CN201616943U - Device for energy conversion and energy-saving control of LED streetlamp - Google Patents
Device for energy conversion and energy-saving control of LED streetlamp Download PDFInfo
- Publication number
- CN201616943U CN201616943U CN2010201297582U CN201020129758U CN201616943U CN 201616943 U CN201616943 U CN 201616943U CN 2010201297582 U CN2010201297582 U CN 2010201297582U CN 201020129758 U CN201020129758 U CN 201020129758U CN 201616943 U CN201616943 U CN 201616943U
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- converter
- energy
- voltage
- street lamp
- led
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model relates to a device for energy conversion and energy-saving control of an LED streetlamp. The problem to be solved is to provide a device which can adjust the brightness of the LED streetlamp according to the instruction of the road condition or the control system so as to increase the useful life and save the energy of the LED streetlamp. The utility model adopts the technical scheme: the device for energy conversion and energy-saving control of the LED streetlamp has a host computer or a detection control system which can perceive the external environment or circumstance, which is characterized in that the host computer or the detection control system is connected with a power side DC conversion device through a communication interface; the power side DC conversion device converts a power side AC power source into a changeable DC voltage; the DC voltage is sent to a remote LED constant current converter through a cable; the LED constant current converter converts a changeable DC electric energy sent into a DC constant current source required for the LED streetlamp group. The device is suitable for lighting the urban highway, the tunnel and the like.
Description
Technical field
The utility model relates to field of power supplies, the device of energy conversion of especially a kind of LED street lamp and Energy Saving Control.Be applicable to the illumination of occasions such as urban road and tunnel.
Background technology
High-power LED street lamp is compared with conventional high-pressure sodium lamp street lamp, has efficient, safety, energy-saving and environmental protection, the life-span is long, response speed is fast, the advantage of the high uniqueness of color rendering index, can be widely used in the illumination of occasions such as urban road and tunnel.
At present, the LED lighting technology reaches its maturity, and the high-power LED light source effect reaches about 1001m/W, thereby makes city street lamp, tunnel illumination reducing energy consumption become possibility.LED street lamp, particularly high-power LED street lamp are just with swift and violent velocity shock conventional road lamp market.
The LED street lamp has had very big change than conventional road lamp aspect power saving, but the power consumption of LED and life-span are still depended on time and illumination brightness that LED lights.At present, the LED street lamp generally adopts simple constant current control mode, can not carry out brightness of illumination control as required, does not have especially at dead of night under the situation of pedestrian and vehicle rareness, and street lamp is also pressed normal brightness in illumination, has both wasted electric energy, also influences the street lamp life-span; And in the tunnel street lighting, whether the car process being arranged, brightness causes great waste as usual.
At above problem, the existing technology that the LED lamp is carried out light modulation, the single lamp of general employing is regulated way: each LED street lamp, adopt controlled constant current control mode, control signal adopts draws pilot wire system separately, the wireless transmission of employing control model is also arranged, and also having a kind of is to adopt power line using transmission of control signals mode.Though can reach the purpose of dimming energy-saving, there is following problem in these modes: led driver control is complicated, and reliability reduces, the cost height, and adopt the control line form of drawing separately, increase wiring cost and increase legacy system reducing energy consumption difficulty.
Summary of the invention
The technical problems to be solved in the utility model is: at above problem, the device of energy conversion of a kind of LED street lamp and Energy Saving Control is provided, this device can be regulated the brightness of LED street lamp according to the instruction of road surface situation or control system, thereby increases the useful life and the conserve energy of LED street lamp.
The technical scheme that the utility model adopted is: the device of energy conversion of LED street lamp and Energy Saving Control, have the host computer of energy perception external environment condition or situation or detect control system, it is characterized in that: described host computer or detection control system are connected with electric power side dc converter through communication interface, electric power side dc converter is converted to transformable direct voltage with the AC AC power of electric power side, this direct voltage is through the LED constant-current converter of cable transmission to far-end, and the LED constant-current converter will transmit the transformable direct current energy that comes and be converted to the needed dc constant current power supply of LED street lamp group.
Described host computer or the host computer that detects in the control system are equipped with timer control routine, comprise light sensation transducer or moving image transducer and detect control system.
