CN103269546B - A kind of LED street lamp intelligent control and method thereof - Google Patents
A kind of LED street lamp intelligent control and method thereof Download PDFInfo
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Abstract
The invention discloses a kind of LED street lamp intelligent control, it comprises: parameter sensors, and it is for gathering the relevant parameter of LED street lamp; LED driver switching circuit, it is for controlling according to processor command the power supply that LED driver opens or closes LED street lamp; LED driver light adjusting circuit, it is for when LED streetlamp power source is opened, and regulates brightness value to control the brightness of LED driver adjustment LED street lamp according to the LED street lamp received from processor; LED driver, it is for the instruction according to LED driver switching circuit and LED driver light adjusting circuit, directly controls LED lamp panel and carries out corresponding action; Processor, it is for the on off state of relevant parameter determination LED street lamp that collects according to described parameter sensors and regulate brightness value, and by the on off state determined and regulate brightness value to be sent to LED driver switching circuit and LED driver light adjusting circuit.
Description
Technical field
The present invention relates to the control field of LED street lamp, particularly relate to a kind of intelligent control system and method thereof of LED street lamp.
Background technology
Along with the development of society; energy problem is own through becoming one of global problem paid close attention to the most; energy crisis is own through becoming the main crisis that the whole mankind faces; particularly the electric power energy of China seems in recent years and is extremely critical; power tense hampers our daily production, life, even badly influences the progress of China's expanding economy and social civilization.And in the overall electricity consumption of China, electric consumption on lighting occupies again very large ratio.City street lamp is part important in modern urban construction, and it serves the production of traffic safety and people, raw words, having beautified city appearance, having played a part very important for creating good investment environment.The lighting quality meeting visual performance be ensure traffic safety, social security, people are engaged in the conditio sune qua nons such as production and recreation.Along with the fast development of China's economy, the quantity of illuminating street lamp gets more and more, and its power consumption accounts for the ratio of the total electricity consumption in city also in continuous increase.Show according to statistics, China consumes the electricity charge more than 1,000 hundred million yuan every year in street lighting, and its development speed is very surprising.City lighting, beautify spring tide trend under, our electric power resource is also engulfed in landscape light in city power consumption.And electricity power enterprise invests and build needs one the longer cycle, economic development fast needs more more sufficient supplies of electric power and consumption, full of contradictions between the supply and demand of electric power.Supply of electric power breach is difficult to be alleviated in a short time, and development and saving are laid equal stress on, and oneself is through becoming the inevitable choice of economic construction.Now, lighting industry is economized on electricity and is also become our inevitable choice.
It is traditional high-pressure sodium lamp that the light source that current street lighting uses mainly contains two kinds: one, and one is the energy-saving LED road lamp that country compares promotion, and usage quantity is little.LED (Light Emitting Diode, light-emitting diode), there is the many merits such as volume is little, little power consumption, the life-span is long, reliability is high, fast response time, driving voltage are low, just will progressively replace the conventional lighting technology such as incandescent lamp and fluorescent lamp, be applied to the fields such as major urban arterial highway, city subsidiary road, industrial park road, urban and suburban roads.
Energy-conservation, be efficiently the synonym of LED street lamp, National Development and Reform Committee proposes, and progressively will eliminate incandescent lamp in 5 years, development LED green illumination.Nanjing in 2010 once pilot all make the street lamp on a road into LED electricity-saving lamp, but try out more than a year, the ideal of effect but not expection.In August, 2010, the high-pressure sodium lamp of both sides, Liberation Road, Nanjing is all replaced by LED by road lamp management place, Nanjing first extensive pilot.On the road of Liberation Road total length 3 kilometers, device LED street lamp 170, but pilot is got off more than a year, effect is but and not as people's will.According to the useful life of presetting, LED saves street lamp at least can with more than 5 years, but in fact less than in the time of 2 years, the driver of the LED street lamp that Liberation Road is all along the line all maintain and replaces.Poor stability, price, later period maintenance are costly.
