CN104619101A - Drive circuit with emergency power supply for fluorescent lamp for tree growth - Google Patents
Drive circuit with emergency power supply for fluorescent lamp for tree growth Download PDFInfo
- Publication number
- CN104619101A CN104619101A CN201510025130.5A CN201510025130A CN104619101A CN 104619101 A CN104619101 A CN 104619101A CN 201510025130 A CN201510025130 A CN 201510025130A CN 104619101 A CN104619101 A CN 104619101A
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- China
- Prior art keywords
- circuit
- power supply
- emergency power
- fluorescent lamp
- relay
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/14—Measures for saving energy, e.g. in green houses
Abstract
The invention relates to a drive circuit with emergency power supply for a fluorescent lamp for tree growth. The technical problem to be solved is that the provided drive circuit with the emergency power supply for the fluorescent lamp for tree growth is simple in structure and capable of providing stable and ceaseless current for the fluorescent lamp. The drive circuit with the emergency power supply for the fluorescent lamp for tree growth comprises a rectifier-filter circuit, a step-down circuit, a light source circuit, and an emergency circuit; the drive circuit is suitable for the field of agricultural trees.
Description
Technical field
The present invention relates to field of agricultural cultivation, be specifically related to a kind of drive circuit of the arboreal growth fluorescent lamp with emergency power supply.
Background technology
In modern agriculture, in order to meet the growth needs of trees, many group light fixtures being often installed and throwing light on, fluorescent lamp due to its irradiated area relatively large, and lighting effect is good, is widely used in agriculture lighting field.
General in the drive circuit of fluorescent lamp, the power supply of fluorescent lamp work obtains after power supply step-down, current existing fluorescent lamp drive circuit is comparatively complicated, its reduction voltage circuit generally adopts capacitance-resistance voltage reduction circuit, the operation principle of capacitance-resistance voltage reduction circuit be utilize electric capacity to produce under certain AC signal frequency capacitive reactance to limit maximum operating currenbt, the output current of this kind of circuit is less, along with the change of input voltage, the brightness of fluorescent lamp also changes thereupon, capacitance-resistance step down type power supply is a kind of non-isolated power supply, fail safe is lower, and, high-frequency noise in fluorescent lamp operating circuit, the violent change of voltage all can affect its illumination effect, in addition, when there is abnormal and open circuit in the power supply of fluorescent lamp, whole illuminator is by cisco unity malfunction, so need to take some means to provide stable to fluorescent lamp in fluorescent lamp drive circuit, continual operating current.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is: provide the drive circuit that a kind of structure is simple, can provide the arboreal growth fluorescent lamp with emergency power supply of stable and uninterrupted electric current for fluorescent lamp.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: with the drive circuit of the arboreal growth fluorescent lamp of emergency power supply, comprise: current rectifying and wave filtering circuit, reduction voltage circuit and circuit of light sources, described drive circuit also comprises emergency circuit, described current rectifying and wave filtering circuit comprises bridge rectifier bridge T1, electric capacity C1 and resistance R1, described reduction voltage circuit comprises diode D1, inductance L 1 and electric capacity C2, described emergency circuit comprises diode D2, relay K J1, resistance R2 and emergency power supply M1, the ac input end of described bridge rectifier bridge T1 is connected with 220V mains supply, one end of the direct current output plus terminal shunt-wound capacitance C1 of described bridge rectifier bridge T1, one end of resistance R1 is connected with one end of inductance L 1 with after the negative pole of diode D1, one end of the other end shunt-wound capacitance C2 of described inductance L 1, the positive pole of diode D2, the power input of circuit of light sources is connected with one end of the normally-closed contact KJ1.3 of relay K J1 with behind one end of the normally opened contact KJ1.1 of relay K J1, be connected with one end of resistance R2 after the coil KJ1.2 of the negative pole serial connection relay K J1 of described diode D2, the other end of the normally opened contact KJ1.1 of described relay K J1 is also connected with the positive pole of emergency power supply M1 after the other end of the normally-closed contact KJ1.3 of contact relay KJ1, the negative pole of described emergency power supply M1 also connects the power output end of circuit of light sources, the other end of resistance R2, the other end of electric capacity C2, the positive pole of diode D1, the other end of resistance R1 with export negative terminal with the direct current of stream bridge T1 after the other end of electric capacity C1 and be connected.
Be serially connected with fuse FU1 between described bridge rectifier bridge T1 and 220V mains supply, described circuit of light sources is become by several LED strip joint groups, and described emergency power supply M1 is 12V lead acid accumulator, and described relay K J1 is current relay.
