CN103281827B - LED (Light-Emitting Diode) street lamp intelligent control system and method for dynamically feeding back load balance - Google Patents
LED (Light-Emitting Diode) street lamp intelligent control system and method for dynamically feeding back load balance Download PDFInfo
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Abstract
The invention discloses an LED (Light-Emitting Diode) street lamp intelligent control system for dynamically feeding back load balance. The LED street lamp intelligent control system comprises a control system, a communication base station and a node controller, wherein the communication base station is used for forwarding information and converting protocols between the control system and the node controller; the node controller is used for detecting corresponding parameters and completing street lamp intelligent control according to a control protocol in a control data packet of the control system; and the control system is used for obtaining state information through analyzing corresponding parameters detected by the node controller, displaying the state information on a user interface, and transmitting an intelligent control data packet to the node controller according to corresponding parameters.
Description
Technical field
The present invention relates to semiconductor LED lamp control field, particularly relate to a kind of LED street lamp intelligent control of dynamic feedback of load equilibrium.
Background technology
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.Along with the continuous decline of LED street lamp price, its competitive advantage will be more and more obvious.There has been the experimental project of some LED street lamp in the whole nation, such as main road, Dongguan, Guangdong Dong Jiang LED illumination engineering, and in Hubei, some roads and new district start or intend using LED road lighting apparatus.Universal along with LED street lamp, provides that a kind of to be easy to operation, intelligence, high reliability and energy-conservation LED control system be the major issue faced at present.
At present, the high-power LED street lamp major part used is all simple direct lighting, lacks necessary Based Intelligent Control, although or some have the function of Based Intelligent Control, but but automatically can not detect the illuminating position of street lamp, can not manually regulate and control single street lamp easily.Existing illumination management system mostly adopts wire cable to control lighting, and carry out linear unified regulation and control to LED street lamp, communication protocol more complicated, construction cost and operation cost are all higher.
For above problem, the intelligent control system of some LED street lamp is also arisen at the historic moment, the control system with timed switching function and node Ad Hoc network function appears in the paper of research one after another, wherein most paper and patent are all expanded the application of LED street lamp, and do not have detailed scheme and discussion to its Intelligent Control Strategy.
Wireless intelligent LED streetlamp control system disclosed in prior art, it comprises road lamp management centring system and Zigbee wireless sensing control system; In Zigbee wireless sensing control system, each LED 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, 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 carried out network by public network with wireless road lamp intelligent controller in Zigbee wireless sensing control system and is connected; 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 the prior art does not adopt the control strategy of dynamical feedback constantly to correct required load to reach the object of illumination and saves energy as required.Therefore it can not realize the Based Intelligent Control of the dynamic realtime to LED street lamp exactly.
LED street lamp intelligent control disclosed in prior art, it comprises backbone network and the dry net of N level, and backbone network is connected with the dry net of multiple one-level is wireless, and the dry net of N-1 level is connected with the dry net of multiple N level is wireless; Backbone network comprises server and some client's control terminals of being connected with server and some radio concentrators; The dry net of N level comprises wireless terminal controller and the ambient light illumination checkout equipment be attached thereto, vehicle flow monitoring equipment and some LED, the wireless terminal controller of the dry net of N level is connected with the wireless terminal controller of the dry net of N-1 level is wireless, and the wireless terminal controller of the dry net of one-level is connected with radio concentrator is wireless.This utility model controls LED by building wireless tree network, installation and maintenance is convenient, investigation fault is very time saving and energy saving, and can the environmentally change of illuminance, how many automatic adjustment LED light on and off of vehicle flowrate on road control program, Street lamps control is more intelligent.
Although the prior art has the detecting devices of measurement environment illumination and vehicle flowrate, but the final utilization of these sensing datas is in the control of lamp on/off, do not have the size of environmentally brightness and vehicle flowrate to control the Intelligent adjustment of the due load of LED street lamp and brightness, light on and off control can reduce the useful life of LED frequently.Therefore the program does not realize the illumination as required of LED street lamp, the object that can not reach saves energy and extend street lamp useful life.