As can be seen here, regulating the condition of work of LED street lamp, is very important problem to improve its useful life.
The wireless intelligent LED streetlamp control system proposed in prior art, it comprises road lamp management centring system and Zigbee wireless sensing control system; In Zigbee wireless sensing control system, each LED street lamp is provided with wireless road lamp intelligent controller, networking is carried out by Zigbee node Ad Hoc network network between wireless road lamp intelligent controller and wireless road lamp intelligent controller, each wireless road lamp intelligent controller has a network address unique on network, and wireless road lamp intelligent controller adds network after the power-up automatically; Road lamp management centring system comprises monitoring PC and server, and road lamp management centring system is connected with the wireless road lamp intelligent controller network in Zigbee wireless sensing control system by public network; By the long-distance intelligent control to street lamp, realize the illumination as required of road, save the energy; Simultaneously by the collection to street lamp information, the operating state of street lamp can be monitored in real time, and the fault of street lamp is detected, positioning analysis.
But in this implementation, the intelligent wireless controller in every LED street lamp only realizes single networking function, and information is uploaded to administrative center by network, and self does not analyze arbitration functions, the control of street lamp is placed one's entire reliance upon network.Can not promptly and accurately control street lamp when network failure.
Another the high-power LED street lamp intelligent management control device proposed in prior art, it includes control device box body, described control device box body offers respectively the primary input port for civil power input and the main output port for being connected high-power LED street lamp, be characterized in: input port is connected with driver module, the output of driver module connects main output.The primary input end of driver module is connected with intelligent switching control module.The control end of intelligent switching control module is connected to time control module, induction control module, long-distance intelligent control module.Thus, the basis of the switch control rule that routinizes of road lamp power supply increasing intelligent switch and controls, reducing energy waste to greatest extent when not affecting use.Meanwhile, high-power LED street lamp can be allowed to carry out best illumination according to the actual state of road environment.
But, although this implementation has all kinds of control module, the basis of the switch control rule that routinizes of road lamp power supply adds intelligent switch and controls, decrease the waste of the energy.But do not consider the life curve formula of LED street lamp, likely make LED street lamp work long hours under big current and high heat, or carry out light on and off control frequently, these all seriously can reduce the useful life of LED.Therefore the program can not take into account the object extending street lamp useful life while reaching saves energy.
Although LED is energy-conservation, but it is the same with general incandescent light fitting, part energy is converted into other part energy in the process of light and changes into heat, especially LED is point-like illuminating source, its heat produced also concentrates in minimum region, if the heat produced cannot distribute in time, the junction temperature of PE knot will raise, speed-up chip and potting resin aging, also may cause solder joint to melt, make chip failure, and then the useful life directly affecting LED shows with luminous, especially great power LED, its caloric value is larger, requires higher to heat dissipation technology.
Although a lot of LED product indicates that luminescent lifetime is more than 100,000 hours, but do not seem in current practical application and have the so long life-span, reason is exactly that LED exists light decay problem, once LED luminosity drops to less than 30% of original luminance, just thinks that it is unavailable.The reason causing LED light to decline mainly contains: a. temperature is too high to be caused.The light decay of LED street lamp is relevant with its junction temperature, and so-called junction temperature is exactly the temperature of semiconductor PN, and junction temperature is more high more early occurs light decay, and namely the life-span is shorter.If as can be seen from the LED street lamp life curve formula of certain producer, junction temperature is 105 degree, the life-span that brightness is down to 70% only has more than 10,000 hour, 95 degree just have 20,000 hours, and junction temperature is reduced to 75 degree, the life-span just has 50,000 hours, more can extend to 90,000 hours when 65 degree.So the key extending the street lamp life-span will reduce junction temperature exactly.The light of b.LED chip itself subtracts the light decay caused with fluorescent material.Most of White LED street lamp irradiates yellow fluorescent powder by blue led and obtains.The main cause causing LED street lamp high-power lamp pearly-lustre to decline has two, and one is the light decay of blue LED lamp pearl itself, and the light decay of blue LED lamp pearl wants fast more than the light decay of ruddiness, gold-tinted, green light LED lamp pearl.One is the light decay of fluorescent material in addition, and fluorescent material decay is at high temperature also very serious.C. the light decay that in encapsulation, insulating cement, fluorescent glue cause.LED high temperature can cause the performance of insulating cement and fluorescent glue to reduce, thus affects the luminous flux of light fixture output.D.LED support is on the impact of light decay, and LED support has copper stent and retort stand, and the thermal conductivity of copper and iron is different, copper good heat conductivity, can lower the temperature to light fixture faster, less on the impact of light decay.