The present invention compared with prior art has following beneficial effect:
In the present invention, mains supply can be converted to power supply needed for fluorescent lamp by current rectifying and wave filtering circuit, the circuit of light sources of fluorescent lamp is exported to after power supply after conversion is carried out step-down by reduction voltage circuit, wherein, the reduction voltage circuit comprising diode D1, inductance L 1 and electric capacity C2 has abandoned traditional capacitance-resistance voltage reduction circuit, isolation is higher, and fail safe is higher, and stability is better, current rectifying and wave filtering circuit comprises bridge rectifier bridge T1, electric capacity C1 and resistance R1, electric capacity C1 is attempted by the output of bridge rectifier bridge T1, electric capacity C1 can not only filtering bridge rectifier bridge T1 export high-frequency noise, cut off the path that high-frequency noise is undertaken by current supply circuit propagating, and the noise preventing power supply from carrying forms interference to circuit, the waveform that the electric current improving fluorescent light source circuit rises and declines, waveform is made to become mild, reach the object that plateau current is provided to fluorescent lamp, resistance R1 is attempted by the two ends of electric capacity C1, path of releasing is provided for giving electric capacity C1, so that after electric capacity C1 quits work, release its two ends store electric energy, reduction voltage circuit comprises diode D1, inductance L 1 and electric capacity C2, drive circuit in the present invention also comprises emergency circuit, emergency circuit includes emergency power supply M1, when main power circuit normally works, power not only to the circuit of light sources of fluorescent lamp, return emergency power supply M1 to charge, when main power circuit because when abnormal conditions disconnect, emergency circuit to fluorescent light source circuit supply, thus makes fluorescent lamp obtain uninterrupted electric current to work normally.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail;
Fig. 1 is electrical block diagram of the present invention;
In figure: 1 is current rectifying and wave filtering circuit, 2 is reduction voltage circuit, and 3 is circuit of light sources, and 4 is emergency circuit.
Embodiment
As shown in Figure 1, with the drive circuit of the arboreal growth fluorescent lamp of emergency power supply, comprise: current rectifying and wave filtering circuit 1, reduction voltage circuit 2 and circuit of light sources 3, described drive circuit also comprises emergency circuit 4, described current rectifying and wave filtering circuit 1 comprises bridge rectifier bridge T1, electric capacity C1 and resistance R1, described reduction voltage circuit 2 comprises diode D1, inductance L 1 and electric capacity C2, described emergency circuit 4 comprises diode D2, relay K J1, resistance R2 and emergency power supply M1, the ac input end of described bridge rectifier bridge T1 is connected with 220V mains supply, one end of the direct current output plus terminal shunt-wound capacitance C1 of described bridge rectifier bridge T1, one end of resistance R1 is connected with one end of inductance L 1 with after the negative pole of diode D1, one end of the other end shunt-wound capacitance C2 of described inductance L 1, the positive pole of diode D2, the power input of circuit of light sources 3 is connected with one end of the normally-closed contact KJ1.3 of relay K J1 with behind one end of the normally opened contact KJ1.1 of relay K J1, be connected with one end of resistance R2 after the coil KJ1.2 of the negative pole serial connection relay K J1 of described diode D2, the other end of the normally opened contact KJ1.1 of described relay K J1 is also connected with the positive pole of emergency power supply M1 after the other end of the normally-closed contact KJ1.3 of contact relay KJ1, the negative pole of described emergency power supply M1 also connects the power output end of circuit of light sources 3, the other end of resistance R2, the other end of electric capacity C2, the positive pole of diode D1, the other end of resistance R1 with export negative terminal with the direct current of stream bridge T1 after the other end of electric capacity C1 and be connected, described circuit of light sources 3 can be become by several LED strip joint groups, described relay K J1 can be current relay.
Particularly; fuse FU1 is serially connected with between described bridge rectifier bridge T1 and 220V mains supply; the effect of fuse FU1 is to provide circuit safety protection; when short circuit or heavy overload; fuse FU1 fuses circuit is disconnected automatically, thus realizing circuit protection or heavy overload protection.
Under normal circumstances, main power circuit provides stable electric current on the one hand the circuit of light sources 3 of fluorescent lamp, the coil KJ1.2 of relay K J1 is arrived after electric current flows through diode D2 on the other hand, the coil KJ1.2 of relay K J1 obtains electric, the normally opened contact KJ1.1 of relay K J1 closes, the normally-closed contact KJ1.3 of relay K J1 disconnects, now electric current charges to it through the normally opened contact KJ1.1 arrival emergency power supply M1 of relay K J1, when after main power circuit power failure, the coil KJ1.2 dead electricity of relay K J1, the normally opened contact KJ1.1 of the relay K J1 in closure state opens, the normally-closed contact KJ1.3 of the relay K J1 in off-state closes, now emergency power supply M1 stops charging, start to power to the circuit of light sources 3 of fluorescent lamp, realize emergency lighting, particularly, described emergency power supply M1 can be 12V lead acid accumulator, and from the charge characteristic of lead-acid battery, the 12V charging voltage after over commutation can ensure can not cause overshoot in long charging process.
