CN105101564A - Self-adaptive lamp tube driver - Google Patents
Self-adaptive lamp tube driver Download PDFInfo
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- CN105101564A CN105101564A CN201510545535.1A CN201510545535A CN105101564A CN 105101564 A CN105101564 A CN 105101564A CN 201510545535 A CN201510545535 A CN 201510545535A CN 105101564 A CN105101564 A CN 105101564A
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Abstract
The invention discloses a self-adaptive lamp tube driver which comprises an electronic ballast and a first loop, a second loop, a current detection circuit and a switching circuit, wherein the first loop is formed by serially connecting the electronic ballast with an additional power supply and used for supplying power to a lamp tube, the second loop is used for directly supplying power to the lamp tube by the additional power supply, the current detection circuit is used for detecting the loop current size of the first loop, and the switching circuit is used for controlling connection and disconnection of the first loop and the second loop according to the loop current size of the first loop. In the lamp tube driver disclosed by the invention, the connection or disconnection state of the first loop and the second loop is controlled by the switching circuit according to the type of the lamp tube, so that the switching of a lamp tube power supply mode is fulfilled, and the self-adaptive function of the type of the lamp tube is further achieved. The lamp tube driver can be applicable for driving a light-emitting diode (LED) lamp tube and a fluorescent lamp tube, is low in cost and is easy to implement, and moreover, the traditional ballast does not need to be improved.
Description
Technical field
The present invention relates to lighting technical field, be specifically related to a kind of adaptive lamp tube driver.
Background technology
After entering 21 century, energy and environment seem important all the more, and energy-conserving and environment-protective become the common recognition of people.Current, illumination accounts for about 20% of world's total energy consumption, if the traditional lighting of current poor efficiency, high power consumption can be replaced with low, life-span length, Environmental Safety the LED that consumes energy, a global illumination revolution will be brought undoubtedly, strategic importance will be had more to sustainable development.
In recent years along with the development of LED technology, LED is used widely in practical application.But because traditional tube has the low advantage of cost, being in two kinds of fluorescent tubes at present will coexist.Because LED is different from the principle of luminosity of fluorescent lamp, therefore the drive principle of the two is also different.Fluorescent tube needs just can complete unlatching by ballast and starter, and LED does not then need, and directly allows 220V electric main directly be added to LED lamp tube two ends.
If do not taken down, ballast and starter are just direct to be connect LED daylight lamp, then following situation may occur:
LED fluorescent lamp tube is directly just broken by high pressure;
In LED lamp tube start-up course, the impact of instantaneous pressure to LED lamp tube that ballast produces to estimate, therefore, thus until cause the life-span of LED lamp tube to be cut short;
There is flicker in LED lamp tube, the phenomenon even do not worked;
The power of loss 7 ~ 8W wanted by ballast itself, do not reach energy-conservation object.
Therefore, what develop the ballast of a kind of compatible fluorescent lamp and LED is the focus that lighting field is studied.But because ballast model specification is various, all big enterprises are all different, therefore, LED daylight lamp power supply cannot mate ballast on the market completely, and is enable coupling, and the efficiency of power supply is also very low.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of adaptive lamp tube driver.
A kind of adaptive lamp tube driver, comprises electric ballast, and:
Master switch, described master switch is used for additional power source to be divided into two power supply branch roads selecting an open circuit, and power supply branch road is for lamp tube power supply forms the first loop after described electric ballast, and another power supply branch road is directly lamp tube power supply formation second servo loop;
Current detection circuit, for detecting the loop current size in the first loop;
Commutation circuit, for controlling conducting or the cut-off of the first loop and second servo loop according to the loop current size in the first loop.
Lamp tube driver of the present invention at least can drive a fluorescent tube.When correspondence drives multiple fluorescent tube, the type of each fluorescent tube should be consistent.
" open circuit " in the present invention in " master switch is used for additional power source to be divided into two power supply branch roads selecting an open circuit " must be by master switch open circuit.
Lamp tube driver of the present invention is under initial situation, and the first loop is in conducting, and second servo loop is in cut-off.Because principle of luminosity is different, when fluorescent tube normally works, the resistance of LED lamp tube and the resistance of fluorescent lamp differ greatly, and therefore can judge corresponding to the type of driving fluorescent tube according to the loop current size in the first loop.