As can be seen from the above analysis, when street lamp material is determined, affect the working temperature that LED street lamp life-span topmost factor is street lamp, and the working temperature of street lamp and street lamp operating time, the electric current that applies voltage thereon and flow through street lamp are closely bound up.
Summary of the invention
For useful life of existing LED street lamp far below problems such as designed lives, the present invention proposes a kind of LED street lamp intelligent control and control method thereof, from temperature, voltage, electric current etc. are many-sided, street lamp operating state is monitored, there is the analyzing and processing ability of data simultaneously, can be processed these data by algorithm preset in advance in processor, draw the optimum Working of this street lamp.
LED street lamp intelligent control disclosed by the invention, it comprises:
Parameter sensors, it is for gathering the relevant parameter of LED street lamp;
LED driver switching circuit, it is for controlling according to processor command the power supply that LED driver opens or closes LED street lamp;
LED driver light adjusting circuit, it is for when LED streetlamp power source is opened, and regulates brightness value to control the brightness of LED driver adjustment LED street lamp according to the LED street lamp received from processor;
LED driver, it is for the instruction according to LED driver switching circuit and LED driver light adjusting circuit, directly controls LED lamp panel and carries out corresponding action;
Processor, it is for the on off state of relevant parameter determination LED street lamp that collects according to described parameter sensors and regulate brightness value, and by the on off state determined and regulate brightness value to be sent to LED driver switching circuit and LED driver light adjusting circuit.
The intelligent control method of LED street lamp disclosed by the invention, it comprises:
Step 1, ambient brightness is divided into different brackets, the LED street lamp that the ambient brightness of different brackets is corresponding different regulates brightness value;
Step 2, gather the ambient brightness of LED street lamp position by luminance sensor;
Step 3, judge whether it is greater than predetermined ambient brightness threshold value according to collected ambient brightness, if then close LED street lamp, and return step 2 and continue to perform; If not, then next step is performed;
Step 4, determine the ambient light levels of its correspondence according to described ambient brightness, and gather the voltage and current of LED street lamp lamp plate temperature and LED street lamp by temperature sensor, voltage sensor and current sensor;
Step 5, judge whether the corresponding data of above-mentioned three transducer collections is all less than the respective threshold preset, if be all less than, then regulate the brightness of described LED street lamp according to the adjustment brightness value of LED street lamp corresponding to determined ambient light levels;
The respective threshold preset described in if the corresponding data of at least one transducer collection of step 6 is greater than, then determine the adjustment brightness value of described LED street lamp according to the life curve formula of the voltage of determined current environment brightness degree, described LED street lamp lamp plate temperature, LED street lamp, electric current and LED street lamp, and regulate the brightness of described LED street lamp according to the adjustment brightness value of determined LED street lamp.
Said system disclosed by the invention and method, make LED street lamp under producer's curve equation designed life instructs, according to the brightness of LED street lamp lamp plate temperature, the single street lamp of surrounding environment automatic brightness adjustment, reach in the object ensureing to extend LED street lamp useful life under the prerequisite of illuminating effect.Also is furnished with communication module in LED street lamp intelligent control simultaneously, only regulate self can not realize reduce energy consumption, lamp condition parameter can be uploaded to outside Surveillance center when improving the object in useful life, it is asked to coordinate the running parameter of adjacent street lamp, complement each other, realize street lamp optimization work on whole section.
