Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The object of the present invention is to provide a kind of vcehicular tunnel distributed lighting system based on wind light mutual complementing; The full use wind energy, the good complementary characteristics of solar energy adopt distributed power supply system that tunnel illumination is provided; It is high stable with power supply to have reliability, the characteristics of being convenient to administer and maintain.
To achieve these goals, the technical scheme of the present invention's employing is:
A kind of vcehicular tunnel distributed lighting system based on wind light mutual complementing; Include the independently small-sized wind and solar hybrid generating system and the Surveillance center that are arranged on each tunnel face; Surveillance center couples together small-sized wind and solar hybrid generating system to carry out centralized monitor through wireless network; Surveillance center is connected through the Internet network with the maintenance station, when breaking down, can send to the maintenance station and realize maintenance in time.
Described independently small-sized wind and solar hybrid generating system includes master controller, wind-powered electricity generation module, photovoltaic module; Energy-storage module; Tunnel illumination controller and the unidirectional module that is incorporated into the power networks are formed, and the output of wind-powered electricity generation module, photovoltaic module, energy-storage module and the unidirectional module that is incorporated into the power networks is direct current, and its output all is parallel on the dc bus; Dc bus connects the tunnel illumination controller, is the LED illuminalive power-supply; Master controller to the electric current and voltage data collection and analysis after; The opening and turn-offing of the current supply circuit of driving power switch controlled wind-powered electricity generation module, photovoltaic module, energy-storage module and the unidirectional module that is incorporated into the power networks, master controller carries out communication through serial communication module and small-sized wind and solar hybrid generating system.
Described photovoltaic module is made up of photovoltaic cell group and DC/DC converter, and the photovoltaic cell group links to each other with the input of DC/DC converter, and the output of DC/DC converter inserts dc bus, is the power supply of LED illuminating lamp.Control end through PWM control DC/DC converter is realized Power Conversion and adjusting, is LED illumination steady electricity supply.
Described wind-powered electricity generation module is by wind-driven generator, rectifying device, and the DC/DC transducer is formed, i.e. miniature wind power generation system.Wind-driven generator is output as three-phase alternating current; Its three-phase terminal a, b, c are linked to each other with rectifying device respectively, are direct current energy with wind energy transformation, and its dc output end links to each other with DC/DC transducer input; The output of DC/DC transducer is parallelly connected with dc bus, is the power supply of LED illuminating lamp; Photovoltaic array links to each other with the input of DC/DC converter, and the output of DC/DC converter inserts dc bus, is the power supply of LED illuminating lamp; Storage battery links to each other with direct current DC bus; Control end through PWM control DC/DC transducer is realized Power Conversion and adjusting, is LED illumination steady electricity supply.
Described master controller is the core in the whole generating system, adopts DSP2000 family chip TMS320F2812, realizes the output current voltage to solar cell through its 2 * 8 road A/D conversion through connecting the current/voltage transducer; The output current of wind power generation, the information gathering of battery current and dc bus current, the universal I/O port of master controller is that the GPIOA mouth is one 16 an IO mouth; GPIOA6 wherein; GPIOA7 is used for the PWM generator pin, therefore remains 14 IO pins and can connect 14 power switch pipes of driving, and switching tube is connected in series to the wind-powered electricity generation module respectively; Photovoltaic module; Corresponding current supply circuit is opened or turn-offed to the current supply circuit of energy-storage module and unidirectional these 4 supply modules of module that are incorporated into the power networks through the power controlling switching tube, reaches the purpose of steady load power supply.
PWM generator in the described master controller adopts timer T1PWM generator and T2PWM generator; Its output pin is GPIOA6, GPIOA7; Output pin GPIOA6 links to each other with the wind-powered electricity generation module through the control end of DC/DC transducer, and output pin GPIOA7 links to each other with photovoltaic module through the control end of DC/DC converter.
With 16 universal I/O port B of master controller is that GPIOB is that IOPD is connected LCD liquid crystal display LCD12864 with 4 universal I/O port D; Accomplish its operating state (wind power supply, photovoltaic power supply or mains supply), battery information; Deng demonstration, conveniently carry out trouble hunting.The RS232 serial ports of master controller links to each other with Surveillance center through RS232 commentaries on classics GPRS module and realizes the wireless telecommunications of distributed wind light mutual complementing illuminator and Surveillance center.