Summary of the invention
Control program for existing LED street lamp does not have strategy and the method for specific Based Intelligent Control, does not have the state of LED street lamp in dynamic realtime reflection system yet, cannot reach the object that the real equilibrium of loads of road lamp and real realization are thrown light on as required.Therefore the present invention proposes the control program based on technology of Internet of things, networking technology and control mode all adopt up-to-date technology of Internet of things and intelligent control technology, propose that multi-parameter detects, the closed loop intelligent control system of the smart allocation of street lamp dynamic load, this system not only ensures convenience, safety to LED street lamp, reliably, accurately controls, and has saved electric energy and extended useful life of LED street lamp.
The invention discloses a kind of LED street lamp intelligent control of dynamic feedback of load equilibrium, it comprises: control system, communication base station and Node Controller;
Wherein, described communication base station is used for the forwarding of information and the conversion of agreement between control system and Node Controller, and described Node Controller for detecting relevant parameter, and completes street lamp Based Intelligent Control according to the control protocol in the control data bag of control system; Described control system is resolved according to the relevant parameter that described Node Controller detects and is obtained state information, and display on a user interface, and sends Based Intelligent Control packet to Node Controller according to described relevant parameter.
A LED street lamp intelligent control for dynamic feedback of load equilibrium, it comprises:
Step 1, Node Controller gather the state information of each LED street lamp, and are sent to control system;
Step 2, control system determine according to the state information of each received LED street lamp the load that each LED street lamp is total;
Step 3, control system also determine according to described state information the dynamic load distribution weights affecting each LED street lamp;
Step 4, control system distribute the task load of each LED street lamp according to described distribution weights, form the allocative decision of LED street lamp, and described allocative decision is sent to Node Controller, complete control task;
Step 5, complete control task after, if the actual power of each LED street lamp comprehensively equals described total load, then perform step 6; Otherwise go to step 2 execution, to reformulate allocative decision;
Whether step 6, the load detecting each LED street lamp transship, if overload, then determine new weights, and according to new right value update allocative decision.
The such scheme that the present invention proposes adopts the control method of dynamical feedback to achieve the FEEDBACK CONTROL of real-time status, improves the response speed of system, can according to the change rapid development Intelligent Control Strategy of vehicle flowrate, flow of the people and ambient brightness.Such scheme of the present invention also adopts the distribution of load balancing and control strategy not only to extend the useful life of LED street lamp system, and has good effect to the uniformity of localized lighting and saves energy.What the solution of the present invention illustrated LED street lamp with graphical method intuitively opens up cloth structure, clear in structure and information is comprehensive; Comprehensive Street lamps control strategy is simple to operation and easily revise, and can realize subregion, shunt and implement to control to single street lamp.Substantially increase the efficiency of work.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the LED street lamp intelligent control of dynamic feedback of load equilibrium in the present invention;
Fig. 2 is the control method flow chart of the LED intelligent control system of dynamic feedback of load equilibrium in the present invention;
Fig. 3 is the concrete example schematic diagram of lamp of breaking down.
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 of dynamic feedback of load equilibrium.
Fig. 1 shows the structured flowchart of the LED street lamp intelligent control of dynamic feedback of load equilibrium disclosed by the invention.As shown in Figure 1, described LED intelligent control system mainly comprises: PC platform control system, communication base station and Node Controller.Described PC platform control system carries the integrated information monitoring of LED street lamp, management and the practical function of intelligent control method.Communication base station is mainly used in realizing the protocol conversion between control system and Node Controller and information forwarding capability.Bottom layer node controller realizes the detection of ambient brightness, the detection of vehicle flowrate and flow of the people, topology of networks, routing policy and to functions such as street lamp Based Intelligent Control.