Above-mentioned LED street lamp intelligent control disclosed by the invention is under this locality can realize meeting the condition that LED street lamp normally works, and realize the optimization of street lamp life-span, energy consumption and brightness three, reaction speed is fast.Controller inside also comprises communication module, according to certain communication protocol, the working condition of every street lamp and residing environmental condition can be uploaded to Surveillance center, realize the comprehensively monitoring of whole system.Especially severe in LED street lamp condition of work, or LED street lamp abnormal state, when local adjustment can not realize optimization object, can regulate by Surveillance center is unified, carry out cooperation control to the running parameter of its adjacent street lamp, while reducing energy consumption, in the street lamp life-span in balanced whole section, realize the optimization of whole system, alleviate maintain and replace workload, use manpower and material resources sparingly.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of LED street lamp intelligent control in the present invention;
Fig. 2 is the control method flow chart of LED street lamp intelligent control in the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in further detail.
The invention discloses a kind of LED street lamp intelligent control.
Fig. 1 shows the structured flowchart of LED street lamp intelligent control in the present invention.As shown in Figure 1, this LED street lamp intelligent control comprises: MCU processor, communication module, voltage sensor, current sensor, luminance sensor, temperature sensor, LED driver switching circuit, LED driver light adjusting circuit and LED driver.
The nucleus module of this LED street lamp intelligent control is MCU processor, this processor directly connects described voltage sensor, current sensor, luminance sensor and temperature sensor, these transducers are used for all kinds of parameters when gathering street lamp work, and gathered all kinds of parameters are supplied to described MCU processor carry out analytic operation.Wherein, described voltage sensor measurement is applied to the voltage at LED street lamp two ends, current sensor is used for measuring the electric current flowing through LED street lamp, luminance sensor is used for measuring the ambient brightness around this street lamp present position, thus determine whether to need to open this street lamp and street lamp needs to be adjusted to which brightness value, temperature sensor is directly contained in LED lamp panel, is used for the real time temperature of the LED lamp panel measuring this street lamp, to determine the electric current the need of reducing to flow through street lamp, and then reduce heating.
This MCU processor also connects described LED driver switching circuit and LED driver light adjusting circuit, processor exports different control signals, can carry out the different operation such as switch or light modulation by LED driver switching circuit and LED driver light adjusting circuit regulating and controlling LED driver, and then opening of control LED lamp panel is closed and brightness regulation.
LED driver switching circuit and LED driver light adjusting circuit are all operate LED driver, LED driver is then directly control LED lamp panel to carry out corresponding action, difference is the power supply that LED driver switching circuit controls that LED lamp panel is opened or closed to LED driver, and LED driver light adjusting circuit controls the brightness of LED driver to LED lamp panel to regulate when LED lamp panel power supply opening, not effect when LED street lamp lamp plate power-off.
Whether the ambient brightness determination current environment brightness that first described MCU processor collects according to described luminance sensor exceedes the ambient brightness threshold value of turning on light preset, if exceeded, then control by described LED driver switching circuit the power supply that LED driver closes described LED street lamp, if be no more than, determine current environment brightness degree, wherein said ambient brightness is divided into different brackets, and one of the equal corresponding LED street lamp of each ambient light levels regulates brightness value, described MCU processor is after determining current environment brightness degree, control described temperature sensor, voltage sensor and current sensor gather corresponding data, and judge whether the corresponding data that above-mentioned three transducers collect all exceedes the respective threshold preset, if one of them corresponding data exceedes the respective threshold preset, optimization algorithm is then utilized to be optimized calculating, namely according to determined current environment brightness degree, described LED street lamp lamp plate temperature, the voltage of LED street lamp, the life curve formula of electric current and LED street lamp is optimized, under the prerequisite of life-span maximum guaranteeing described LED street lamp, obtain best adjustment brightness, and control by LED driver light adjusting circuit the brightness that LED driver regulates LED street lamp lamp plate.If during the respective threshold preset described in the corresponding data that described three transducers collect all is less than, then the direct LED street lamp adjustment brightness of brightness corresponding to current environment brightness degree being controlled LED driver adjustment LED street lamp lamp plate by LED driver light adjusting circuit.