Circuit structure of the present invention is simple, effectively reduce high-frequency noise, voltage violent change on the impact of trees fluorescent lamp operating circuit, provide stable and continual operating current by the fluorescent lamp that is cascaded as of each circuit module, there is outstanding substantive distinguishing features and significant progress; By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.
Claims (5)
1. with the drive circuit of the arboreal growth fluorescent lamp of emergency power supply, comprise: current rectifying and wave filtering circuit (1), reduction voltage circuit (2) and circuit of light sources (3), it is characterized in that: described drive circuit also comprises emergency circuit (4), described current rectifying and wave filtering circuit (1) comprises bridge rectifier bridge T1, electric capacity C1 and resistance R1, described reduction voltage circuit (2) comprises diode D1, inductance L 1 and electric capacity C2, described emergency circuit (4) comprises diode D2, relay K J1, resistance R2 and emergency power supply M1, the ac input end of described bridge rectifier bridge T1 is connected with 220V mains supply, one end of the direct current output plus terminal shunt-wound capacitance C1 of described bridge rectifier bridge T1, one end of resistance R1 is connected with one end of inductance L 1 with after the negative pole of diode D1, one end of the other end shunt-wound capacitance C2 of described inductance L 1, the positive pole of diode D2, the power input of circuit of light sources (3) is connected with one end of the normally-closed contact KJ1.3 of relay K J1 with behind one end of the normally opened contact KJ1.1 of relay K J1, be connected with one end of resistance R2 after the coil KJ1.2 of the negative pole serial connection relay K J1 of described diode D2, the other end of the normally opened contact KJ1.1 of described relay K J1 is also connected with the positive pole of emergency power supply M1 after the other end of the normally-closed contact KJ1.3 of contact relay KJ1, the negative pole of described emergency power supply M1 also connects the power output end of circuit of light sources (3), the other end of resistance R2, the other end of electric capacity C2, the positive pole of diode D1, the other end of resistance R1 with export negative terminal with the direct current of stream bridge T1 after the other end of electric capacity C1 and be connected.
2. the drive circuit of the arboreal growth fluorescent lamp with emergency power supply according to claim 1, is characterized in that: be serially connected with fuse FU1 between described bridge rectifier bridge T1 and 220V mains supply.
3. the drive circuit of the arboreal growth fluorescent lamp with emergency power supply according to claim 1, is characterized in that: described circuit of light sources (3) is become by several LED strip joint groups.
4. the drive circuit of the arboreal growth fluorescent lamp with emergency power supply according to claim 1, is characterized in that: described emergency power supply M1 is 12V lead acid accumulator.
5. the drive circuit of the arboreal growth fluorescent lamp with emergency power supply according to claim 1, is characterized in that: described relay K J1 is current relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025130.5A CN104619101A (en) | 2015-01-19 | 2015-01-19 | Drive circuit with emergency power supply for fluorescent lamp for tree growth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025130.5A CN104619101A (en) | 2015-01-19 | 2015-01-19 | Drive circuit with emergency power supply for fluorescent lamp for tree growth |
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| Publication Number | Publication Date |
|---|---|
| CN104619101A true CN104619101A (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510025130.5A Pending CN104619101A (en) | 2015-01-19 | 2015-01-19 | Drive circuit with emergency power supply for fluorescent lamp for tree growth |
Country Status (1)
| Country | Link |
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| CN (1) | CN104619101A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105979666A (en) * | 2016-08-02 | 2016-09-28 | 惠勇 | Self-adaptive LED drive power supply |
| CN106255281A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of electric power system of DC lighting light fixture |
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
| CN110908211A (en) * | 2019-12-17 | 2020-03-24 | 深圳市光羿科技有限公司 | Electrochromic device control circuit |
-
2015
- 2015-01-19 CN CN201510025130.5A patent/CN104619101A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106255281A (en) * | 2016-08-01 | 2016-12-21 | 合肥联信电源有限公司 | A kind of electric power system of DC lighting light fixture |
| CN106255281B (en) * | 2016-08-01 | 2018-10-26 | 合肥联信电源有限公司 | A kind of power supply system of DC lighting lamps and lanterns |
| CN105979666A (en) * | 2016-08-02 | 2016-09-28 | 惠勇 | Self-adaptive LED drive power supply |
| CN110248455A (en) * | 2019-07-05 | 2019-09-17 | 深圳迈睿智能科技有限公司 | Emergency light and its control circuit and control method and storage method |
| CN110908211A (en) * | 2019-12-17 | 2020-03-24 | 深圳市光羿科技有限公司 | Electrochromic device control circuit |
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Application publication date: 20150513 |