CN204906809U - Adaptive fluorescent tube driver - Google Patents
Adaptive fluorescent tube driver Download PDFInfo
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- CN204906809U CN204906809U CN201520666593.5U CN201520666593U CN204906809U CN 204906809 U CN204906809 U CN 204906809U CN 201520666593 U CN201520666593 U CN 201520666593U CN 204906809 U CN204906809 U CN 204906809U
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Abstract
The utility model discloses an adaptive fluorescent tube driver, including electronic ballast, and: by plus the power concatenate for the the first loop of fluorescent tube power supply behind the electronic ballast, by plus the power directly be the second return circuit that the fluorescent tube was supplied power, current detection circuit for detect the first loop's loop current size, the switching circuit is used for according to the first loop's loop current size control the first loop and switching on or ending of second return circuit. The utility model discloses a fluorescent tube driver is according to type the switching on or off -state through switching circuit control the first loop and second return circuit of fluorescent tube to accomplishing the switching of fluorescent tube power supply mode, and then realizing the self -adaptation function of fluorescent tube type, can be applicable to drive LED fluorescent tube and fluorescent tube, and need not to improve current ballast, low cost easily realizes.
Description
Technical field
The utility model relates to lighting technical field, is 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.
Utility model content
For the deficiencies in the prior art, the utility model 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 utility model 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 utility model 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 utility model 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 utility model 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 utility model, 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 utility model 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 utility model 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 utility model, finally determining lamp type and locking the state of each relay, being conducive to the reliability improving this lamp tube driver of the present utility model.
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 utility model 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, 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 utility model 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 utility model 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 the technical solution of the utility model and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present utility model; be not limited to the utility model; all make in spirit of the present utility model any amendment, supplement and equivalent to replace, all should be included within protection range of the present utility model.
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 |
|---|---|---|---|
| CN201520666593.5U CN204906809U (en) | 2015-08-28 | 2015-08-28 | Adaptive fluorescent tube driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520666593.5U CN204906809U (en) | 2015-08-28 | 2015-08-28 | Adaptive fluorescent tube driver |
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| Publication Number | Publication Date |
|---|---|
| CN204906809U true CN204906809U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520666593.5U Active CN204906809U (en) | 2015-08-28 | 2015-08-28 | Adaptive fluorescent tube driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101564A (en) * | 2015-08-28 | 2015-11-25 | 浙江晨辉光宝科技有限公司 | Self-adaptive lamp tube driver |
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2015
- 2015-08-28 CN CN201520666593.5U patent/CN204906809U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105101564A (en) * | 2015-08-28 | 2015-11-25 | 浙江晨辉光宝科技有限公司 | Self-adaptive lamp tube driver |
| CN105101564B (en) * | 2015-08-28 | 2019-03-19 | 晨辉光宝科技有限公司 | A kind of adaptive lamp tube driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160113 Address after: Xie Tang Morninghope Shangyu District Industrial Park 312369 Zhejiang city of Shaoxing Province Patentee after: CHENHUI GUANGBAO TECHNOLOGY CO., LTD. Address before: Xie Tang Morninghope Shangyu District Industrial Park 312369 Zhejiang city of Shaoxing Province Patentee before: Zhejiang Chenhui Guangbao Science and Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
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. |
|
| CP01 | Change in the name or title of a patent holder |