CN104812149A - LED (Light Emitting Diode) project lamp intelligent illumination control system - Google Patents
LED (Light Emitting Diode) project lamp intelligent illumination control system Download PDFInfo
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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
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- 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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Abstract
The invention discloses an LED (Light Emitting Diode) project lamp intelligent illumination control system, which comprises a synchronous rectification unit which is used for providing a direct current power source for at least two intelligent power source control units, and a light intensity sensor which is used for providing light intensity information for the intelligent power source control units, wherein the light intensity sensor is electrically connected with the intelligent power source control units; the output end of each intelligent power source control unit is connected with a corresponding LED (Light Emitting Diode) lamp bank unit by a wire; the synchronous rectification unit is connected with each intelligent power source control unit by a high-voltage direct current bus. According to the LED project lamp intelligent illumination control system, the work environment temperature of an LED lamp bank is improved, the thermal radiation caused to the LED lamp bank by a power device can be reduced, and since the environment temperature of the LED lamp bank can be greatly reduced, the reliability and the service life of the LED lamp bank can be improved and prolonged. The LED project lamp intelligent illumination control system is mounted in a split mode, the installation is convenient, the maintenance probability is greatly reduced, and the maintenance cost is saved.
Description
Technical field
The present invention relates to lighting technical field, specifically a kind of LED projector lamp intelligent lighting system.
Background technology
LED is because of advantages such as it is energy-conservation, long-lived, environmental protection, more and more higher in the occupation rate of illumination market.The range of application of LED is also more and more wider, and LED projector lamp is exactly wherein a kind of.Due to LED chip light decay except and encapsulating material, outside the Pass fluorescent material decay has, more chief reason is that the heat produced in LED chip luminescence process makes the PN junction junction temperature of LED chip rise, according to the temperature characteristics of LED chip, temperature rise LED chip is allowed maximum operating currenbt reduce, so under constant current drives, LED chip light decay is aggravated, lifetime, therefore high-power illumination LED is formed primarily of LED drive control power supply and LED group at present, mainly there is following problem in it: 1, the light decay of LED chip is very fast, the luminous flux after a period of time is used obviously to reduce.2, useful life is low, and reliability is poor, than theoretic 100,000 little time useful life difference far away.3, the useful life due to LED drive chip is shorter for useful life than LED light source chip, changing artificial and equipment operation cost that LED driver produces far above the value of driver itself, safeguards that use cost rises greatly.
The LED projector lamp driving power great majority used in the market are driving powers that every lamp joins that a mains turns direct current, and by LED group and rectifier, the overall structure that Switching Power Supply driver is packaged together, and temperature is one of the main factor in LED chip light efficiency and life-span, because overall dissipation heat is large, the operating ambient temperature of LED group is made to be in abnormal condition, therefore the forward current of allowing can significantly reduce, as easy as rolling off a logly cause LED chip premature depletion, even directly damage LED chip, the reliability of LED group and life-span are produced a very large impact.Secondly because LED group and driving power integrate, volume is large, is not easy to Design of Luminaires and installation.
Summary of the invention
The object of the present invention is to provide a kind of LED projector lamp intelligent lighting system, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technical scheme:
A kind of LED projector lamp intelligent lighting system, comprise the synchronous rectification unit for providing DC power supply at least two intelligent power control units, and provide the light intensity sensor of intensity signal for intelligent power control unit, light intensity sensor electrical connection intelligent power control unit, each intelligent power control unit output is connected with corresponding LED group unit by electric wire, and synchronous rectification unit is connected with each intelligent power control unit by high voltage dc bus.
As the further scheme of the present invention: described synchronous rectification unit comprises three-phase PWM synchronous rectification module and DC-DCBuck conversion module, described three-phase PWM synchronous rectification module comprises ac circuit, Intelligent Power Module, DC loop, phase shortage and circuit of testing the phase sequence, the electric current and voltage Acquisition Circuit of AC, control relay circuit, the voltage collection circuit of DC side, the state detection circuit of DC side, for the DSP primary processor of PWM control algolithm, for carrying out MCU processor and a photoelectric isolated driver of protecting control to three-phase PWM synchronous rectification module.
