TW201026151A - Electronic ballast with linear light adjusting structure and controlling method thereof - Google Patents

Abstract

The invention provides an electronic ballast with a linear light adjusting structure and a controlling method thereof. The electronic ballast of the invention includes a processing module, an adjusting module, a quasi-linear compensation module and a driving module. The processing module is used for generating a direct signal according to a first alternating signal. The adjusting module is used for generating an adjustable variation quantity for according to the adjustable variation quantity generating correspondingly an adjusting signal. The quasi-linear compensation module is connected to the adjusting module for adjusting a compensation circuit according to the adjusting signal. The compensation circuit generates a quasi-linear compensation signal by an equally resister value is quasi-linear changed. The driving module is connected to the processing module, the quasi-linear compensation module and a lamp for driving the lamp generates correspondingly a brightness variation according to the direct signal and the quasi-linear compensation module generated a driving signal.

Description

201026151 VI. Description of the Invention: [Technical Field] The present invention relates to an electronic ballast, and in particular, to an electronic ballast capable of providing linear control and dimming and a method of operating the same. [Previous Skills] Since Edison invented the use of electroluminescent incandescent lamps, it has created a life style for human beings and changed the life style that has been created and degraded in the past, while at the same time ignoring human night life. Subsequently, the world invested a lot of resources to develop various light sources. There are many types of light sources on the market today. For example, the types of illumination sources are as small as semiconductor light-emitting diodes and as large as various outdoor searchlights. However, among various light source systems, fluorescent lamps are still one of the most widely used light sources, and the arrangement of fluorescent lamps can be found in general homes, government offices or offices. However, based on the high awareness of energy conservation, electronic stabilizers can be used to replace traditional electromagnetic ballasts with more energy-saving and higher luminous efficiency than conventional electromagnetic ballasts. But people in related fields are looking for more economical electronic ballasts. Therefore, a dimmable electronic ballast has been developed. The dimmable ballast provides the user with the ability to determine the output of the auxiliary light source depending on the brightness of the space environment. Referring to FIG. 1, FIG. 1 is a functional block diagram of a conventional electronic ballast 2. As shown in FIG. 1, the conventional electronic ballast 2 includes an electromagnetic interference (EMI) filter 20, a rectifier module 22, a power factor correction module 24, and a drive module 26. 4 201026151 The electromagnetic interference filter 20 is connected to the power supply l, and the electromagnetic interference filter 20 receives the alternating current signal and filters out or isolates the noise accompanying the alternating current signal into the electronic ballast 2. The filtered AC signal is converted by the rectifier module 22 into an AC signal. In fact, since the rectified DC signal is not a smooth DC signal, it is a current having a ripple component. The chopping component affects the quality of the output DC signal. In other words, the larger the chopping, the better the quality of the DC signal. Conversely, the chopper is small to provide a stable DC signal.