Above-mentioned LED intelligent control system disclosed by the invention realizes following controlling functions to LED street lamp, and it specifically comprises:
1, Real-Time Monitoring is carried out to LED street lamp; Its specific implementation step comprises:
Step 11, under normal circumstances, the Node Controller collection of LED street lamp also uploads the LED street lamp state information that its transducer collects, and described state information comprises current value, ambient brightness value, wagon flow value.
Described state information to be uploaded to the data receiver relay in base station by step 12, Node Controller by wireless network, then base station is by the Internet ICP/IP protocol, is uploaded in the host computer server in described PC platform control system.
Status information data described in software parses in step 13, host computer server, and state information parsing obtained is as current value, magnitude of voltage and ambient brightness value etc., real-time display on a user interface, and alert process is carried out for abnormal state of affairs information parameter value, to realize Real-Time Monitoring to LED street lamp and warning.
Wherein, with the graphical state that mode is divided into groups intuitively, subregion shows described LED street lamp in host computer user interface, and environmental parameter value is if ambient brightness value is for the intelligent control algorithm analysis of host computer.
2, Based Intelligent Control is carried out to LED street lamp; Its concrete steps realized are:
Step 21, user carry out time set by host computer, comprise parameters such as arranging period, festivals or holidays and season, and when the some time of advent time, host computer generates intelligent control protocol, and sends Based Intelligent Control packet to the Node Controller of LED street lamp.Wherein, described Based Intelligent Control generates control protocol by the intelligent control algorithm of dynamical feedback and load balancing to send control data bag to the Node Controller of LED street lamp and realize.
After step 22, Node Controller receive Based Intelligent Control packet, carry out switch and the light modulation action of LED street lamp according to the control protocol in Based Intelligent Control packet.
3, grouping management is carried out to LED street lamp; Its specific implementation step is:
Step 31, host computer receive the grouping management information of LED street lamp by user interface.
The grouping management information received is stored in relevant database by step 32, host computer.Wherein, the tables of data that to arrange with region, road, group and street lamp address in described relevant database be field, comprise road with region, road comprises group, and group comprises the topological structure of street lamp address and then realizes LED street lamp is carried out to subregion, along separate routes, divided into groups to carry out simple Topology Management.In addition, user can also can be added dynamically LED street lamp by the user interface of host computer, delete, the operation such as amendment.Each LED street lamp and communication base station bind unique address, would not cause confusion like this to the operation of LED street lamp and base station.
4, the integrated management of system; Host computer can record, detect the heartbeat frame of communication base station and issue success or not to operating protocol and carry out record to the operation information of system, can Timeliness coverage and warning when guaranteeing to break down in base station.Enable the operation that system is safe and reliable.
In above-mentioned controlling functions, carrying out Based Intelligent Control to LED street lamp is that host computer is realized by intelligent control algorithm, wherein, this intelligent control algorithm can gather detected parameters important in LED information display system, and calculate real-time value of feedback, reallocate in conjunction with the load of historical feedback value to the single led street lamp in system, to reach the function of dynamic debugging system load, algorithm can make dynamic adjustment by the load threshold value of value of feedback to each connection LED street lamp, to meet the different situations of dynamic requests.
LED street lamp is along with the growth of service time, the load-taking capacity of LED street lamp will reduce, system can go out Dynamic Weights according to the calculation of parameter of each side when running, the load that adaptive load balancing should bear according to each LED street lamp of size equalization of Dynamic Weights, the Dynamic Weights W evaluating the load-taking capacity of LED street lamp correctly must reflect the real-time load condition of LED street lamp in each connection, to predict the load variations that each connection LED street lamp is possible in the future.
Fig. 2 shows the method flow diagram of the intelligent algorithm realization in the present invention, LED street lamp being carried out to Based Intelligent Control.The method comprises as shown in Figure 2:
Steps A: state acquisition feeds back.Mainly by the transducer of the magnetic-field Sensor for Traffic Counting and ambient brightness that are positioned at Node Controller terminal and the fault message etc. of fault analyzer collection wagon flow value, ambient brightness value and LED street lamp, and be uploaded to the control end of described PC plateform system.