Described tunnel illumination controller adopts 80C51 as microcontroller; Its universal I/O port P0 is linked to each other with the A/D chip with the P1 mouth; Gather the output voltage of bright transducer through the A/D converter, microcontroller links to each other with PLC through serial ports then, according to detected environmental light brightness; Microcontroller is realized the flexible light in the tunnel through the opening and closing of each lighting loop of IO point control of PLC.
Described energy-storage module is meant storage battery, and storage battery is parallel on the dc bus, and the power controlling switching tube is opened or closed its charging and discharging circuit.
The described unidirectional module that is incorporated into the power networks is meant and converts single-phase line voltage into direct voltage through rectifying device that electric energy is parallelly connected with dc bus in support.
The advantage of invention is:
1) adopt small-sized wind light mutual complementing illuminator full use wind energy, solar energy natural energy resources to realize the tunnel illumination power supply, energy-conservation, economy, environmental protection.
2) adopt the unidirectional module that is incorporated into the power networks to need not three-phase grid; Only when wind light mutual complementing power generation and storage battery power supply deficiency, adopt mains supply; Can remedy the deficiency of big electrical network aspect security and stability like this; Effectively reduced system cost, alleviated the load of electrical network simultaneously, this locality load electricity consumption has been played the effect of flat peak load.
3) adopt distributed power supply to guarantee that the illumination between each tunnel is separate, easy to maintenance, save electric wire, be fit to each regional popularizing and use.
4) if remote and electrical network wiring inconvenient areas for some too high with the electrical network power supply cost, adopt distributed power supply then can make things convenient for independence.Reduced Financial cost widely.
5) application of LEDs lighting apparatus improves light efficiency, reduces energy consumption, increases useful life, reduces the system maintenance cost.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present invention and operation principle are done further explain.
Referring to Fig. 1; A kind of vcehicular tunnel distributed lighting system based on wind light mutual complementing; Be independently small-sized wind light mutual complementingilluminator 1 of each tunnel configuration; Independently small-sized wind and solarhybrid generating system 1 is connected to monitoringsystem center 2 through the GPRS wireless network, andmonitoring system center 2 links to each other with the maintenance station through the Internet network again.
Its middle-size and small-size wind light mutual complementingilluminator 1 is the stable DC electric energy with wind energy, solar energy converting, is the power supply of LED tunnelillumination.Surveillance center 2 carries out wireless telecommunications with the master controller of the small-sized wind and solarhybrid generating system 1 in each tunnel, and master controller adopts TMS320F2812, and meeting a RS232 at the RS232 of master controller serial ports changes the GPRS module.So just can be implemented in line and observe the working condition of each wind light mutual complementing illuminator, and when indivedual wind light mutual complementing illuminators break down, send maintenance signal, carry out on-call maintenance to the maintenance station.
Referring to Fig. 2;Master controller 3 links to each other withSurveillance center 2;Master controller 3 links to each other with wind-poweredelectricity generation module 6,photovoltaic module 7, energy-storage module 8 and theunidirectional module 5 that is incorporated into the power networks respectively, and wind-poweredelectricity generation module 6,photovoltaic module 7, energy-storage module 8 and the unidirectional output that is incorporated into thepower networks module 5 are direct current, all are parallel on the dc bus; Dc bus directly connects the power input oftunnel illumination controller 9; The IO point oftunnel illumination controller 9 connects LEDilluminating lamp 10, through the control of the software programming in thecontroller 9 LED illumination, realizes illumination intensity control.