It is further explained that the DC signal with the chopping component also affects the power factor of the electronic stabilizer. Therefore, the power factor correction module 24 is required to correct the power factor ' to provide a stable and high power factor DC signal of the next stage. The receiver's DC signal is converted into a high-frequency AC signal by the DC-to-AC converter of the drive module 26, and the high-frequency AC signal and the oscillation circuit generate a high frequency gain to push and illuminate the lamp. Tube 3〇. The conventional dimmable electronic ballast uses the adjustment of the oscillation frequency to achieve the purpose of dimming. However, this dimming method is not easy to control and does not provide the function of linear dimming, so that the required brightness cannot be adjusted in time to achieve energy saving. SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an electronic ballast that utilizes a linear conversion signal to control lamp current, thereby achieving an effect of controlling lamp output ratio and energy saving. Generate a DC signal. The adjustment module is used to generate an adjustment ί: ! size to generate a corresponding adjustment signal.拟 ί ί 补 补 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到 到Module. The processing module uses the electric power of 201026151 to convert the equivalent resistance value of the compensation circuit to the linearity compensation signal. In addition, the driving module is coupled to the imaginary housing line. Another exemplary arm of the present invention provides a linear conversion signal for operating the electronic control of the tube current, and thus the ratio of the light output and the energy saving. According to a specific embodiment, firstly, the method performs step (8) according to the ίίϊίίί direct signal. Then, the method performs the step _ raw adjustment ϊϋ ίί?: the magnitude of the change produces a corresponding adjustment signal. With the method execution step (C), adjust the electronic ballast according to the adjustment signal. 1 When the equivalent resistance value of the compensation is linearly changed to generate the quasi-linear compensation 2, the method performs the step (d) according to the DC signal and The line, the 仏 生 生 生 鹤 以 以 以 以 以 以 以 生 生 生 生 生 生 生 生 生 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 透过 41 41 41 41 41 41 41 41 41 41 41 41 The effect of the 'electronic ballast can provide more elastic Ϊΐ Ϊΐ 系 ' and expand the range of dimming 'to make the dimming control more operational in order to meet the actual needs of users. The advantages and spirit of the invention can The invention will be further understood by the detailed description of the invention and the drawings. [Embodiment] Referring to FIG. 2A and FIG. 2B together, FIG. 2A shows an electronic ballast according to an embodiment of the present invention. 4 is a circuit diagram of the compensation circuit 440 of FIG. 2A. As shown, the electronic ballast 4 includes a processing module 40, an adjustment module 42, and a quasi-linear compensation (quasi- Linear compensation) module 44 and the driving module 46 〇 processing module 40 is coupled to the power supply 1 〇 and receives the first alternating current signal from the power supply 1 ,, the processing module 40 generates a direct current signal according to the first alternating current signal, the first alternating current signal refers to the general The AC signal is used to provide the basic power required by the electronic ballast 4. The adjustment module 42 is configured to generate an adjustment change amount, and the adjustment module 42 generates a corresponding adjustment signal according to the magnitude of the adjustment change amount. In an example, the adjustment module may include a variable resistor (variableresist〇r) 42〇, and the resistance value of the variable resistor 420 may be arbitrarily changed within a rated range, but the resistance value

Limit 0

The variable resistor 42 in the group 42 is pressed by

201026151 =, special! Quasi-linear compensation (quasi_linear c〇mpensati〇n) module 44, the coupling module 42' is used to adjust the compensation circuit 440 according to the adjustment signal, so that the equivalent resistance value of the 2 J way 440 ~ change A quasi-linear (qUasi-linear) is presented to generate a quasi-linear compensation signal.

The compensation circuit 440 can include an input terminal 4400, an output terminal __, and a second resistance element R3. The input terminal is coupled to the first resistive element R1 of the variable resistor 420. The output terminal is coupled to the second resistor element R2 of the variable resistor 420. The third resistive element Rs is coupled to the input terminal 44 (8) and the contact %, and the contact is between the first resistive element 艮 and the second resistive element 仏. When the adjustment module 42 generates the adjustment change amount, the first resistance value 盥 also changes with the first resistance value, so that the tearing end 4 and the input 电阻 resistance value Rth exhibit a quasi-linear change. In fact, the structure of the compensation circuit 44 can be other variations as long as the variation of the equivalent resistance value can be rendered quasi-linear 'not limited to the above architecture. The driving module 46 is coupled to the processing module 40, the quasi-linear compensating module 44, and the lamp manual 'compensation module 4_6 according to the DC signal and the quasi-linear compensation signal to generate a driving nickname to the lamp 5 〇 to drive the lamp The tube 5 turns and causes the corresponding change in brightness of the tube 5〇. The +, drive_group 46 first converts the DC signal to the second AC signal by DC conversion, C_AC^coffee, and the first communication signal is the high lying ship number. Next, the drive group 46 adjusts the frequency of the second AC signal according to the frequency of the quasi-linear compensation signal to generate a drive signal having an appropriate frequency gain. In the present embodiment, the driving frequency is adjusted by the quasi-linear compensation module 44, and the current output to the lamp 5〇 is further adjusted by the = dynamic mode and the group 46, so that the lamp current and the light output ratio are linearly changed ( The lamp has a rated illuminance of 10 to 100 ° / 〇). In fact, the number of lamps 5〇 can be the structure of a single lamp or a plurality of lamps. 8 201026151 In the present embodiment, the electronic ballast 4 can be advanced 48. When the protection module 48 is lightly connected to the driving module 46 and the lamp tube $ and 4 == the abnormal state of the lamp 5G, the protection module 48 stops the driving signal to the lamp 5 轮. Actual, ,,,