As the present invention's further scheme: described ac circuit comprises the three-phase isolation transformer and three-phase electrical relay that are serially connected in three-phase alternating current, DC loop is made up of the resistance R of parallel connection and electric capacity C, ac circuit connects DC-DCBuck conversion module through Intelligent Power Module and DC loop, the phase shortage and the circuit of testing the phase sequence that are connected to three-phase isolation transformer input connect the input of a MCU processor respectively with the state detection circuit of the voltage collection circuit one end being connected to DC side in DC loop, the output of the one MCU processor is connected with the control end of three-phase electrical relay by control relay circuit.
As the present invention's further scheme: the electric current and voltage Acquisition Circuit being connected to the AC of relay output end and the voltage collection circuit being connected to the DC side in DC loop connect the input of DSP primary processor respectively, the PWM output of DSP primary processor connects the drive end of Intelligent Power Module by photoelectric isolated driver, liquid crystal display is connected with DSP primary processor input respectively by optical coupling isolator with input through keyboard circuit.
As the present invention's further scheme: described intelligent power control unit comprise surge protection circuit, EMI filter circuit, auxiliary power module, voltage-limiting current-limiting protection circuit, failure detector circuit, for carrying out the 2nd MCU processor that dynamic light adjustment and light on and off control to LED group unit, for generation of the pwm control circuit of pwm signal and for receiving the communication module of outer needles to LED lamp unit command signal and up-delivering signal.
As the present invention's further scheme: DC-DCBuck conversion module connects the input of surge protection circuit by high voltage dc bus, surge protection circuit is through EMI filter circuit, voltage-limiting current-limiting protection circuit connects LED group unit to provide power supply, the failure detector circuit be connected with LED array lamp connects the 2nd MCU processor, the output of EMI filter circuit is connected with the input of auxiliary power module, auxiliary power module connects the power end of the 2nd MCU processor and communication module respectively, 2nd MCU processor connects the PWM control end of LED group unit by pwm control circuit, communication module is connected with the communication ends of the 2nd MCU processor.
As the present invention's further scheme: light intensity sensor connects the 2nd MCU processor.
As the present invention's further scheme: described LED group unit comprises DC-DC constant-current source and LED array lamp.
As the present invention's further scheme: described ac circuit also has three-phase protective tube and three-phase net side inductance L, and three-phase protective tube is connected on the input of three-phase isolation transformer respectively, the input termination three-phase net side inductance L of three-phase electrical relay.
As the present invention's further scheme: the electric current and voltage Acquisition Circuit of described AC adopts the bidirectional power can the measuring six road signals/electric energy metrical integrated chip with serial line interface simultaneously.
Compared with prior art, the invention has the beneficial effects as follows: 1, synchronous rectification unit and intelligent power control unit are connected with the split of LED group unit by this LED projector lamp intelligent lighting system, especially synchronous rectification unit is connected with intelligent power control unit by high voltage dc bus, therefore synchronous rectification unit, intelligent power control unit and LED group unit can partial installations, not only can be separated the synchronous rectification unit of high heat dissipation and intelligent power control unit and LED group unit physically, improve LED group operating ambient temperature, reduce power device to the thermal radiation of LED group, synchronous rectification unit and intelligent power control unit is made no longer to become the primary factor of restriction high-powered LED lamp work, due to the ambient temperature of LED group significantly can be reduced, therefore reliability and the life-span of LED group can be improved.LED illumination intelligent control system of the present invention adopts partial installation, not only easy for installation, also greatly reduces the probability of maintenance simultaneously, saves maintenance cost; 2, this LED projector lamp intelligent lighting system by light intensity sensor for the 2nd MCU processor provides intensity signal, 2nd MCU processor controls the brightness of LED group unit according to light conditions, LED group unit is made not to be always operating at maximum power state, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the structural representation of LED projector lamp intelligent lighting system.
Fig. 2 is the structural representation of three-phase PWM synchronous rectification module in LED projector lamp intelligent lighting system.
Fig. 3 is PWM rectify control algorithm flow.
Fig. 4 is the structural representation of LED intelligent power control unit in LED projector lamp intelligent lighting system.
Fig. 5 is LED array lamp string array circuit figure in LED projector lamp intelligent lighting system.
Fig. 6 is electric current and voltage Acquisition Circuit schematic diagram in LED projector lamp intelligent lighting system.
