CN101267703B - An energy-saving street lamp brightness on-demand dynamic adjusting system and its control method - Google Patents
An energy-saving street lamp brightness on-demand dynamic adjusting system and its control method Download PDFInfo
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- CN101267703B CN101267703B CN2008100181016A CN200810018101A CN101267703B CN 101267703 B CN101267703 B CN 101267703B CN 2008100181016 A CN2008100181016 A CN 2008100181016A CN 200810018101 A CN200810018101 A CN 200810018101A CN 101267703 B CN101267703 B CN 101267703B
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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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Abstract
The invention relates to a technology of street lamp energy saving and a remote centralized monitor field. The system is composed of an on-lamp device (1), a data communication channel (2), a street control center (3), a common data communication channel (4) and a city server (5). A model of the number of high-brightness lamps changed with a movement speed is created, the street control center (3) detects the time of vehicles/foot passengers and computes the number of the high-brightness lamps at the two sides of a moving direction of the vehicles/foot passengers via the on-lamp device (1), and further controls the corresponding lamp brightness, control the high-brightness lamps to be dark after relaying some time, thereby realizing the energy-saving effect that the brightness is adjusted dynamically. With a network street lamp hardware platform of the invention, functions such as remote centralized charging/operation monitoring/controlling, traffic statistics and leading, emergency alarming, etc., are derivate via certain circuits and softwares.
Description
Technical field
Energy-conservation and the remote centralized control that the present invention relates to a kind of street lamp is technological.
Background technology
According to statistics; China's gross generation in 2006 is 28,344 hundred million kWh; Wherein electric consumption on lighting accounts for about 12% of whole society's electricity consumption total amount, and urban road public illumination power consumption accounts for about 30%, 2006 years China's road lighting power consumptions of whole electric consumption on lighting above 100,000,000,000 kWh.
The control system of street lamp mainly adopts time control and light-operated method at present.Light-operated, utilize light sensor sampling ambient lighting intensity, light or extinguish street lamp through control circuit.If ambient lighting intensity is lower than a certain threshold values, then light street lamp, be higher than a certain threshold values, then extinguish street lamp.Time control, zones of different latitude of living in is different, so different in size round the clock.Time control is exactly the light on and off time of utilizing local round the clock length throughout the year to come rough control street lamp.As everyone knows, midnight later on the road Pedestrians and vehicles significantly reduce, adopt above-mentioned two kinds of control modes all still need light street lamp, keep certain brightness.Although improve to some extent in recent years, that is exactly to turn on light, monolaterally to turn on light, turn down street lamp brightness at a distance from small cup later at midnight.Development along with technology; The development of microcontroller, public data channel (wired Internet/WLAN/GPRS/CDMA/GSM etc.), power line carrier transmission techniques; Make modern road lamp energy-saving system can realize remote measurement, remote control; But mainly also be based on above-mentioned two kinds of control modes and Artificial Control mode, can't realize regulating of brightness with need.Fail fundamentally to solve the power saving of street lamp, cause serious waste.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of energy-conservation street lamp brightness on-demand dynamic adjusting system and control method are provided.
The present invention is achieved in that
Native system is made up of equipment, street-level control centre on the lamp.Connect by data communication module between equipment and the street-level control centre on the lamp.
Equipment on the lamp: light source, brightness regulation module, microcontroller, vehicle/pedestrian detection module, data communication module.Brightness regulation module, vehicle/pedestrian detection module, data communication module all are connected with microcontroller.Light source is connected with the brightness regulation module.
Street-level control centre: calculate platform and in the above control algolithm, data communication module of operation, data communication module is connected with calculate platform, and the data communication module of equipment is connected on the data communication module of this part and the lamp.
Said system and control method can be implemented in street lamp brightness on-demand dynamic adjustments on the street that does not have bifurcated.
If need to increase remote centralized chargings/operational monitoring/controlled function, need simultaneously that equipment increases the current/voltage measuring module on lamp, increase the common number communication channel interface in street-level control centre, increase comprises the computer of runtime database/generalized information system/monitoring of software and the city-level server of common number communication channel interface.The computer of city-level server is connected with the common number communication channel interface, and the common number communication channel interface of common number communication channel interface and street-level control centre is connected.
As if needing the increase magnitude of traffic flow to add up and dredge function, need while equipment on the part lamp to increase display module, comprise runtime database/generalized information system/magnitude of traffic flow statistics and dredge the computer of software and the city-level server of common number communication channel interface in street-level control centre increase common number communication channel interface, increase.The computer of city-level server is connected with the common number communication channel interface, and the common number communication channel interface of common number communication channel interface and street-level control centre is connected.