Tube aging, rupture, filament _ or: road i connected; 忿 = energy U can provide a kind of safety protection to prevent people from turning the line. Slave is smashed or smashed. If the electronic ballast 4 is activated, the instant protection group 48 ❹ 46 J 46 ^ 巧灯 g 5. . The slave electronic ballast 4 has been activated and the % of the abnormal state has occurred in the case of % 2, then the protection module 4 stops the transmission of 5 〇, 'detailed f ί = 2 ' Figure 2 C is shown in Figure 2A Processing module 40 Tian Gong 妃 block diagram. As shown in FIG. 2C, the processing module 4 can include the U-th unit 400, the second processing unit 4〇2, and the third processing ^70^04. Wherein the first processing unit 4 is connected to the power supply 1〇, the electromagnetic interference noise of the first alternating current signal can be filtered out; the second processing unit 4〇2 ^: the processing unit 400 can convert the first alternating current signal into The DC signal; the third hole is connected to the second processing unit 4. 2 'to increase the DC power factor (PF). The power factor value varies between 'the higher the power factor (nears 1), indicating that the power balance of the electronic ballast 4 is close to 100% or the power loss is extremely low. Thereby, the processing module 40 can make the AC signal into - The thief calls the DC signal 'and provides a high-power factor DC signal for the next level. Please refer to FIG. 3 'FIG. 3 for a method of operating an electronic ballast according to an embodiment of the present invention. The electronic mosquito contains a compensation circuit for the frequency of 201026151. The control of the operation of the thunder is stable and the + + 1 # group control, the lamp output = ang tc is controlled by the quasi-linear compensation mode, the following details , &^\路有\=化量··, ί先慎3法ΪStep S6G 'Generate according to the first AC signal == pass 2;:=ΐDevice influence, resulting in the second = ❹ Lu Qiao "From the noise contained in the first-parent city, rectify it ^ directly = signal and mention (four) power factor. When the power factor is closer, the table reading can provide a lower-level stable DC power supply. ~ Connect to ^, the method performs step S62, according to the variable resistance of the adjustment circuit (ΓΓ=/Γί0Γ) ί ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ Electrical resistance = = control of arbitrary changes, but the electric constant of the 'variable electricity 15' and the sum of the value of the device and the sum of the first resistance value. The circuit is followed by 1 towel ^ ^ line / step 364 'root _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The equivalent resistance value can be obtained. The value is ί: raw if method 2: step S66, determining the equivalent resistance of the compensation circuit and the second electrical quantity f, the compensation circuit can include the first-resistive element electric 70 pieces, and the A resistive element and a second resistive element are elements of the 201026151 variable resistor n. The first-resistance of the first-resistance element is arbitrarily changed with the control', and the manner of change thereof is made by the ΐ ΐ (4) , so that the equivalent resistance value is ί ΐϋ / generates a lining compensation signal output Rate: Connected to shengsheng =:=sL〇: According to the DC signal and the quasi-linear compensation signal, the signal is adjusted according to the quasi-linear compensation signal. The second signal is 稳定 ϊΐΐ 交流 交流 交流 交流 交流 交流 交流 交流 交流 交流 交流 交流 交流 交流 二 二 二 二 二 二 二 二 二The converter of the parent machine (DC_Ac hverter) converts the signal of the Yade. The second AC signal system is used to raise the brightness of the lamp to generate the brightness __, and to follow the flow chart of the operation method of the φ device. As shown in the figure = Xunlin should generate the lamp f current of the driving lamp f. According to the tube, the flow determines whether the lamp or wiring is cracked, the lamp, _ or the lamp may be aging, the lamp is broken and the lamp is broken. The production method performs step S86, and outputs a driving signal to integrate the above-mentioned electronic ballast and electronic ballast provided by the present invention. 11 201026151 The linear conversion signal is used to control the lamp current, thereby achieving the effect of controlling the round-out ratio at H and saving energy. In this way, the electronic stability adjusts the flexible dimming system and expands the dimming range, making it easier to operate in accordance with the user's actual needs. The detailed description of the preferred embodiments of the present invention is intended to provide a clearer understanding of the present invention and is not intended to be a preferred embodiment of the invention. ❹ and equal arrangements in this issue, to apply