Wherein photovoltaic module is made up ofphotovoltaic array 13 and DC/DC converter 15, and its effect is to be electric energy throughphotovoltaic array 13 with conversion of solar energy, carries out Power Conversion and adjusting through DC/DC converter 15 and reaches the required constant voltage of LED illuminating lamp 10.The wind-powered electricity generation module is by wind-drivengenerator 17, and rectifier, DC/DC transducer 18 are formed, and its effect is to be electric energy through wind-drivengenerator 17 with wind energy transformation, carries out Power Conversion through DC/DC converter 16 and reaches the required constant voltage ofLED illuminating lamp 10 with regulating.Energy-storage module 8 adoptsstorage battery 11 to accomplish the energy storage task, and its effect is when the wind light generation power devices is superfluous, exports constant busbar voltage, and charges a battery, and when the wind light generation power devices was not enough, then storage battery released energy, for illumination provides electric power.Theunidirectional module 5 that is incorporated into the power networks is stable DC bus-bar voltage through the rectification step-down with single-phase electrical network voltage transitions; Its effect is when preventing continuously overcast and rainy calm weather; Battery power is crossed when hanging down; Then convert the AC energy of electrical network into direct current energy by electrical network through the single-phase rectifier device and power to the load then, the DC bus-bar voltage of systems stabilisation guarantees normal illumination.Dc bus is through the 9control LED illuminations 10 of tunnel illumination controller.
Referring to Fig. 3; Fig. 3 is the particular circuit configurations figure of small-sized wind light mutual complementingilluminator 1, and wind-drivengenerator 17 is output as three-phase alternating current, and its three-phase terminal a, b, c are linked to each other with rectifyingdevice 16 respectively; Be direct current energy with wind energy transformation like this; Its dc output end links to each other with DC/DC transducer 18 inputs, and the output of DC/DC transducer 18 is parallelly connected with dc bus, is 10 power supplies of LED illuminating lamp.Demand according to the electric power ofLED illuminating lamp 10 realizes Power Conversion and adjusting through the control end of computed in software PWM duty ratio control DC/DC transducer 18, thereby reaches the purpose of steady electricity supply.
Photovoltaic array 13 is output as direct current, and the input terminal of DC/DC converter 15 is received in its output, and the output of DC/DC converter 15 inserts dc bus, is 10 power supplies of LED illuminating lamp.Its effect is to convert solar energy into electric energy, and the demand according to the electric power ofLED illuminating lamp 10 realizes Power Conversion and adjusting through the control end of computed in software PWM duty ratio control DC/DC converter 15 then, thereby reaches the purpose of steady electricity supply.
Storage battery 11 links to each other with direct current DC bus, stores wind power generation and the unnecessary electric energy of photovoltaic generation, connects this current supply circuit through the drive circuit of the correspondingpower switch pipe 25 of the GPIOA mouth pin driving ofmaster controller 3 and can realize opening or turn-offing charging and discharging circuit; Its effect is when the wind light generation power devices is superfluous; Export constant busbar voltage, andaccumulators 11 chargings, when the wind light generation power devices is not enough; Release energy bystorage battery 11, electric consumption on lighting is provided.
Unidirectional line voltage converts DC bus-bar voltage into through rectification step-down 19, is not having under the situation of enough supplies of electric power to 10 power supplies of LED illuminating lamp.Connect these current supply circuits through the corresponding power switchtube drives circuit 25 of the GPIOA mouth pin driving ofmaster controller 3 and can realize mains supply; Wherein power switch pipe adopts the MOSFET model; Mainly be to prevent under the situation that overcast and rainy calm weather andstorage battery 11 electric power are low excessively continuously, can guarantee normal illumination.
It is that the LED illuminating lamp is supplied power thatmaster controller 3 utilizes universal I/O port to control wind-powered electricity generation module, photovoltaic module, tunnel illumination controller, energy-storage module and the unidirectional module that is incorporated into the power networks respectively through the driving circuit drives power switch pipe; Master controller is mainly gathered the output current of DC/DC converter 15 in wind-drivengenerator 17 output currents in the wind-poweredelectricity generation module 6, DC/DC transducer 18 output currents, the photovoltaic module through the electric current and voltage data acquisition circuit; The electric current ofstorage battery 11 in the energy-storage module 8; The electric current and voltage information and the DC bus-bar voltage electric current of rectification step-down 19 outputs in theunidirectional module 5 that is incorporated into the power networks; Control the opening and turn-offing of current supply circuit that universal I/O port connectspower switch pipe 25 these several modules of control then throughmaster controller 3 in house software analyses, thereby realize the co-ordination between them.In the wind-powered electricity generation module, also have off-load 20 control loops; Detect various electric current and voltage information according to above-mentioned; Judge whether the electric energy that wind-driven generator sends surpasses accumulators store amount and electric consumption on lighting amount; If surpass then the drive circuit of power controllingswitching tube 25 is opened the off-load control loop, discharge unnecessary electricenergy.Master controller 3 carries out communication through serial communication module andSurveillance center 2 in addition.