Described electric power side dc converter is the AC/DC converter, and it is by High Power Factor Rectifier Circuit, LLC resonant transform circuit, communication interface chip U
2, single-chip microcomputer U
3, D/A converter U
4, operational amplifier U
5AWith voltage controlled oscillator U
5And isolated drive circuit is formed; The AC-input voltage of electric power side is boosted through High Power Factor Rectifier Circuit and is high direct voltage, the more required direct voltage that obtains isolating through the LLC resonant transform circuit; Meanwhile, from host computer or detect the control command that control system transmits, through communication interface chip U
2Be transferred to single-chip microcomputer U
3, Single-chip Controlling D/A converter U
4Simulation output, this analog signal is again through operational amplifier U
5AWith voltage controlled oscillator U
5Obtain square-wave output signal, through frequency divider U
6BBe transferred to isolated drive circuit behind the frequency division, isolated drive circuit is by driving the power device in the LLC resonant transform circuit, and the output voltage that makes the LLC resonant transform circuit changes with the difference of control signal frequency.
Described LED constant-current converter is the DC/DC converter, and it is by input voltage proportional amplifier, current sample amplification and feedback control circuit, pwm chip IC
1, power MOSFET tube Q
1Form with constant-current converter output voltage feedback control circuit; Described input voltage proportional amplifier is according to the difference of the input voltage of coming from cable transmission, output and the proportional signal of input voltage, this signal is input to current sample amplification and feedback control circuit as the benchmark of Current Feedback Control, and what current sample amplified and feedback control circuit is produced can be transferred to pwm chip IC again according to the control signal of input voltage change
1Thereby power controlling MOSFET manages Q
1Duty cycle of switching, make LED street lamp group obtain required constant current; When output voltage surpasses maximum set value, then come control chip IC through constant-current converter output voltage feedback control circuit
1Pwm signal.
Can articulate batteries on demand on the bus in the middle of the described electric power side dc converter; And electric power side dc converter can adopt " N+M " module redundancy parallel form.
The beneficial effects of the utility model are: this device can be finished the control to LED street lamp illumination according to the instruction of road surface situation or control system, can increase the useful life and the conserve energy of LED street lamp; The utility model can also be applied to the illumination of traffic tunnel, and when car passed through, checkout gear sent the brightness enhancing signal, LED light in the tunnel brightens, when not having vehicle through out-of-date, brightness deepening or all close, thus reach energy-conservation and prolong the LED lamp purpose in useful life; The utility model had both transmitted energy by high-voltage power line, transmitted the illumination control signal again, and system cost is low, and is easy to use, and energy-saving effect is obvious.
Description of drawings
Fig. 1 is a circuit block diagram of the present utility model.
Fig. 2 is the circuit block diagram of electric power side dc converter among Fig. 1.
Fig. 3 is the electrical schematic diagram of the utility model electric power side dc converter.
Fig. 4 is the electrical schematic diagram of the utility model LED constant-current converter.
Embodiment
As shown in Figure 1, present embodiment has the host computer of energy perception external environment condition or situation or detects control system 1, and described detection control system can comprise the checkout gear of perception external environment conditions such as light sensation transducer or moving image transducer.Host computer or detection control system 1 can have timer control routine, or have intelligent detection equipments such as light sensation transducer, moving image transducer, with detected information, press blas, provide corresponding illumination control signal, pass to electric power side dc converter 2 through communication interface 1-1.Electric power side dc converter is used for the AC AC power of electric power side is converted to the direct voltage that can change (0-400V).This direct voltage is transferred to the LED constant-current converter 4 of far-end through cable 3.LED street lamp constant-current converter will transmit the transformable direct current energy that comes and be converted to LED street lamp group 5 needed dc constant current power supplies.