If need to increase the emergency call function, need simultaneously that equipment increases the emergency call button on lamp, increase the common number communication channel interface, increase and comprise the computer of runtime database/generalized information system/emergency call software and the city-level server of common number communication channel interface in street-level control centre.The computer of city-level server is connected with the common number communication channel interface, and the common number communication channel interface of common number communication channel interface and street-level control centre is connected.
The software and hardware module lap that above-mentioned three kinds of derivation functions need increase can merge.For example, when needing above-mentioned three kinds of functions at the same time, only need a city-level server to get final product.
The present invention's system mainly contains two kinds of mode of operations: permanent bright pattern and brightness on-demand dynamic adjustments pattern.To some heavy traffic period, such as before 12 of midnights, system adopts permanent bright pattern.At this moment, the same with common road lamp system, all street lamps are all opened, and keep constant luminance.Arrive traffic during the spare time, for example just got into brightness on-demand dynamic adjustments pattern afterwards to dawn midnight; Under this pattern, there is not vehicle through out-of-date, street lamp is kept lower brightness; In case vehicle/pedestrian detection module detects vehicle/pedestrian's process; Equipment is given street-level control centre through data communication module transmission information on the lamp, and through the computing of control algolithm, street-level control centre sends to equipment on the lamp of the some in vehicle heading the place ahead and heightens intensity command.After vehicle crosses, send again and turn down intensity command.So just can keep having only the street lamp Gao Liang of the some in vehicle ' the place ahead, all the other street lamps are got back to the low-light level state, to reach energy-saving effect.The number of the high bright street lamp in the place ahead is by the travel speed decision of vehicle, and speed is fast more, and number is many more.
Equipment on the lamp, street-level control centre, city-level server through data communication module, public data communication channel connect into one can mutual communication networked street lamp hardware platform.The real-time voltage that the voltage/current measurement module of equipment records on the lamp, electric current reach and then calculate the energy consumption that gets; Street-level control centre estimates to the magnitude of traffic flow that vehicle/pedestrian's frequency statistics draws Equipment Inspection on the administration lamp; Emergency call information all can be up to the city-level server through this network platform.The city-level server also can go downwards to equipment on the lamp through this network platform to the control command and the traffic dispersion information of every street lamp.
The street lamp hardware platform that the present invention is based on networking makes street lamp brightness to reach energy-saving effect with the need adjusting with certain control algolithm.Utilize its network, derive remote centralized charging/operational monitoring/control through installing certain circuit and software additional, and functions such as the magnitude of traffic flow is added up and dredged, emergency call.
Description of drawings
Fig. 1 system construction drawing;
Equipment structure chart on Fig. 2 lamp;
Fig. 3 street-level control centre structure chart;
Fig. 4 city-level server architecture figure;
Equipment voltage/current measurement module key diagram on Fig. 5 lamp;
Equipment LonWorks communication module and the LonWorks of street-level control centre communication module communications data frame on Fig. 6 lamp;
The device communication module data transfer rate is selected key diagram on Fig. 7 lamp;
Fig. 8 control algolithm model;
The multi-direction key diagram of the many cars of Fig. 9 control algolithm;
Figure 10 lightens the lamp algorithm flow chart;
Figure 11 dim lights algorithm flow chart.
Embodiment
Below in conjunction with two embodiments of the invention of accompanying drawing narration.
The general structure of embodiment 1. present embodiments is shown in accompanying drawing 1, and it comprises equipment 1 on the lamp, power line channel 2, street-level control centre 3, GPRS channel 4, city-level server 5.
1.1 equipment 1 on the lamp
On the lamp equipment 1 as the terminal of system have the dimmer command of execution, magnitude of traffic flow statistical signal is gathered, is received alarm signal, equipment has road conditions concurrently and dredges the effect that information shows on the lamp of part critical junction.Set forth existing concrete functions of modules, the status that these functions are related to.
1.1.1?LED6
Light source adopts the bright LED6 of a plurality of high-power height to be composed in series.
1.1.2 PWM brightness regulation module 7
Adopt PWM (pulse modulation technology) to regulate the adjusting that the voltage that is added on the bright LED6 of high-power height is realized brightness.