Lamp tube driver of the present invention is applicable to driving LED fluorescent tube and fluorescent tube, in use, judge corresponding to be driven the type of fluorescent tube according to the loop current size in the first loop, then controlled conducting or the cut-off state of the first loop and second servo loop by commutation circuit according to the type of fluorescent tube, to complete the switching of lamp tube power supply mode (powered after ballast by additional power source or directly powered by additional power source), and then realize the adaptation function of lamp type.
Described commutation circuit comprises:
Comparing unit, for the loop current size to first threshold that compare the first loop size and export corresponding control signal;
Switch element, makes conducting or the cut-off of the first loop and second servo loop for action under the effect of described control signal.
Described comparing unit is when the loop current in the first loop is greater than first threshold, and the control signal of output is used for the action of control switch unit makes the first loop conducting, and second servo loop ends,
Described comparing unit is when the loop current in the first loop is less than or equal to first threshold, and the control signal of output is used for the action of control switch unit makes the first loop cutoff, second servo loop conducting.
Loop current when the first loop is greater than first threshold, then judge that fluorescent tube is fluorescent lamp or both-end LED lamp tube, now, consider the factors such as energy-conservation and lamp tube service life, additional power source (civil power) needs to power after electric ballast, even if the first loop conducting, second servo loop ends, otherwise, then judge that fluorescent tube is single end LED fluorescent tube, need directly to adopt additional power source, even if the first loop cutoff conducting, second servo loop conducting.
The size of first threshold is arranged according to applicable cases, can adjust during practical application according to application demand.As preferably, described first threshold is 30 ~ 50mA, and as preferably, described first threshold is 50mA.
Described switch element comprises:
With each fluorescent tube the first switches set one to one, at least comprise two switches, to be arranged between the live wire of additional power source in the public output of electric ballast in the first loop and second servo loop and corresponding fluorescent tube on circuit respectively;
With each fluorescent tube second switch group one to one, at least comprise two switches, to be arranged in the voltage output end of electric ballast in the first loop and second servo loop between zero line and corresponding fluorescent tube on circuit respectively.
Using the power supply branch road in second servo loop as the second branch road, in the present invention, in second servo loop, between the live wire of additional power source and corresponding fluorescent tube, circuit is interpreted as the connection line between the power supply branch road that separated by master switch in second servo loop and fluorescent tube.
Mutually link between switch in all switches set and master switch, by when the interlock of each switch realizes the first loop conducting in switches set, ensure second servo loop cut-off.Otherwise, when the first loop cutoff, ensure second servo loop conducting.
In the present invention when driving multiple fluorescent tube, adopt parallel connectivity between each fluorescent tube more, therefore the interlock between the switches set that each fluorescent tube is corresponding should now also be ensured, to make the first loop identical with cut-off state with the conducting of each fluorescent tube place branch road in second servo loop, even if each fluorescent tube adopts identical supply power mode.
Consider Circuit Wiring Problem, the multiple switches in each switches set can be integrated into a variable connector.
Described current detection circuit is also for detecting the loop current size of described second servo loop;
Commutation circuit is also for controlling conducting or the cut-off of the first loop and second servo loop according to the loop current size of second servo loop.
Described comparing unit is when the loop current of second servo loop is greater than Second Threshold, and the control signal of output is used for the action of control switch unit makes the first loop cutoff, second servo loop conducting, and this state is locked.
Lock this state representation in the present invention by the position of each contact in each relay of locking, make it not change, to keep the first loop cutoff, the state of second servo loop conducting is constant.
By further loop current during second servo loop conducting being compared with the Second Threshold preset in the present invention, finally determining lamp type and locking the state of each relay, being conducive to the reliability improving this lamp tube driver of the present invention.
The size of Second Threshold is arranged according to applicable cases, can adjust during practical application according to application demand.As preferably, described Second Threshold is 30 ~ 50mA, and as preferably, described first threshold is 50mA.