12 201026151 [Simple Description of the Drawings] Figure 1 is a functional block diagram showing a conventional electronic ballast. Figure 2A is a functional block diagram of an electronic ballast in accordance with an embodiment of the present invention. Figure 2B is a circuit diagram of the compensation circuit of Figure 2A. Figure 2C is a block diagram showing the detailed function of the processing module in Figure 2A. Figure 3 is a diagram showing a method of an aircraft in accordance with an embodiment of the present invention. Wen Zizi Wen Hao

[Main component symbol description] S60~S86: Flow step 20: Electromagnetic interference filter 24: Power correction module 2, 4: Electronic ballast 22: Rectification module and 26, 46: Drive module 30, 50: Lamp Tube 42: adjustment module 48: protection module 40: processing module 44: quasi-linear compensation module 4: first processing unit 13 201026151 402: second processing unit 420: variable resistor 4400: input Ri : first resistance element R3 : third resistance element n 〇 contact 404 : third processing unit 440 : compensation circuit 4402 : output terminal R2 : second resistance element Rth : equivalent resistance value

14

Claims (1)

201026151 VII. Patent application scope: 1. An electronic ballast comprising: a processing module for generating a constant current signal according to a first alternating current signal; an adjusting module for generating an adjustment variation according to the adjustment The magnitude of the change produces a corresponding one of the adjustment signals; A quasi-linear compensation module is coupled to the adjustment module to adjust a compensation circuit according to the adjustment signal, so that the equivalent resistance value change of the compensation circuit is quasi-linear (qUasi_linear And generating a quasi-linear compensation signal; and a driving module coupled to the processing module, the quasi-linear compensation module and a lamp for generating a driving signal to drive the lamp according to the quasi-linear compensation signal tube. 2. The electronic ballast of claim 1, wherein the adjustment module comprises a variable resistor, and the adjustment module is generated according to a change in resistance value of one of the variable resistors. The adjustment change amount is changed in accordance with the amount of change in the resistance value. The electronic ballast of claim 2, wherein the variable resistor comprises a first resistance element and a second resistance element, and the first resistance value of the first resistance element and the second resistance element One of the second resistance values is variable, and the sum of the first resistance value and the second resistance value is a fixed value. 4. The electronic ballast of claim 3, wherein an input end of the compensation circuit is coupled to the first resistance element; a driver terminal coupled to the second resistance element; and -f two兀 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The resistance value and the change of the first resistance value are such that the equivalent between the input terminal and the output terminal 15 201026151 5, 6, Φ 7, φ 9, the resistance value exhibits a quasi-linear change. [The electronic ballast of claim 1, wherein the adjustment module: the action of the rotation or the action of the rotation generates the adjustment of the stabilizer. The electronic ballast includes a supplement. The method includes The following steps: (According to the - AC field generation - DC signal; Qiao, - adjust the amount of change and generate a corresponding adjustment signal according to the magnitude of the change; phase (c) i艮ΐϊ adjustment domain adjustment touch Reimbursing the circuit such that the -I effect=value of the compensation circuit exhibits a quasi-secret change to generate a quasi-secret compensation signal (4) according to the quasi-linear compensation signal generating tube to produce a corresponding-lighting (four). The moving-light is as claimed The method according to Item 6, wherein the amount of change in the node is changed according to a resistance value of one of the variable resistors, and the amount of change in the adjustment is changed according to the amount of change in the resistance value. The method of the sixth aspect, the towel-first resistance element and the second resistance element, the first inclusion-resistance value and the second electrical J value of the (four) resistance element - the first resistance value and the second resistance The sum of the values is a fixed value. = change, the first such as Shen The method of claim 8, wherein the first-resistance member and the second resistive element, when the step includes the resistance value and the second resistance value change, the complement, although the first electrical value That is, the pseudo-linear change is exhibited. The equivalent resistance of the 4-way is the method described in claim 7, wherein the change amount is subjected to a pressing action or a rotating action (b), and the adjustment is 10 ,