The described communication module that described control system inside comprises, can according to certain communication protocol, all kinds of parameter during the street lamp work working condition of every street lamp and residing environmental condition collected by described voltage sensor, current sensor, luminance sensor and temperature sensor and the only network numbering of this street lamp upload to outside Surveillance center, realize the comprehensively monitoring of whole system.
The invention also discloses the control method of described LED street lamp intelligent control.
Fig. 2 shows the control method flow chart of described LED street lamp intelligent control disclosed by the invention.As shown in Figure 2, in this control method, set the luminance threshold not needing to turn on light, and will need the ambient brightness classification of turning on light, of the equal corresponding LED street lamp of different ambient light levels is best regulates brightness value; Then electric current and voltage threshold value is set according to the nominal operational parameters of LED street lamp, and according to the LED street lamp life curve formula set temperature threshold value (the LED street lamp life curve formula of different manufacturers different model is all different) that producer provides.Parameter and threshold value start circle collection data after all setting, and judge, control LED street lamp carry out corresponding action according to judged result.Idiographic flow is as follows:
Step 1, ambient brightness is divided into N number of grade, for different LED street lamp, N equals the brightness degree number that this LED street lamp can regulate;
Step 2, gather the ambient brightness parameter of LED street lamp position by luminance sensor;
The ambient brightness parameter that step 3, basis collect judges whether ambient brightness is greater than ambient brightness threshold value, if then close street lamp, and returns step 2 continuation execution; If not, then next step is performed;
Step 4, determine the ambient light levels of its correspondence according to described ambient brightness parameter, and gather the temperature of LED street lamp lamp plate and the voltage and current of LED street lamp by temperature sensor, voltage sensor and current sensor;
Step 5, judge whether the corresponding data of above-mentioned three transducer collections is all less than the threshold value preset, if be all less than, then illustrate that street lamp operating state is good, directly regulate the brightness of described LED street lamp according to the adjustment brightness value of LED street lamp corresponding to determined ambient light levels;
If step 6 has the corresponding data of at least one transducer collection to be greater than threshold value, if the life-span can shorten when then illustrating that LED street lamp is operated in adjustment brightness value corresponding to described ambient light levels, now need to enter optimal method and obtain best adjustment brightness value, and regulate the brightness of described LED street lamp according to the adjustment brightness value of determined LED street lamp.
Nearly decades are described optimal method (being also called operational research Methods) formed, and it mainly uses mathematical method to study Optimized Approaches and the scheme of various system, for policymaker provides the foundation of science decision.The object of optimal method is for studied system, tries to achieve the preferred plan of reasonable utilization human and material resources and financial resources, plays and improves usefulness and the benefit of system, finally reach the optimal objective of system.Say from mathematical meaning, optimal method is a kind of method asking extreme value, namely under one group of condition being constrained to equation or inequality, makes the target function of system reach extreme value, i.e. maximum or minimum value.Say from economic implications, under certain human and material resources and financial resource condition, economic effect is reached maximum (as the output value, profit), or under the production completing regulation or economic task, the resource such as human and material resources and financial resources making input is minimum.