Compared with prior art, lamp tube driver of the present invention in use, judge corresponding to be driven the type of fluorescent tube according to the loop current size in the first loop, then controlled conducting or the cut-off state of the first loop and second servo loop according to the type of fluorescent tube by commutation circuit, to complete the switching of lamp tube power supply mode, and then realize the adaptation function of lamp type, driving LED fluorescent tube and fluorescent tube can be applicable to, and without the need to improving existing ballast, with low cost, be easy to realize.
Accompanying drawing explanation
Fig. 1 is the structural representation of the adaptive lamp tube driver of the present embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1 (in figure, dotted line represents control line), the adaptive lamp tube driver of the present embodiment, comprises electric ballast, and:
Master switch, this master switch is used for additional power source to be divided into two power supply branch roads selecting an open circuit, be respectively the first power supply branch road and the second power supply branch road, wherein the first power supply branch road is for lamp tube power supply forms the first loop after electric ballast, and the second power supply branch road is directly for lamp tube power supply forms second servo loop;
Current detection circuit, for the loop current size I of the loop current size and second servo loop that detect the first loop
2;
Commutation circuit, for the loop current size I according to the first loop
1with the loop current size I of second servo loop
2control conducting or the cut-off of the first loop and second servo loop.
In the present embodiment, commutation circuit comprises:
Comparing unit, for the size of the loop current size and first threshold that compare the first loop, also for the size of the loop current size and Second Threshold that compare second servo loop, and exports corresponding control signal according to comparative result;
Switch element, makes conducting or the cut-off of the first loop and second servo loop, comprising for action under the effect of control signal:
With each fluorescent tube the first switches set one to one, at least comprise two switches, to be arranged between the live wire of additional power source in the public output of electric ballast in the first loop and second servo loop and corresponding fluorescent tube on circuit respectively;
With each fluorescent tube second switch group one to one, at least comprise two switches, to be arranged in the voltage output end of electric ballast in the first loop and second servo loop between zero line and corresponding fluorescent tube on circuit respectively.
The lamp tube driver of the present embodiment is for driving two fluorescent tubes, namely this lamp tube driver is one drag two, the electric ballast of corresponding employing is the instant-start electronic ballast of one drag two, there are three outputs, be respectively output 1, output 2 and output 3, wherein output 1 is public output, and output 2 and output 3 are voltage output end.And for being connected in parallel between two fluorescent tubes.The additional power source adopted is civil power, is powered by live wire L and zero line N.
For ease of realizing, the master switch in the present invention and each switches set (comprising the first switches set and second switch group) all adopt integrated variable connector to realize.
Master switch is by having the relay K 1 of double-contact, and relay K 1 comprises common O and two fixed contact, is designated as contact A and contact B respectively.Wherein common O is connected with live wire, by contact A and contact B, live wire input is divided into two power supply branch roads.Wherein, be designated as the first power supply branch road through a road of contact A, be designated as the second power supply branch road through a road of contact B, the first power supply branch road is connected with electric ballast live wire input.
In the present embodiment, (relay K 2 and relay K 3 are direct current relay respectively by relay K 2 and relay K 3 for the first switches set and second switch group, i.e. DC relay), relay K 2 and relay K 3 all have 6 terminals, are respectively terminals 1, terminals 2, terminals 3, terminals 4, terminals 5 and terminals 6.
The connection of each terminals of relay K 2 is as follows:
Terminals 2 are connected with the public output of electric ballast, and terminals 5 are connected with the contact B of relay K 1;
Terminals 1 are connected one end in rear and fluorescent tube mount pad (for ease of describing, namely this end is P end, and the other end is Q end) two terminals (comprising positive terminals and negative terminals) with terminals 4 conducting are connected;
After terminals 3 are connected with terminals 6 conducting, be connected with the positive terminals of the other end (namely Q holds) in two fluorescent tube mount pads respectively.
The connection of each terminals of relay K 3 is as follows:
Terminals 2 and terminals 5 in holding with the Q of two fluorescent tube mount pads respectively positive terminals be connected;
Terminals 1 and terminals 4 are connected with two zero line outputs of electric ballast respectively;
Be connected with the zero line of external power supply after terminals 3 are connected with terminals 6 conducting.
