧發光模組
R、B、G1‧‧‧發光二極體
M1‧‧‧微控制器
PWM_R、PWM_B、PWM_G、LED_CH1、LED_CH2、LED_CH31‧‧‧通用輸出接腳
1‧‧‧Lighting control circuit
21‧‧‧ motherboard
10A, 10B, 10C1‧‧‧ switch group
11, 12, 131‧‧‧ first switch
141‧‧‧second switch
201‧‧‧ Pulse width modulation module
301‧‧‧Selection control module
90A, 90B, 90C1‧‧‧Light Module
R, B, G1‧‧‧ Light Emitting Diodes
M1‧‧‧Microcontroller
PWM_R, PWM_B, PWM_G, LED_CH1, LED_CH2, LED_CH31‧‧‧ General Purpose Output Pins
圖1係本發明之發光控制電路之電路架構圖。1 is a circuit diagram of a lighting control circuit of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105142625A TWI606749B (en) | 2016-12-22 | 2016-12-22 | Light emission control circuit and mother board having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105142625A TWI606749B (en) | 2016-12-22 | 2016-12-22 | Light emission control circuit and mother board having the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI606749B TWI606749B (en) | 2017-11-21 |
| TW201824953A true TW201824953A (en) | 2018-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW105142625A TWI606749B (en) | 2016-12-22 | 2016-12-22 | Light emission control circuit and mother board having the same |
Country Status (1)
| Country | Link |
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| TW (1) | TWI606749B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI772069B (en) * | 2021-06-18 | 2022-07-21 | 微星科技股份有限公司 | Illumination control system and method of gaming peripherals |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI355864B (en) * | 2006-09-13 | 2012-01-01 | Gigno Technology Co Ltd | Light emitting device and driving method thereof |
| KR100862507B1 (en) * | 2007-06-20 | 2008-10-08 | 삼성전기주식회사 | Device for driving led |
| KR101614304B1 (en) * | 2007-11-16 | 2016-04-21 | 알레그로 마이크로시스템스, 엘엘씨 | Electronic circuits for driving series connected light emitting diode strings |
| CN101521974B (en) * | 2009-04-07 | 2012-09-05 | 福州华映视讯有限公司 | Light source for developing color by color sequential method |
| US8610368B2 (en) * | 2009-12-21 | 2013-12-17 | Top Victory Investments Ltd. | Serial-type light-emitting diode (LED) device |
| TWI465152B (en) * | 2010-06-28 | 2014-12-11 | Hon Hai Prec Ind Co Ltd | Led display device capable of balancing its current and method thereof |
| TWI433600B (en) * | 2010-11-02 | 2014-04-01 | Chunghwa Picture Tubes Ltd | Backlight module and driving citcuit |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI772069B (en) * | 2021-06-18 | 2022-07-21 | 微星科技股份有限公司 | Illumination control system and method of gaming peripherals |
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| Publication number | Publication date |
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| TWI606749B (en) | 2017-11-21 |
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