As Fig. 2, shown in Figure 3, described electric power side dc converter 2 is the AC/DC converter, and it is by High Power Factor Rectifier Circuit, LLC resonant transform circuit, communication interface chip U
2, single-chip microcomputer U
3, D/A converter U
4, operational amplifier U
5AWith voltage controlled oscillator U
5And isolated drive circuit is formed.Wherein High Power Factor Rectifier Circuit has PFC control chip U
1(model UC3854 also can adopt other PFC special chip to realize) and full-bridge rectifier BR
1, inductance L
1, power tube Q
1And capacitor C
1, C
2, this module has the PFC power factor emendation function, makes the ac-side current waveform near mains voltage waveform, and power factor reaches more than 0.99.The AC-input voltage of electric power side becomes the high direct voltage about about 400V after High Power Factor Rectifier Circuit is boosted.This high direct voltage is again via power tube Q
2～Q
5, transformer T
1, inductance L
2, capacitor C
3, diode D
3～D
6And capacitor C
4The LLC resonant transform circuit of forming promptly obtains the required direct voltage of isolating.Meanwhile, from host computer or detect the control command that control system 1 transmits, through communication interface chip U
2Be transferred to single-chip microcomputer U
3(89C51), Single-chip Controlling D/A converter U
4(TLV5618) simulation output, U
4Pin 4 provide the output voltage reference voltage by instruction, the feedback signal of this voltage and output voltage is through resistance R
15, R
16, R
17, R
18, capacitor C
10And operational amplifier U
5A(LM358) the PID feedback regulation of Zu Chenging is by U
5A(LM358) pin 1 reaches U
5(CD4046) voltage controlled oscillator, U
5Pin 4 be the oscillator square-wave output signal, through frequency divider U
6B(CD4013) frequency division is transferred to isolated drive circuit, is driven the power device Q of LLC resonant transform circuit by isolated drive circuit
2～Q
5Thereby make the output voltage of LLC resonant transform circuit changing between the 0-400V: when the brightness illumination of needs along with the difference of control signal frequency, output voltage is ceiling voltage 400V, when needs during for half illumination, voltage drop is low to moderate certain median, as 200V, when the needs Close All, voltage drops to certain lower value, below 100V.For ease of expansion and increase redundancy feature, it is required that this converting means is pressed LED street lamp group power, can be configured to " N+M " redundant form, wherein N module is for meeting the required module of LED street lamp group rated power, M module is then as redundant configuration: when being less than M module and breaking down, whole system can normally be exported power demand, does not influence illumination.For satisfying tunnel etc. the occasion that lighting requirement can not be interrupted is used, electric power side dc converter 2 has the function of the batteries of articulating: at civil power just often, by civil power to batteries charging, when the civil power power down, continuing conversion by batteries provides energy, supplies with the effect of LED lamp electric energy, continuous illumination to reach not have a power failure.
As shown in Figure 4, described LED constant-current converter 4 is the DC/DC converter, and it has comprised: by resistance R
11-R
15With operational amplifier IC
2-AThe input voltage proportional amplifier of forming; By operational amplifier IC
2-C(LM324) and IC
2-D, resistance R
24-27And resistance R
16-18The current sample of forming amplifies and feedback control circuit; Pwm chip IC
1(UC3844); Power MOSFET tube Q
1With by resistance R
19-23, operational amplifier IC
2-BAnd diode D
3The constant-current converter output voltage feedback control circuit that constitutes.Described input voltage proportional amplifier is according to the difference of the input voltage that transmits from cable 3, its operational amplifier IC
2-APin 1 output and the proportional signal of input voltage, this signal as the benchmark of Current Feedback Control through IC
2-CPin 10 be input to that current sample amplifies and feedback control circuit, the control signal that current sample amplifies and feedback control circuit is produced can change according to input voltage is again through D
9Be transferred to pwm chip IC
1Pin 1, IC
1Pin 6 according to the level of pin 1, power controlling MOSFET manages Q
1Duty cycle of switching, thereby make LED street lamp group 5 obtain required constant current, and this electric current can change according to the change of input voltage, makes the LED street lamp realize dimming function.When the voltage of output surpasses maximum set value, then through constant-current converter output voltage feedback control circuit through D
3Come control chip IC
1Pwm signal, make voltage be stabilized in maximum, damage element in order to avoid produce high pressure.
In the utility model, the high-voltage dc voltage of electric power side dc converter 2 is transferred to far-end LED constant-current converter 4 through two core power cables 3, because the raising of rated operational voltage, transmission is with long-pending can the reducing of the required cross-section of cable of the electric energy of constant power, square being inversely proportional to of required sectional area and voltage: as adopting the transmission of 400V direct voltage, compare with adopting single-phase 220V AC voltages transmission, its sectional area can be reduced to (220/400) of 220V system
2=0.3 times, thus the cable investment can be saved.
Claims (6)
1. the device of LED street lamp energy conversion and Energy Saving Control, have the host computer of energy perception external environment condition or situation or detect control system (1), it is characterized in that: described host computer or detection control system (1) are connected with electric power side dc converter (2) through communication interface (1-1), electric power side dc converter is converted to transformable direct voltage with the AC AC power of electric power side, this direct voltage is transferred to the LED constant-current converter (4) of far-end through cable (3), and the LED constant-current converter will transmit the transformable direct current energy that comes and be converted to the needed dc constant current power supply of LED street lamp group (5).