The solution of optimization problem is commonly referred to as optimal solution.When solving practical problems, situation is intricate, and desirable optimal solution is not easily tried to achieve, or needs to pay larger cost, thus only requires the condition that can meet within the scope of certain limit to solution, not necessarily overemphasizes optimum.At the beginning of the fifties, at operational research development early stage, just someone proposes the concept of suboptimization and corresponding suboptimal solution thereof.Because the foundation of optimal model is inherently just a kind of approximate, some factor existed in practical problem, especially some non-quantitation factors are difficult to all take in a model; On the other hand, the effective ways that some solve comparatively complex model are also lacked.
The present invention is when the data that temperature sensor, voltage sensor or current sensor collect are greater than threshold value, it not the adjustment brightness value simply judging LED street lamp, but be optimized computing according to optimal method, and then obtain the street lamp brightness that street lamp should work when not shortening its life-span as far as possible.Described optimal method realizes according to the following Mathematical Modeling set up, that is:
The data that voltage, electric current, temperature sensor collect are designated as U, I and C respectively, the adjustment brightness of street lamp is designated as R, street lamp life curve formula is provided by the manufacturer of street lamp, is designated as S=f (c), and the pass of electric current and street lamp brightness is I=w (R); R is the environmentally current environment brightness degree determined of luminance parameter.
Under normal circumstances, the voltage U=220V at LED street lamp two ends, the scope that fluctuates is determined by whole Network Voltage Stability, temporarily be decided to be 20%, therefore, voltage constraints is U1 < U < U2, wherein U1=176V, U2=264V; Electric current is different with street lamp brightness according to the power of power supply, and change in the scope of I1 < I < I2, wherein I1 is the minimum current that LED street lamp normally works, and now street lamp brightness is minimum; I2 is the maximum current that LED street lamp normally works, and now brightness is also maximum.The LED street lamp of different capacity, I1 and I2 is different, and concrete numerical value is provided by street lamp producer.
LED street lamp is when street lamp panel temperature is higher than 65 DEG C, and street lamp is very easy to damage, therefore temperature constraint C≤65.
Now problem be converted into voltage, electric current, temperature and brightness degree r composition constraints under, ask the optimization problem of life-span S=f (c) maximum, and the adjustment brightness value R when life-span S maximum be optimization after adjustment brightness value.
Utilize the softwares such as matlab to carry out digitlization programming, try to achieve the optimal solution of this optimization problem, be i.e. the optimal adjustment brightness value of LED street lamp, and then carry out corresponding action by LED driver light adjusting circuit order LED driver control LED lamp panel.Different according to life curve formula S=f (c), the Mathematical Modeling of foundation is also not quite similar, and the duty Optimization method of corresponding employing is also different, usually can select in the methods such as functional approaching, pattern search method, least square method.
Control system inside also comprises communication module, according to certain communication protocol, the working condition of every street lamp and residing environmental condition can be uploaded to Surveillance center, realize the comprehensively monitoring of whole system.Especially severe in LED street lamp condition of work, or LED street lamp abnormal state, when local adjustment can not realize optimization object, can regulate by Surveillance center is unified, carry out cooperation control to the running parameter of its adjacent street lamp, while reducing energy consumption, in the street lamp life-span in balanced whole section, realize the optimal control of whole section street lamp, alleviate maintain and replace workload, use manpower and material resources sparingly.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a LED street lamp intelligent control, it comprises:
Parameter sensors, it is for gathering the relevant parameter of LED street lamp;
LED driver switching circuit, it is for controlling according to processor command the power supply that LED driver opens or closes LED street lamp;
LED driver light adjusting circuit, it is for when LED streetlamp power source is opened, and regulates brightness value to control the brightness of LED driver adjustment LED street lamp according to the LED street lamp received from processor;
LED driver, it is for the instruction according to LED driver switching circuit and LED driver light adjusting circuit, directly controls LED lamp panel and carries out corresponding action;
Processor, it is for the on off state of relevant parameter determination LED street lamp that collects according to described parameter sensors and regulate brightness value, and by the on off state determined and regulate brightness value to be sent to LED driver switching circuit and LED driver light adjusting circuit;