Fig. 7 is direct voltage Acquisition Circuit schematic diagram in LED projector lamp intelligent lighting system.
Fig. 8 is phase shortage and circuit of testing the phase sequence schematic diagram in LED projector lamp intelligent lighting system.
Fig. 9 is state detection circuit schematic diagram in LED projector lamp intelligent lighting system.
Figure 10 is surge protection circuit schematic diagram in LED projector lamp intelligent lighting system.
Figure 11 is voltage-limiting current-limiting protection circuit theory diagrams in LED projector lamp intelligent lighting system.
Figure 12 is failure detector circuit schematic diagram in LED projector lamp intelligent lighting system.
Embodiment
Be described in more detail below in conjunction with the technical scheme of embodiment to this patent.
Refer to Fig. 1-12, a kind of LED projector lamp intelligent lighting system, comprise the synchronous rectification unit for providing DC power supply at least two intelligent power control units, and provide the light intensity sensor of intensity signal for intelligent power control unit, light intensity sensor electrical connection intelligent power control unit, each intelligent power control unit output is connected with corresponding LED group unit by electric wire, synchronous rectification unit is connected with intelligent power control unit by each high voltage dc bus, there is provided constant voltage DC to many intelligent powers control unit by synchronous rectification unit, and each intelligent power control unit completes drived control and the detection of respective corresponding LED group unit, power supply and pwm control signal is provided to LED group unit.
Described synchronous rectification unit comprises three-phase PWM synchronous rectification module and DC-DCBuck conversion module.As shown in Figure 2, three-phase PWM synchronous rectification module of the present invention comprise ac circuit, Intelligent Power Module, DC loop, phase shortage and circuit of testing the phase sequence, the electric current and voltage Acquisition Circuit of AC, control relay circuit, direct voltage Acquisition Circuit, DC side state detection circuit, for the DSP primary processor of PWM control algolithm and MCU processor and the photoelectric isolated driver for carrying out protecting control to system.DC-DCBuck conversion module of the present invention adopts conventional Buck type DC-DC change-over circuit.Intelligent Power Module and IPM adopt low-power consumption, high performance IGBT; device for power switching and drive circuit are integrated; and be built-in with the failure detector circuits such as overcurrent protection, overtemperature protection, control voltage under-voltage protection; volume is reduced than the power brachium pontis being used alone six IGBT and fly-wheel diode composition; cost-saving, as Intelligent Power Module selects IKCS22F60F2A or IKCS22F60F2C.DSP primary processor of the present invention selects the TMS320F28X series Digital signal processing chip of TI company, as TMS320F2812, high performance DSP kernel and abundant peripheral hardware are integrated in a chip, have that precision is high, the fast and integrated level high of speed, there is provided than traditional microprocessor and the more powerful function of microcontroller, complete separately PWM control algolithm by DSP primary processor as main control chip.A MCU processor of the present invention can adopt the MPS430F14 family chip of TI company, as MPS430F149.
Ac circuit connects DC-DCBuck conversion module through Intelligent Power Module and DC loop, transports to intelligent power control unit after alternating current being carried out rectification by Intelligent Power Module after the step-down of DC-DCBuck conversion module.As shown in Figure 2, ac circuit of the present invention comprises and is serially connected in three-phase isolation transformer on three-phase alternating current and three-phase electrical relay, this ac circuit also has three-phase protective tube and three-phase net side inductance L, three-phase protective tube is connected on the input of three-phase isolation transformer respectively, the output of three-phase electrical relay is connected to three-phase net side inductance L, the input termination three-phase alternating current of three-phase PWM synchronous rectification module, specified phase voltage is 220V, three-phase alternating current e
abcconnect three-phase isolation transformer through three-phase protective tube, and three-phase isolation transformer adopts the isolating transformer of 1:1, can isolate, and protected intelligent control system by protective tube and three-phase electrical relay ac grid voltage.As shown in Figure 2, DC loop of the present invention is made up of the resistance R of parallel connection and electric capacity C.As shown in Figure 2, the state detection circuit that the present invention is connected to the phase shortage of three-phase isolation transformer input and circuit of testing the phase sequence and is connected to DC side in DC loop connects the input of a MCU processor respectively, and the output of a MCU processor is connected with the control end of three-phase electrical relay by control relay circuit.