2. the device of LED street lamp according to claim 1 energy conversion and Energy Saving Control, it is characterized in that: described host computer or the host computer that detects in the control system (1) are equipped with timer control routine, comprise light sensation transducer or moving image transducer and detect control system.
3. the device of LED street lamp according to claim 1 and 2 energy conversion and Energy Saving Control, it is characterized in that: described electric power side dc converter (2) is the AC/DC converter, and it is by High Power Factor Rectifier Circuit, LLC resonant transform circuit, communication interface chip U
2, single-chip microcomputer U
3, D/A converter U
4, operational amplifier U
5AWith voltage controlled oscillator U
5And isolated drive circuit is formed; The AC-input voltage of electric power side is boosted through High Power Factor Rectifier Circuit and is high direct voltage, the more required direct voltage that obtains isolating through the LLC resonant transform circuit; Meanwhile, from host computer or detect the control command that control system (1) transmits, through communication interface chip U
2Be transferred to single-chip microcomputer U
3, Single-chip Controlling D/A converter U
4Simulation output, this analog signal is again through operational amplifier U
5AWith voltage controlled oscillator U
5Obtain square-wave output signal, through frequency divider U
6BBe transferred to isolated drive circuit behind the frequency division, isolated drive circuit is by driving the power device in the LLC resonant transform circuit, and the output voltage that makes the LLC resonant transform circuit changes with the difference of control signal frequency.
4. the device of LED street lamp according to claim 1 and 2 energy conversion and Energy Saving Control, it is characterized in that: described LED constant-current converter (4) is the DC/DC converter, and it is by input voltage proportional amplifier, current sample amplification and feedback control circuit, pwm chip IC
1, power MOSFET tube Q
1Form with constant-current converter output voltage feedback control circuit; Described input voltage proportional amplifier is according to the difference of the input voltage that transmits from cable (3), output and the proportional signal of input voltage, this signal is input to current sample amplification and feedback control circuit as the benchmark of Current Feedback Control, and what current sample amplified and feedback control circuit is produced can be transferred to pwm chip IC again according to the control signal of input voltage change
1Thereby power controlling MOSFET manages Q
1Duty cycle of switching, make LED street lamp group (5) obtain required constant current; When output voltage surpasses maximum set value, then come control chip IC through constant-current converter output voltage feedback control circuit
1Pwm signal.
5. the device of LED street lamp according to claim 3 energy conversion and Energy Saving Control is characterized in that: articulate batteries on the bus in the middle of the described electric power side dc converter (2).
6. the device of LED street lamp according to claim 3 energy conversion and Energy Saving Control is characterized in that: described electric power side dc converter (2) adopts " N+M " module redundancy parallel form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201297582U CN201616943U (en) | 2010-02-09 | 2010-02-09 | Device for energy conversion and energy-saving control of LED streetlamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201297582U CN201616943U (en) | 2010-02-09 | 2010-02-09 | Device for energy conversion and energy-saving control of LED streetlamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616943U true CN201616943U (en) | 2010-10-27 |
Family
ID=43003302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201297582U Expired - Fee Related CN201616943U (en) | 2010-02-09 | 2010-02-09 | Device for energy conversion and energy-saving control of LED streetlamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616943U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102858064A (en) * | 2012-08-29 | 2013-01-02 | 茂硕电源科技股份有限公司 | LED (light emitting diode) centralized drive power parallel system |
| CN103248109A (en) * | 2012-02-09 | 2013-08-14 | 黄跃辉 | Lighting security device for public area in urban |
| CN107040142A (en) * | 2017-05-25 | 2017-08-11 | 无锡三石电子有限公司 | Based on the topological wide-range voltage output charger control circuits of PFC and LLC |
-
2010
- 2010-02-09 CN CN2010201297582U patent/CN201616943U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103248109A (en) * | 2012-02-09 | 2013-08-14 | 黄跃辉 | Lighting security device for public area in urban |
| CN102858064A (en) * | 2012-08-29 | 2013-01-02 | 茂硕电源科技股份有限公司 | LED (light emitting diode) centralized drive power parallel system |
| CN107040142A (en) * | 2017-05-25 | 2017-08-11 | 无锡三石电子有限公司 | Based on the topological wide-range voltage output charger control circuits of PFC and LLC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20140209 |