1.1.3 voltage/current measurement module 8
Voltage/current measurement module 8 is measured the voltage and current that LED6 consumed in real time.Microcontroller calculates energy consumption through voltage and current, is used for chargeing.Shown in accompanying drawing 5, the serial connection resistance is the resistance 19 of R in to the electric power loop 18 of LED6 power supply, and with the voltage of A/D chip while sampling resistor 19 two ends with respect to ground.If the sampling period is T
s, when the i time sampling, obtaining resistance 19 voltage is V1
i, V2
i, then can get the LED6 consumed current and be (V1
i-V2
i)/R, the last voltage of LED6 is V2
i, the power that can get LED6 this moment is P
i=U
i* I
i=V2
i* (V1
i-V2
i)/R.Because the sampling period is generally very short, when for example sample rate is 1Msample/sec, sampling period T
s=1 μ s is at T
sThe power that interior LED6 consumes can be thought constant, must be W in the energy consumption of i cycle internal consumption
i=P
i* T
s, energy consumption summation between each sampling period is just obtained total energy consumption:
1.1.4 microcontroller 11
1.1.5 supersonic vehicle/pedestrian detection module 13
Object in the road width is surveyed in the basic role of this module exactly.The road width is set as system parameters when mounted.This module adopts the range finding of ultrasonic reflection formula.Ultrasound emission and receiving transducer are installed in the certain altitude of lamp post, then the distance of the nearest object in measuring distance roadside.If result of detection is less than the road width, can think like this has vehicle/pedestrian's process.
In practical application, also can select infrared laser etc. as detection means.
1.1.6 LonWorks communication module 10
LonWorks communication module 10 is responsible on the lamps between the equipment 1 and street-level control centre 3 information reliably, efficiently, transmit fast.Data communication module has a variety of embodiments; Especially with the power line data communication technology (can adopt the LonWorks agreement of PLC technology like low layer) of channel; These two kinds of technology of short-distance wireless data communication technology (like ZigBee) are fit to native system; They all need not lay wire message way, can significantly reduce cost, and are beneficial to the transformation to old system.
On the lamp between equipment 1 and the street-level control centre 3 transmission of information carry out through the mode of Frame shown in accompanying drawing 6, the uplink and downlink Frame can carry out respective change according to concrete function.
Because control algolithm receives that according to street-level control centre 3 equipment 1 on each lamp detects vehicle/pedestrian's time work; So no matter specifically select for use any scheme as data communication module; The selection of data transfer rate must be enough high, otherwise can upset this event sequence.For example; The equipment that with the power line is channel often has a lot of nodes to hang on the same physical channel, at synchronization a node busy channel can only be arranged, for fear of conflict; Often have carrier sense/conflict monitoring function, this can bring problem under the not high enough situation of data transfer rate.Shown in accompanying drawing 7, suppose that the distance between the adjacent lamp post is S, the time of a Frame of device transmission is t on the lamp, at t
1Constantly, equipment 1-1 will detect vehicle/pedestrian's uplink data frames and send on the #1 lamp, at t
2Constantly equipment 1-2 prepares signal is sent on the #2 lamp, and the uplink data frames of equipment 1-1 has not also passed on this moment # 1 lamp, thus retransmit behind the equipment 1-2 random wait certain hour on the #2 lamp, at t
3Constantly; Equipment 1-3 prepares signal is sent on the #3 lamp, but the positive busy channel of equipment 1-1 on this moment # 1 lamp, and equipment 1-3 also gets into random wait on the #3 lamp; In case the uplink data frames of equipment 1-1 is sent and is finished on the #1 lamp; On the #2 lamp on equipment 1-2 and the #3 lamp equipment 1-3 since the time of waiting for be at random, so possibly cause on the #3 lamp equipment 1-3 than the more Zao busy channel of equipment 1-2 on the #2 lamp, thereby make the mistake.So in implementation process, require to select the higher transmission plan of data transfer rate,, just satisfied after this relational expression also not the pattern of needs carrier sense/conflict monitoring with the relational expression of time t＜S/v of satisfying transmission one frame uplink data frames.
1.1.7 emergency call button 9
At the lamp post certain altitude emergency call button 9 is installed, in case of emergency, when for example getting into an accident; Only need the wounded to press button; Send interrupt signal just for microcontroller 11, equipment 1, street-level control centre 3 reach city-level server 5 with trouble signal on the lamp, according to equipment 1 numbering on the street-level control centre that sends alarm signal 3 numberings and the lamp; Emergency call software is easy to the accurate position that the accident that obtains takes place, and is convenient to emergency relief.