Communication module, it is for the information interaction at described intelligent control system and outer monitoring center;
Described parameter sensors comprises luminance sensor, and described processor determines the adjustment brightness value of described LED street lamp according to the ambient brightness that described luminance sensor collects;
Described intelligent control system also comprises temperature sensor, voltage sensor and current sensor; After described processor determines that ambient brightness that described luminance sensor collects is no more than predetermined threshold, the adjustment brightness value of the voltage and current determination LED street lamp of the LED street lamp that LED street lamp lamp plate temperature, voltage sensor and current sensor that the ambient brightness collected according to described luminance sensor, temperature sensor collect collect;
Ambient brightness divides different brackets, the different adjustment brightness value of the corresponding LED street lamp of ambient brightness of different brackets; When at least one in the voltage and current of the LED street lamp that LED street lamp lamp plate temperature, voltage sensor and current sensor that described temperature sensor collects collect exceedes corresponding predetermined threshold, the ambient brightness determination current environment brightness degree that described processor collects according to described luminance sensor, and the adjustment brightness value determining described LED street lamp according to the life curve formula of the voltage of determined current environment brightness degree, described LED street lamp lamp plate temperature, LED street lamp, electric current and LED street lamp.
2. the system as claimed in claim 1, is characterized in that, described parameter sensors comprises: voltage sensor, current sensor, luminance sensor and temperature sensor.
3. the system as claimed in claim 1, is characterized in that, described intelligent control system comprises LED driver switching circuit, and it controls the switch of described LED street lamp for order LED driver; After described processor determines that ambient brightness that described luminance sensor collects exceedes predetermined threshold, control by described LED driver switching circuit the power supply that LED driver opens or closes described LED street lamp.
4. the system as claimed in claim 1, is characterized in that, needs the ambient brightness opening LED street lamp to be divided into different brackets, the different adjustment brightness value of the corresponding LED street lamp of ambient brightness of different brackets; Described processor according to described ambient brightness determination current environment brightness degree, and according to the described adjustment brightness value of described current environment brightness degree determination LED street lamp.
5. the system as claimed in claim 1, it is characterized in that, the life curve formula of the described voltage according to determined current environment brightness degree, described LED street lamp lamp plate temperature, LED street lamp, electric current and LED street lamp determines that the adjustment brightness value of described LED street lamp is specially when ensureing described LED street lamp life-span maximum, pass through optimization method, solve and obtain best ambient light levels, and determine the adjustment brightness value of described LED street lamp according to determined suitable environment brightness degree.
6. an intelligent control method for LED street lamp, it comprises:
Step 1, ambient brightness is divided into different brackets, the LED street lamp that the ambient brightness of different brackets is corresponding different regulates brightness value;
Step 2, gather the ambient brightness of LED street lamp position by luminance sensor;
Step 3, judge whether it is greater than predetermined ambient brightness threshold value according to collected ambient brightness, if then close LED street lamp, and return step 2 and continue to perform; If not, then next step is performed;
Step 4, determine the ambient light levels of its correspondence according to described ambient brightness, and gather the voltage and current of LED street lamp lamp plate temperature and LED street lamp by temperature sensor, voltage sensor and current sensor;
Step 5, judge described temperature sensor, whether the corresponding data of voltage sensor and current sensor collection be all less than the respective threshold preset, if be all less than, then regulate the brightness of described LED street lamp according to the adjustment brightness value of LED street lamp corresponding to determined ambient light levels;
The respective threshold preset described in if the corresponding data of at least one transducer collection of step 6 is greater than, then determine the adjustment brightness value of described LED street lamp according to the life curve formula of the voltage of determined current environment brightness degree, described LED street lamp lamp plate temperature, LED street lamp, electric current and LED street lamp, and regulate the brightness of described LED street lamp according to the adjustment brightness value of determined LED street lamp.
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