The electric current and voltage Acquisition Circuit of AC adopts the bidirectional power simultaneously can the measuring six road signals/electric energy metrical integrated chip with serial line interface, by being connected on one piece of CS5451A chip in three-phase electricity or three pieces of CS5460A to complete the sampling of three-phase electricity voltage and current, this CS5460A chip carries out exchanges data by the SPI serial port of the SPI serial ports that carries and DSP, spi bus interface is adopted to simplify circuit design, distant serial synchronous telecommunications circuit is formed with DSP primary processor, save the interface circuit in custom circuit and I/O line, improve the reliability of design.
Direct voltage Acquisition Circuit comprises Hall voltage transducer, sampling resistor R3, resistance R2, R4 ~ R6, and power operational amplifier LF353_1, LF353_2 and fast recovery diode D1, D2, Hall voltage transducer is by sampling resistor R3 and two power operational amplifier LF353_1, LF353_2, and after fast recovery diode D1 and D2 clamper, direct voltage collection signal is transported to DSP primary processor through resistance R6, resistance R2, R3, electric capacity C1 forms RC filter circuit to input signal filtering, resistance R5 is connected in parallel on amplifier input and output side, and the input of operational amplifier LF353_2 is accessed through resistance R4.
Phase shortage and circuit of testing the phase sequence comprise Phase sequence detection IC integrated circuit TH221A chip, input dropping resistor R7 ~ R9, electric capacity C3, light-emitting diode D3 and D4 and level conversion J composition.Three-phase alternating current A, B, C accesses the power input 1 of TH221A chip respectively after input dropping resistor R7 ~ R9, 3, 5 pins, pin 7 connects power supply ground, pin 17 meets chip operation power supply+15V, if control outer contact relay, pin 12 connects the power end of direct current relay, a MCU processor corresponding controling end mouth is accessed after the outer contact relay of pin 13 or level conversion, pin 14 is the normal display end of phase sequence, sending and receiving optical diode D4 negative electrode, pin 16 sending and receiving optical diode D4 anode, and by ground connection after electric capacity C3, pin 15 is phase sequence mistake display end, by light-emitting diode D3 ground connection, the three-phase alternating current of input is detected in real time by phase shortage and circuit of testing the phase sequence, with when phase shortage and phase sequence go out reason mistake, the fault-signal detected can be passed to a MCU processor.As shown in Figure 9, state detection circuit one end of the present invention is connected with direct voltage Acquisition Circuit, the detection of its voltage can the direct voltage being transferred to DSP primary processor of direct multiplexing direct voltage Acquisition Circuit collection, state detection circuit mainly completes the current detecting of DC side, comprise resistance R10 ~ R14, electric capacity C4 ~ C6, power operational amplifier LM358D_1, LM358_2 and linear optical coupling HCNR200, resistance R10 is sampling resistor, signal accesses linear optical coupling HCNR200 after power operational amplifier LM358D_1 amplifies, export after power operational amplifier LM358_2 again and be sampled signal, resistance R13 and electric capacity C5, resistance R14 and electric capacity C6 forms RC filter circuit respectively to output signal filtering.When being short-circuited, open circuit, overload time the status signal of detection is passed to a MCU processor, control by a MCU processor safety that three-phase electrical relay disconnects protection synchronous rectification unit.