Referring to Fig. 4; Connection layout for master controller of the present invention; Master controller links to each other through IOPA0-IOPA5 mouth and charging and discharging circuit, solar powered, photovoltaic power supply, mains supply; The drive circuit of thepower switch pipe 25 of charging and discharging circuit, solar powered, photovoltaic power supply, mains supply links to each other; The IOPA6 mouth of master controller links to each other with wind-poweredelectricity generation module 6 throughLoad Control loop 20, and wind-poweredelectricity generation module 6 links to each other with the A/D conversion ofmaster controller 3 through wind-powered electricity generationcurrent detection circuit 24, also is connected with photovoltaiccurrent detection circuit 23 in the A/D conversion ofmaster controller 3; Photovoltaiccurrent detection circuit 23 links to each other withphotovoltaic module 7; Wind-poweredelectricity generation module 6 also links to each other with the PWM generator ofmaster controller 3 through DC/DC transducer 18, and energy-storage module 8 links to each other with the A/D conversion ofmaster controller 3 through charging and dischargingcurrents testing circuit 22,voltage detecting circuit 21 respectively, andphotovoltaic module 7 links to each other with the PWM generator ofmaster controller 3 through DC/DC converter 15; The serial ports output ofmaster controller 3 changes GPRS through RS232 and links to each other withSurveillance center 2, and two IO mouths of the IOPD ofmaster controller 3 and GPIOB are connected withLCD 14.
Describedmaster controller 3 is cores of the complementary illuminator of whole spectral; Its major function is the wind-powered electricity generation module to collecting; The voltage of photovoltaic module and energy-storage module, current information are analyzed, and judge the ruuning situation of this system; Be that GPIO opens accordingly or turn-offs each loop through software control algorithm control universal I/O port then, thereby realize the co-ordination between them.Simultaneously system's input and output electric weight is played and regulate and distributional effects, and realize system-level management, man-machine interaction (charge and discharge indicator light, LCDs), network communication function.
Master controller 3 adopts DSP2000 family chip TMS320F2812 to realize.Gather from its A/D below, the control of GPIO mouth, PWM control, LCD shows that five aspects of RS232 serial communication are explained.
A/D gathers:master controller 3 carries 2 * 8 road A/D conversion; Just can realize output current voltage, the information gathering of the output current of wind-drivengenerator 15,storage battery 11 electric currents, unidirectional be incorporated into thepower networks module 5 voltages and dc bus current voltage through connecting the current/voltage transducer tophotovoltaic array 13.
Referring to Fig. 5; Voltage collection circuit is shown in Fig. 5 (a); Adopt special-purpose current sensor CHB-25NP and voltage sensor CHV-25P to gather, wherein Fig. 5 (a) is the voltage detecting circuit figure among Fig. 4, wherein+HT and-be tested voltage signal between the HT; Output converts current signal into voltage signal through R1, is linked into the A/D conversion chip of DSP then; Fig. 5 (b) is wind-powered electricity generation module testing circuit and the photovoltaic current detection circuit figure among Fig. 4; Current sensor is connected on the lead of each tested electric current; The current signal measured through electromagnetic induction becomes 0-3V voltage through M end R3, receives the A/D conversion chip ofmaster controller 3.
GPIO control: the universal I/O port A mouth ofmaster controller 3 is IO mouths of one 16; GPIOA6 wherein; GPIOA7 is used for the PWM pin, therefore remain 14 IO pins and can connect 14 power switchtube drives circuit 25 of driving, and power switch pipe is connected in series to wind-poweredelectricity generation module 6 respectively;Photovoltaic module 7; Corresponding current supply circuit is opened or turn-offed to the current supply circuit of energy-storage module 8 andunidirectional module 5 these 4 supply modules that are incorporated into the power networks through power controlling switchingtube drive circuit 25, reaches the purpose of steady load power supply.
Referring to Fig. 6, Fig. 6 is the off-load control loop, and off-load control is when wind power generation surpasses the limit value that sets, and opens or turn-off the off-load control loop through power controlling switchingtube drive circuit 25, and the consumption of being accomplished excess energy by high-power resistance absorbs.