1.1.8 EEPROM and system parameters configuration interface 12
System parameters such as device numbering on EEPROM storage road width, the lamp.Through system parameters configuration interface 12 above-mentioned parameter is deposited into EEPROM when mounted.
1.2 street-level control centre 3
Street-level control centre 3 plays a part the intermediate layer in whole system, it comprises LonWorks communication module 10, calculate platform 15, GPRS modulator-demodulator 16.To following, the control of equipment 1 on all lamps of each street-level control centre 3 responsible a street.According to the information that equipment 1 on each lamp is sent, calculate platform 15 carries out the computing of control corresponding algorithm, and control command is sent on the LonWorks communication module 10 of equipment 1 on each lamp through LonWorks communication module 10.To last, street-level control centre 3 sends to city-level server 5 with the information such as traffic information that street lamp current/voltage/consumption information, emergency call information, statistics obtain through GPRS channel 4.Simultaneously, be responsible for receiving the control information that city-level server 5 sends.
GPRS modulator-demodulator 16.Interface between software and hardware mainly as the GPRS channel 4 of street-level control centre 3 and city-level server 5.Can select suitable channel according to technical development and needs, for example GPRS, CDMA, WLAN, wired Internet etc. and respective modem.
1.3 city-level server 5
Use as main control server.Entire city has only one.Receive the data that street-level control centre 3 sends through GPRS channel 4 through GPRS modulator-demodulator 16.Through operating in database and the generalized information system on the computer 17, the numbering according to equipment 1 on street-level control centre 3 and the lamp is mapped to equipment 1 on each lamp on the actual map, convenient monitoring intuitively.Charge through installing street lamp additional/in real time monitoring/Control Software, the magnitude of traffic flow add up and dredge software, emergency call software can be realized derivation function intuitively on map.
1.4 brightness on-demand dynamic adjustments control method
1.4.1 control algolithm model
The controlling models of this algorithm is the model based on speed.In brightness on-demand dynamic adjustments pattern, only need the lamp of the enough numbers in user the place ahead to provide suitable brightness just can not influence user's use.Can satisfy customer requirements like this and reach purpose of energy saving again.Vehicle/pedestrian's speed is fast more, and the lamp of the place ahead Gao Liang just needs many more, and our control algolithm just is the model basis with speed.Because the price comparison of velocity radar uniform velocity transducer is expensive; We do not have direct employing speed as control variables; But utilize Equipment Inspection on each lamp to realize rate pattern as control variables to vehicle/pedestrian's time value,, algorithm will be elaborated in realizing to this algorithm.
The structural model of this algorithm.Every do not have the road of bifurcated all can be abstracted into straight line model.Each street lamp post is installed equipment 1 on a cover lamp, and number consecutively when mounted.Each street-level control centre is responsible for one can abstract straight road, and the street-level control centre 3 unified numberings of entire city are in that equipment 1 numbering can repeat on the lamp of different street-level control centre compass of competency.
Detect when in the road width W, object being arranged as the supersonic vehicle/pedestrian detection module 13 of equipment on the lamp 1; On the lamp equipment 1 just send out one be loaded with detect vehicle/pedestrian uplink data frames to street-level control centre 3, the record of 1 uplink data frames time of advent of equipment on this lamp refreshes in street-level control centre 3.Realize the brightness on-demand dynamic adjustments the up-to-date time of advent that street-level control centre 3 just detects vehicle/pedestrian according to equipment 1 on all lamps of its administration.
1.4.2 control algolithm realizes
Fast more in order to reach speed; The number of the high bright lamp in the place ahead is many more; Need be with bright lamp number of height and velocity correlation, what this algorithm was indirect gets up Equipment Inspection on the bright lamp number of height and direction and the lamp to vehicle/pedestrian's up-to-date association in time, reached required purpose; Make that simultaneously system configuration is simple, cheap.
For shortcut calculation, we allow after direction of traffic to also high bright a spot of lamp.Suppose that current detection equipment to vehicle/pedestrian's the lamp is i number, we adopt linear function to decide the number at the high bright lamp in current vehicle/the place ahead, pedestrian position and rear:
L
d＝A+B/abs(t[i]-t[i+1])---(1)
L
a＝A+B/abs(t[i]-t[i-1])---(2)
A≤L
d，L
a≤C---(3)
Each item implication: L in the formula
dEquipment 1 is numbered the number that the direction of successively decreasing needs high bright lamp on lamp; L
aEquipment 1 numbering increases progressively the number that direction needs high bright lamp on lamp; A has determined minimum high bright lamp number; B has determined at the number with high bright lamp under the constant duration; C has determined maximum numbers of high bright lamp.