The electric current and voltage Acquisition Circuit that the present invention is connected on the AC of relay output end connects the input of DSP primary processor with the voltage collection circuit of the DC side be connected in DC loop, and the PWM output of DSP primary processor connects the drive end of Intelligent Power Module by photoelectric isolated driver, by the signal input that the voltage and current of AC and the voltage of DC side control as PWM, DSP primary processor is according to PWM double-loop control algorithm output pulse width modulation (PWM) signal, pwm signal exports through photoelectric isolated driver can the signal of Direct driver IGBT, this photoelectric isolated driver adopts 6ED003L06-F, phase voltage is the three-phase alternating current civil power of 220V is transformed to 570V direct current through three-phase PWM synchronous rectification module synchronous rectifying, again through DC-DCBuck conversion module, the step-down of 570V direct current is converted to the constant voltage DC transmitted on road of 400V.As shown in Figure 2, liquid crystal display of the present invention is connected with DSP primary processor input every device respectively by optocoupler with input through keyboard circuit, and input through keyboard circuit can input instruction or modify instruction.As shown in Figure 3, be the PWM control algolithm that the present invention is realized by DSP main control chip.PWM of the present invention controls to adopt double-loop control, i.e. outer voltage and current inner loop, and outer voltage controls the voltage of DC side, and current inner loop controls the output current of AC.The three-phase voltage current signal coordinates of input is transformed to synchronous rotary dq coordinate by LED illumination intelligent control system of the present invention, and d shaft current represents active current, and q shaft current represents reactive current.And outer voltage is by detecting the virtual voltage u of DC side
dcand compare rear feeding pi regulator with voltage given value, export as given value of current signal.Dq shaft current after coordinate transform is sent into pi regulator with after given current signal by current inner loop, again through α β coordinate transform, export as modulation signal, produce pwm signal by PWM waveform generation algorithm again and control opening and shutoff of power-switch arm, the final electric current controlling AC.Through three-phase PWM synchronous rectification module, can export as high-quality 570V direct current, and alternating current net side electric current can be realized for sinusoidal wave and power factor is approximately 1, mains by harmonics can be suppressed preferably, realize the two-way flow of electric energy, and rectification control system have dynamic response and good static characteristic faster.
Intelligent power control unit comprises surge protection circuit, EMI filter circuit, auxiliary power module, voltage-limiting current-limiting protection circuit, failure detector circuit, for carrying out the 2nd MCU processor of dynamic light adjustment and light on and off control to LED group unit, for generation of the pwm control circuit of pwm signal and for receiving the communication module of outer needles to LED lamp unit command signal and up-delivering signal, light intensity sensor connects the 2nd MCU processor, for the 2nd MCU processor provides intensity signal, 2nd MCU processor is by the light conditions of multiple light intensity sensor Test Field, compare with the light intensity value preset, if cross bright, the duty ratio then reducing pwm pulse reduces the brightness of LED group unit, otherwise, the duty ratio increasing pwm pulse improves the brightness of LED, finally reach best brightness, LED group unit is made not to be always operating at maximum power state, energy-conserving and environment-protective.Intelligent power control unit of the present invention can be arranged on below the lamp stand of street lamp, is convenient to safeguard.As shown in Figure 4; DC-DCBuck conversion module of the present invention connects the input of surge protection circuit by high voltage dc bus; surge protection circuit connects LED group unit to provide power supply through EMI filter circuit, voltage-limiting current-limiting protection circuit; EMI filter circuit processes electromagnetic interference; with the high-frequency impulse of the extraneous electrical network of filtering to the interference of intelligent power control unit, the output of EMI filter circuit is connected with the input of auxiliary power module.As shown in Figure 10; surge protection circuit of the present invention is connected on the input of intelligent power control unit; comprise protective tube FV, piezo-resistance RV1, RV2, RV3 and Transient Suppression Diode TVS; protective tube FV connects into power output end; be connected across both ends of power after piezo-resistance RV1, RV2 series connection and be connected on protective tube output; be connected across both ends of power after piezo-resistance RV3 is in parallel with Transient Suppression Diode TVS, to prevent lightning induction and surge voltage, damage caused to intelligent power control unit.As shown in Figure 11, pressure-limit current-limit circuit of the present invention comprises resistance R22 ~ R26, triode Q1 and Q2, voltage-stabiliser tube D6 and D7, resistance R22 is connected between input positive pole and the base stage of triode Q1, the base stage of the collector connecting transistor Q1 of triode Q2, the emitter of triode Q2 connects the negative electrode of voltage-stabiliser tube D7, the anode of voltage-stabiliser tube D7 connects input negative pole, voltage-stabiliser tube D6 and resistance R23 is in parallel, and voltage-stabiliser tube D6 negative electrode connects the base stage of triode