Step B: the control end of described PC plateform system, according to the above parameter information of each LED street lamp received, determines total load Z.Specific as followsly to determine:
Z＝(a+c)*n*P
Wherein, a, c are respectively the factor of influence of ambient brightness and vehicle flowrate, and factor of influence represents that ambient brightness and vehicle flowrate are to the influence degree of total load Z, and n is LED street lamp number, and P is the power of single led street lamp.
Step C: the factor determining the weights W of the dynamic load distribution affecting each LED street lamp according to uploaded parameter information, specifically comprises following factor:
The size S of C1:LED street lighting intensity, definition S=L/I, wherein L represents brightness value, and I represents the current value under this brightness value.This parameter S will reduce along with the prolongation in LED street lamp useful life.The load-taking capacity of LED street lamp can be represented with parameter S.
The factor μ that around C2:LED street lamp, the size of vehicle flowrate determines.In order to realize control effects better, LED street lamp adjacent before and after the factor that the size of vehicle flowrate determines is distributed to.For L1, L2, L3 tri-adjacent LED street lamps, if detect that the vehicle flowrate at L2 place increases, then the size order of the μ after adjustment is μ 1=μ 3 > μ 2.
C3: if there is trouble light, so must there is the situation of brightness irregularities in street lamp, therefore, in order to reach the illumination loss of better illuminating effect and compensation LED street lamp fault, suitable increase can close on the lighting load of lamp.
Fig. 3 shows the concrete example schematic diagram of the lamp that breaks down.Such as, as shown in Figure 3, street lamp L1 breaks down, increase the lighting load closing on lamp so successively, the size of the factor of influence λ (influence degree to lighting load) of street lamp L1, L2, L3, L4, L5 and L6 is followed successively by λ 4 > λ 2=λ 3 > λ 5=λ 6;
C4: be each street lamp distribution load according to the size of weights, can not ensure in the load threshold value that it bears, therefore add the float factor b of sharing of load.If the load value of reality is greater than load threshold value, so b is negative value; If the load value of reality is less than load threshold value, so b be on the occasion of.
Step D: calculate described weights W:W=ε according to above-mentioned factor
1s+ ε
2μ+ε
3λ+ε
4b.Wherein, ε is the significance level of parameters, and ε
1+ ε
2+ ε
3+ ε
4=1.
Step e: the task load of distributing each LED street lamp according to the ratio of weights, and then the allocative decision forming LED street lamp.Suppose W1+W2+...+Wn=WZ; The load that so each street lamp is joined is Pn=(Wn/WZ) * Z; N=1,2,3....Then the current value that each LED street lamp be should bear of PC terminal and magnitude of voltage send to each LED street lamp Node Controller by command frame.The electric current of LED street lamp is adjusted and magnitude of voltage completes control task by each LED road lamp controller.
Step F: if the summation Z1 of each LED street lamp actual power equals required load Z (calculating gained in step B) in system, so carry out the load adjustment of each LED street lamp, namely performs step G.If unequal, just again complete burden apportionment according to total load Z, namely repeat step B, C, D, E, F.
Step G: if met the task of total load, namely actual total load Z1 equals required total load Z, whether then carry out the cutting load testing of single led street lamp, namely detect each LED street lamp and transship, standard of its overload is whether the actual load of each LED street lamp overloads threshold value.
The computing formula of the Real-time Load threshold value of single led street lamp is: H=(S1/S2) * P1; Wherein S1 is actual illumination intensity, and S2 is specified illumination intensity, and P1 is rated power.If under street lamp is operated in rated current and for nominal brightness, so the rated power of its load threshold value H and street lamp is equal.And actual load H1 is the actual power P2 of LED street lamp.