PWM control:master controller 3 inside have PWM generator; PWM generator adopts timer T1PWM generator and T2PWM generator; Output pin GPIOA6 links to each other with wind-poweredelectricity generation module 6 through the control end of DC/DC transducer 18, and output pin GPIOA7 links to each other withphotovoltaic module 7 through the control end of DC/DC converter 15, according to detected wind energy; Solar energy and load variations situation; Regulate the PWM duty ratio through software setting and control algolithm, promptly regulate the voltage of the control terminal of DC/DC transducer 18, DC/DC converter 15, realize maximal power tracing control.
Illustrate control procedure below: when unglazed, detected current information Is is 0 if any wind, and close photovoltaic power supply loop through the drive circuit of the corresponding position power controllingswitching tube 25 of IOPA mouth this moment; If wind power generation power P w during greater than bearing power Pl, then opens charge circuit and charges a battery, surpass set point Pb greatly when detecting wind power generation power; Then open relief circuit, accomplish off-load control, if Pw is during less than Pl; Then open the storage battery power supply loop, the steady load power supply.
LCD shows: be GPIOB being IOPD with 4 universal I/O port D mouths with 16 universal I/O port B mouths ofmaster controller 3 links to each other with 20 LCD liquid crystal display LCD12864; Through the demonstration of coding completion its operating state (wind power supply, photovoltaic power supply or mains supply etc.), battery information etc., conveniently carry out trouble hunting.
The RS232 serial communication: the RS232 COM ofmaster controller 3 links to each other with Surveillancecenter 2 through RS232 commentaries on classics GPRS and realizes the wireless telecommunications of distributed wind light mutual complementingilluminator 1 andSurveillance center 2.
Referring to Fig. 7, described tunnel illumination controller is used for regulating the bright-dark degree of tunnel illumination.Its annexation is: the tunnel illumination controller can adopt 80C51 as microcontroller; The universal I/O port P0 of microcontroller is linked to each other with A/D with the P1 mouth; Gather the output voltage of bright transducer through the A/D converter, microcontroller links to each other with PLC through serial ports, according to detected environmental light brightness; The output IO point of microcontroller through PLC directly controlled the opening and closing of each lighting loop, the flexible light in the realization tunnel.Be in bright sensor in the tunnel after brightness, the output signal is passed to microcontroller after through the A/D conversion, and microcontroller controls corresponding lighting loop according to the tunnel illumination control strategy through PLC and opens or cut out, and realizes the flexible light in the tunnel.
LED tunnel illumination equipment: divide section to calculate the LED illuminating lamp that uses different capacity according to the tunnel.
The technology implementation scheme that electricity generation module is concrete:
Wind and solar hybrid generating system mainly is for the tunnel illumination power supply, adopts the LED tunnel illumination, by whole day power maximum value calculation, supposes that the whole day maximum power dissipation is E.Suppose that equipment installation region solar energy average effective utilizes the time to be 4h every day, the wind energy average effective utilizes the time to be 5h every day, and calm unglazedly do not have the available light source worst case continuous 5 days yet.
Described wind power generation module, wind power generation minimum power are E/5h, consider the system loss and the error rate of wind power generation component devices, get safety factor 1.4.Taking all factors into consideration least must be because of mutually, and the power of wind-driven generator should be
Ee=E×1.4×5/5h
Choose suitable wind-driven generator and DC/DC modular converter according to result of calculation.
Described solar energy scheme: solar panel minimum power E/4h=66.25w considers the system loss and the attenuation rate of solar components equipment, gets safety factor 1.4, takes all factors into consideration the least favorable factor, and the power of solar panel should be
Es=E×1.4×5/4
Choose suitable solar panel and corresponding DC/DC modular converter according to result of calculation.
Described electric energy storage device: for guaranteeing the situation in no available wind and no available light energy, system at least can continous-stable work 5 days, according to power consumption equipment group whole day power consumption and rated voltage, can know that system's average current does
Is=E/(24×24v)
Consider the discharging efficiency and the attenuation rate of storage battery, get safety factor 3.5.Take all factors into consideration the least favorable factor, the rated capacity of storage battery just does
Ei=Is×3.5×24?×5。
Choose the set of currents of holding of suitable rated capacity according to result of calculation.