Q1, voltage-stabiliser tube D6 anode connects output cathode, between the emitter that resistance R24 is connected in parallel on triode Q2 and output cathode, resistance R25 and R26 is connected on after connecting and exports between positive and negative polarities.As shown in Figure 12, failure detector circuit of the present invention is connected with the LED array lamp of LED group unit, the operation conditions of real-time detection LED group unit, comprises electric capacity C7, resistance R15 ~ R18, R21 and constantan wire sampling resistor R19, adjustable resistance R20, sampling resistor R21 and voltage-stabiliser tube D5.Wherein resistance R15, R16 series connection forms voltage collection circuit as divider resistance, resistance R16 is voltage sample resistance, resistance R17, R18 of electric capacity C7 and parallel connection are connected across circuit two ends, adjustable resistance R20 and constantan wire sampling resistor place in circuit in parallel, current sample point is the tie point of the two, and current sample point is by voltage-stabiliser tube D5 and resistance R21 ground connection.Realize sending the fault detection signal of detection to the 2nd MCU processor by the operating voltage and electric current that detect LED group unit.As shown in Figure 4, auxiliary power module of the present invention connects the power end of the 2nd MCU processor and communication module respectively, for the 2nd MCU processor and communication module provide working power, communication module is connected with the communication ends of the 2nd MCU processor, 2nd MCU processor connects the PWM control end of LED group unit by pwm control circuit, judge whether the circuit of LED group unit opens a way by failure detector circuit, short circuit, overvoltage or overcurrent, transfer data to the 2nd MCU processor to process, if there is fault, it is the control signal of zero that 2nd MCU processor controls pwm control circuit output duty cycle, stop the output of constant-current source, protection LED group unit, send fault warning information to control centre by communication module simultaneously, facilitate the maintenance to power control unit and light fixture.The fault-signal etc. of the operation conditions of intelligent power control unit, electric current and voltage and LED group unit is uploaded to the control centre in outside by communication module of the present invention, and equally, external control center sends dimming commands signal to LED group unit.2nd MCU processor of the present invention can select the model identical with a MCU processor.
2nd MCU processor of intelligent power control unit receives the dimming commands signal of control centre by communication module, after D/A conversion, input to pwm control circuit to produce corresponding pwm control signal, this control signal sends the DC-DC constant flow module in LED group unit to.Duty ratio by changing pwm control signal regulates the forward current ON time of DC-DC constant-current source, and then changes the average current of LED array lamp, reaches the effect of brightness adjustment.When intelligent power control unit has detected fault-signal or need to turn off LED group unit, output duty cycle has been the pwm signal of zero, and intelligent power control unit stops exporting, and the electric current flowing through LED group unit is zero.Intelligent power control unit of the present invention and control centre pass through bus communication, master-slave communication mode can be adopted, when control centre sends dimming commands in bus, after each intelligent power control unit receives command information, first judge whether the machine address conforms to the destination address in instruction, if conformed to just perform dimming commands, the each intelligent power control unit of the present invention has independently physical address, therefore, it is possible to realize the light modulation often organizing LED array lamp, the light modulation of different duty can be carried out to each LED array lamp in illuminator, make each paths of LEDs array lamp can export suitable luminous intensity according to actual illumination demand.LED group unit comprises DC-DC constant-current source and LED array lamp, and this DC-DC constant-current source adopts special constant-current chip, and have the advantage that volume is little, low in energy consumption, as shown in Figure 5, LED array lamp of the present invention adopts multiple light-emitting diode D
1nto D
mnin parallel after forming first series connection, at utmost meet the characteristic coherency of LED, improve reliability and life-span, LED group unit adopts an overall package structure, the 400V direct current of intelligent power control unit input exports DC-DC constant-current source to, for LED array lamp provides the constant current of needs, ensures that LED array lamp is operated in constant current state, pwm control signal is passed DC-DC constant-current source simultaneously, realize the light modulation of LED array lamp.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned execution mode, in the ken that one skilled in the relevant art possesses, various change can also be made under the prerequisite not departing from this patent aim.
Claims (10)
1. a LED projector lamp intelligent lighting system, it is characterized in that, comprise the synchronous rectification unit for providing DC power supply at least two intelligent power control units, and provide the light intensity sensor of intensity signal for intelligent power control unit, light intensity sensor electrical connection intelligent power control unit, each intelligent power control unit output is connected with corresponding LED group unit by electric wire, and synchronous rectification unit is connected with each intelligent power control unit by high voltage dc bus.