If its actual load H1 and load threshold value H not etc., does not then utilize weights factor of influence b to adjust, i.e. factor of influence b in weights W in step D, according to formula (the W=ε of step D
1s+ ε
2μ+ε
3λ+ε
4b.Wherein, ε is the significance level of parameters, and ε
1+ ε
2+ ε
3+ ε
4=1) new weights W is determined.It is finally made to meet burden requirement.
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 for dynamic feedback of load equilibrium, it comprises:
Step 1, Node Controller gather the state information of each LED street lamp, and are sent to control system; Described state information comprises ambient brightness and vehicle flowrate, and total load calculates as follows:
Z＝(a+c)*n*P
Wherein, a, c are respectively the factor of influence of ambient brightness and vehicle flowrate, and factor of influence represents that ambient brightness and vehicle flowrate are to the influence degree of total load Z, and n is LED street lamp number, and P is the power of single led street lamp;
Step 2, control system determine according to the state information of each received LED street lamp the load that each LED street lamp is total;
Step 3, control system also determine according to described state information the dynamic load distribution weights affecting each LED street lamp;
Step 4, control system distribute the task load of each LED street lamp according to described distribution weights, form the allocative decision of LED street lamp, and described allocative decision is sent to Node Controller, complete control task;
Step 5, complete control task after, if the actual power of each LED street lamp comprehensively equals described total load, then perform step 6; Otherwise go to step 2 execution, to reformulate allocative decision;
Whether step 6, the load detecting each LED street lamp transship, if overload, then determine new weights, and according to new right value update allocative decision.
2. the method for claim 1, is characterized in that, described weights calculate as follows:
W＝ε
1S+ε
2μ+ε
3λ+ε
4b
Wherein, S is the illumination intensity size of LED street lamp, the factor that μ determines for the size of vehicle flowrate around LED street lamp, and λ is to the influence degree of LED street lamp to lighting load, and b is the float factor of sharing of load, and ε is the significance level of parameters, and ε
1+ ε
2+ ε
3+ ε
4=1.
3. method as claimed in claim 2, it is characterized in that, for each LED, the vehicle flowrate near it is larger, and the μ corresponding to it is less.
4. the method for claim 1, is characterized in that, in step 4, the task load of each LED street lamp is distributed as follows:
Pn＝(Wn/WZ)*Z；n＝1、2、3...
Wherein, Pn represents the task load of the n-th LED street lamp, and Wn is the weights of the n-th LED street lamp, and WZ is the weights summation of each LED street lamp, and Z is total load.
5. method as claimed in claim 2, it is characterized in that, Real-time Load and its load threshold value by comparing LED street lamp in step 6 judge whether it transships, and described load threshold value calculates as follows:
H＝(S1/S2)*P1
Wherein, S1 is actual illumination intensity, and S2 is specified illumination intensity, and P1 is rated power.
6. method as claimed in claim 5, the float factor b by sharing of load in step 6 determines new weights, if wherein actual negative charge values is greater than load threshold value, so b is negative value; If the load value of reality is less than load threshold value, so b be on the occasion of.
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| CN104470070A (en) * | 2014-11-20 | 2015-03-25 | 国家电网公司 | Street lamp control method, device and system |
| CN106413231A (en) * | 2016-11-29 | 2017-02-15 | 浙江方大智控科技有限公司 | Wireless control method for intelligent street lamp and system thereof |
| CN107087325B (en) * | 2017-05-24 | 2018-12-25 | 昆山高过云智能科技有限公司 | Intelligent method for controlling street lamps |
| CN108846957B (en) * | 2018-07-05 | 2020-12-15 | 山东清华康利城市照明研究设计院有限公司 | LED street lamp based on block chain technology |
| CN110381650A (en) * | 2019-04-11 | 2019-10-25 | 江苏南大先腾信息产业股份有限公司 | A kind of city illumination intelligent monitor system of street lamps based on single-lamp controller |
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