Each relay there is independently control loop, comparing unit export control loop for controlling the break-make of each relay control circuit, to complete the control to relay switch state.
Lamp tube driver in the present embodiment when initial condition, the first loop conducting, now the situation of each switch is as follows:
Relay K 1 holding contact A; The terminals 2 of K2 remain on terminals 1, and terminals 5 remain on terminals 4.
A (), when the loop current in the first loop is greater than first threshold, maintain initial condition constant, i.e. the first loop conducting, now the situation of each switch is as follows:
Relay K 1 holding contact A; The terminals 2 of K2 remain on terminals 1, and terminals 5 remain on terminals 4.
B (), when the loop current in the first loop is less than or equal to first threshold, commutation circuit makes the first loop conducting, second servo loop ends, and now, each switch is in following state:
Relay K 1 holding contact B;
The terminals 2 of relay K 2 remain on terminals 3, and terminals 5 remain on terminals 6;
The terminals 2 of relay K 3 remain on terminals 3, and terminals 5 remain on terminals 6;
Using the state of lamp tube driver now as intermediateness in the present embodiment.
C (), when the loop current of second servo loop is greater than Second Threshold, the control signal of output makes the first loop cutoff, second servo loop ends, and now, each switch is in following state:
Relay K 1 holding contact B;
The terminals 2 of relay K 2 remain on terminals 3, and terminals 5 remain on terminals 6;
The terminals 2 of relay K 3 remain on terminals 3, and terminals 5 remain on terminals 6.
Namely the maintenance intermediateness of lamp tube driver is constant, and further by this state of this locking, using this state as lock-out state in the present embodiment.
Wherein, first threshold is 50mA, and Second Threshold is 50mA.
Above-described embodiment has been described in detail technical scheme of the present invention and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present invention; be not limited to the present invention; all make in spirit of the present invention any amendment, supplement and equivalent to replace, all should be included within protection scope of the present invention.
Claims (8)
1. an adaptive lamp tube driver, is characterized in that, comprises electric ballast, and:
Master switch, described master switch is used for additional power source to be divided into two power supply branch roads selecting an open circuit, and power supply branch road is for lamp tube power supply forms the first loop after described electric ballast, and another power supply branch road is directly lamp tube power supply formation second servo loop;
Current detection circuit, for detecting the loop current size in the first loop;
Commutation circuit, for controlling conducting or the cut-off of the first loop and second servo loop according to the loop current size in the first loop.
2. adaptive lamp tube driver as claimed in claim 1, is characterized in that, described commutation circuit comprises:
Comparing unit, for the loop current size to first threshold that compare the first loop size and export corresponding control signal;
Switch element, makes conducting or the cut-off of the first loop and second servo loop for action under the effect of described control signal.
3. adaptive lamp tube driver as claimed in claim 2, is characterized in that, described comparing unit is when the loop current in the first loop is greater than first threshold, and the control signal of output is used for the action of control switch unit makes the first loop conducting, and second servo loop ends,
Described comparing unit is when the loop current in the first loop is less than or equal to first threshold, and the control signal of output is used for the action of control switch unit makes the first loop cutoff, second servo loop conducting.
4. adaptive lamp tube driver as claimed in claim 2, is characterized in that, described first threshold is 30 ~ 50mA.
5. adaptive lamp tube driver as claimed in claim 2, is characterized in that, described switch element comprises:
With each fluorescent tube the first switches set one to one, at least comprise two switches, to be arranged between the live wire of additional power source in the public output of electric ballast in the first loop and second servo loop and corresponding fluorescent tube on circuit respectively;
With each fluorescent tube second switch group one to one, at least comprise two switches, to be arranged in the voltage output end of electric ballast in the first loop and second servo loop between zero line and corresponding fluorescent tube on circuit respectively.
6. as the adaptive lamp tube driver in claim 2 ~ 5 as described in any one, it is characterized in that, described current detection circuit is also for detecting the loop current size of described second servo loop;
Commutation circuit is also for controlling conducting or the cut-off of the first loop and second servo loop according to the loop current size of second servo loop.