2. LED projector lamp intelligent lighting system according to claim 1, it is characterized in that, described synchronous rectification unit comprises three-phase PWM synchronous rectification module and DC-DCBuck conversion module, described three-phase PWM synchronous rectification module comprises ac circuit, Intelligent Power Module, DC loop, phase shortage and circuit of testing the phase sequence, the electric current and voltage Acquisition Circuit of AC, control relay circuit, the voltage collection circuit of DC side, the state detection circuit of DC side, for the DSP primary processor of PWM control algolithm, for carrying out MCU processor and a photoelectric isolated driver of protecting control to three-phase PWM synchronous rectification module.
3. LED projector lamp intelligent lighting system according to claim 2, it is characterized in that, described ac circuit comprises the three-phase isolation transformer and three-phase electrical relay that are serially connected in three-phase alternating current, DC loop is made up of the resistance R of parallel connection and electric capacity C, ac circuit connects DC-DCBuck conversion module through Intelligent Power Module and DC loop, the phase shortage and the circuit of testing the phase sequence that are connected to three-phase isolation transformer input connect the input of a MCU processor respectively with the state detection circuit of the voltage collection circuit one end being connected to DC side in DC loop, the output of the one MCU processor is connected with the control end of three-phase electrical relay by control relay circuit.
4. LED projector lamp intelligent lighting system according to claim 3, it is characterized in that, the electric current and voltage Acquisition Circuit being connected to the AC of relay output end and the voltage collection circuit being connected to the DC side in DC loop connect the input of DSP primary processor respectively, the PWM output of DSP primary processor connects the drive end of Intelligent Power Module by photoelectric isolated driver, liquid crystal display is connected with DSP primary processor input respectively by optical coupling isolator with input through keyboard circuit.
5. the LED projector lamp intelligent lighting system according to claim 1 or 2 or 3 or 4; it is characterized in that, described intelligent power control unit comprise surge protection circuit, EMI filter circuit, auxiliary power module, voltage-limiting current-limiting protection circuit, failure detector circuit, for carrying out the 2nd MCU processor that dynamic light adjustment and light on and off control to LED group unit, for generation of the pwm control circuit of pwm signal and for receiving the communication module of outer needles to LED lamp unit command signal and up-delivering signal.
6. LED projector lamp intelligent lighting system according to claim 5, it is characterized in that, DC-DCBuck conversion module connects the input of surge protection circuit by high voltage dc bus, surge protection circuit is through EMI filter circuit, voltage-limiting current-limiting protection circuit connects LED group unit to provide power supply, the failure detector circuit be connected with LED array lamp connects the 2nd MCU processor, the output of EMI filter circuit is connected with the input of auxiliary power module, auxiliary power module connects the power end of the 2nd MCU processor and communication module respectively, 2nd MCU processor connects the PWM control end of LED group unit by pwm control circuit, communication module is connected with the communication ends of the 2nd MCU processor.
7. LED projector lamp intelligent lighting system according to claim 6, is characterized in that, light intensity sensor connects the 2nd MCU processor.
8. LED projector lamp intelligent lighting system according to claim 1, is characterized in that, described LED group unit comprises DC-DC constant-current source and LED array lamp.
9. LED projector lamp intelligent lighting system according to claim 1, it is characterized in that, described ac circuit also has three-phase protective tube and three-phase net side inductance L, three-phase protective tube is connected on the input of three-phase isolation transformer respectively, the input termination three-phase net side inductance L of three-phase electrical relay.
10. LED projector lamp intelligent lighting system according to claim 1, is characterized in that, the electric current and voltage Acquisition Circuit of described AC adopts the bidirectional power simultaneously can the measuring six road signals/electric energy metrical integrated chip with serial line interface.
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| CN106787666A (en) * | 2016-12-30 | 2017-05-31 | 广东美的制冷设备有限公司 | High voltage power supply and its cut-off method and device, household electrical appliance |
| CN109041358A (en) * | 2018-06-06 | 2018-12-18 | 马鞍山明阳通信科技有限公司 | A kind of wireless street lamp micro-base station controller |
| CN109152135A (en) * | 2018-08-24 | 2019-01-04 | 武汉科技大学 | A kind of intelligent illuminating system |
| CN109618449A (en) * | 2018-12-11 | 2019-04-12 | 珠海格力电器股份有限公司 | Direct current driving power supply, light emitting diode lighting device and system and control method |
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