7. adaptive lamp tube driver as claimed in claim 6, it is characterized in that, described comparing unit is when the loop current of second servo loop is greater than Second Threshold, and the control signal of output is used for the action of control switch unit makes the first loop cutoff, second servo loop conducting, and this state is locked.
8. adaptive lamp tube driver as claimed in claim 7, is characterized in that, described Second Threshold is 30 ~ 50mA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510545535.1A CN105101564B (en) | 2015-08-28 | 2015-08-28 | A kind of adaptive lamp tube driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510545535.1A CN105101564B (en) | 2015-08-28 | 2015-08-28 | A kind of adaptive lamp tube driver |
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| CN105101564A true CN105101564A (en) | 2015-11-25 |
| CN105101564B CN105101564B (en) | 2019-03-19 |
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| CN201510545535.1A Active CN105101564B (en) | 2015-08-28 | 2015-08-28 | A kind of adaptive lamp tube driver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282930A (en) * | 2015-10-20 | 2016-01-27 | 晨辉光宝科技有限公司 | Frequency adaptive LED lamp drive circuit |
| CN109041320A (en) * | 2018-05-07 | 2018-12-18 | 朗德万斯公司 | LED pipe |
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| CN201533444U (en) * | 2009-08-18 | 2010-07-21 | 东莞市格尔电器科技有限公司 | Dimmable electronic ballast of LED auxiliary lighting and energy-saving lamp provided with same |
| CN202048538U (en) * | 2011-04-13 | 2011-11-23 | 天津市金悦盛世节能科技有限公司 | Automatic-switch lighting device |
| WO2011144376A1 (en) * | 2010-05-19 | 2011-11-24 | Osram Gesellschaft mit beschränkter Haftung | Circuit arrangement for operating at least one discharge lamp and at least one led |
| CN204906809U (en) * | 2015-08-28 | 2015-12-23 | 浙江晨辉光宝科技有限公司 | Adaptive fluorescent tube driver |
-
2015
- 2015-08-28 CN CN201510545535.1A patent/CN105101564B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201533444U (en) * | 2009-08-18 | 2010-07-21 | 东莞市格尔电器科技有限公司 | Dimmable electronic ballast of LED auxiliary lighting and energy-saving lamp provided with same |
| WO2011144376A1 (en) * | 2010-05-19 | 2011-11-24 | Osram Gesellschaft mit beschränkter Haftung | Circuit arrangement for operating at least one discharge lamp and at least one led |
| CN202048538U (en) * | 2011-04-13 | 2011-11-23 | 天津市金悦盛世节能科技有限公司 | Automatic-switch lighting device |
| CN204906809U (en) * | 2015-08-28 | 2015-12-23 | 浙江晨辉光宝科技有限公司 | Adaptive fluorescent tube driver |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105282930A (en) * | 2015-10-20 | 2016-01-27 | 晨辉光宝科技有限公司 | Frequency adaptive LED lamp drive circuit |
| CN105282930B (en) * | 2015-10-20 | 2018-10-02 | 晨辉光宝科技有限公司 | A kind of LED lamp drive circuit that frequency is adaptive |
| CN109041320A (en) * | 2018-05-07 | 2018-12-18 | 朗德万斯公司 | LED pipe |
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| CN105101564B (en) | 2019-03-19 |
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Effective date of registration: 20190131 Address after: 312369 Chen Hui Industrial Park, Xie Tang Town, Shangyu District, Shaoxing, Zhejiang Applicant after: CHENHUI GUANGBAO TECHNOLOGY CO., LTD. Address before: 312369 Chen Hui Industrial Park, Xie Tang Town, Shangyu District, Shaoxing, Zhejiang Applicant before: Zhejiang Chenhui Guangbao Science and Technology Co., Ltd. |
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Address after: Xie Tang Morninghope Shangyu District Industrial Park 312369 Zhejiang city of Shaoxing Province Patentee after: Chenhuangbao Technology Co., Ltd. Address before: Xie Tang Morninghope Shangyu District Industrial Park 312369 Zhejiang city of Shaoxing Province Patentee before: CHENHUI GUANGBAO TECHNOLOGY CO., LTD. |