Combine above-mentioned formula (1), (2), (3) and accompanying drawing 8 that this algorithm is detailed at present.Suppose that current time is t [2]; Equipment 1-2 detects vehicle/pedestrian on the #2 lamp; (equipment 1 transferring data frames is fixed value to the transmission and the processing time-delay of street-level control centre 3 on the lamp to ignore uplink data frames transmission and processing delay; This fixed value of equipment time difference meeting cancellation on the adjacent lamps), street-level control centre 3 refreshes the up-to-date time that equipment 1-2 on the #2 lamp detects vehicle/pedestrian for t [2], at this moment; The time t [1] that equipment 1-1 detects vehicle/pedestrian on the #1 lamp of street-level control centre 3 storages is for up-to-date; Vehicle/pedestrian does not also pass through equipment 1-3 on the #3 lamp, so the time that equipment 1-3 detects vehicle/pedestrian on the #3 lamp also less than upgrading, detects the time t [3] of vehicle/Pedestrians and vehicles for the last time.In above-mentioned sight, abs (t2]-t [1]) abs (t [2]-t [3]), so L
aL
dSo will be far longer than the number of high bright lamp on the direction of successively decreasing at the number of the high bright lamp of direction that device numbering on the lamp increases progressively.The equipment 1-2 on receiving the #2 lamp of street-level control centre 3 transmits to detect after vehicle/pedestrian's uplink data frames and calculates L in very short time
a, L
dCombine current detection numbering of equipment to the lamp that transmits vehicle/pedestrian signal to calculate device numbering on the lamp that to turn on light again, send downlink data frame, thereby realized opening plurality purpose lamp in direction of motion the place ahead; Open lamp seldom in the wings, reach the effect of brightness on-demand dynamic adjustments.
This algorithm also has good applicability for the multi-direction situation of many cars.Shown in accompanying drawing 9, carve t [2]=t [3] at a time, cause the L that calculates like this
a, L
dAll bigger, be exactly the sight of turning on light in both sides like this.
Above-mentioned formula (3) has retrained minimum and maximum high bright lamp numbers.When the speed of a motor vehicle was very slow, abs (t [i]-t [i+1]) and abs (t [i]-t [i-1]) were bigger, cause the L that calculates
aOr L
bLess, lamp that can not be very little at vehicle/pedestrian advancing direction in the reality is so done constraint to the bright lamp number of minimum height.In like manner, when the speed of a motor vehicle is very fast, the bright lamp number of maximum height has been done constraint.
Compare the above-mentioned lamp algorithm that lightens, the dim lights algorithm is comparatively simple.Letting light signal delay a period of time of each Gao Liang dim then gets final product.For what each lightened a counter is set in street-level control centre 3, unit interval of the every mistake of the value of counter subtracts 1, when the value of the corresponding counter of certain lamp is 0, sends to it and to dim downlink data frame.
1.4.3 control algolithm flow chart
Lighten lamp algorithm and dim lights algorithm flow chart and see accompanying drawing 10, accompanying drawing 11 respectively.
Claims (4)
1. the control method of an energy-conservation street lamp brightness on-demand dynamic adjusting system; It is characterized in that: this system is made up of equipment on the lamp (1), data communication channel (2), street-level control centre (3), public data communication channel (4), city-level server (5); Connect through data communication channel (2) by data communication module (10) between equipment on the lamp (1) and the street-level control centre (3); Street-level control centre (3) is connected through public data communication channel (4) by public data channel interface (16) with city-level server (5); Equipment on the lamp (1) is made up of light source (6), brightness regulation module (7), voltage/current measurement module (8), emergency call button (9), data communication module (10), microcontroller (11), EEPROM and system parameters configuration interface (12), vehicle/pedestrian detection module (13), display module (14); Street-level control centre (3) is made up of data communication module (10), calculate platform (15), public data communication channel interface (16), and city-level server (5) is made up of computer (17) and public data communication channel interface (16);
The high bright lamp number that this system sets up is following with control method and operating procedure that movement velocity changes:
A. every do not have the road of bifurcated all to be abstracted into straight line model, and each street lamp post is installed equipment (1) on a cover lamp, and number consecutively when mounted, and each street-level control centre (3) is responsible for an abstract straight road;
B. detect when in the road width W, object being arranged as the vehicle/pedestrian detection module (13) of equipment on the lamp (1); The data communication module (10) of equipment on the lamp (1) just send one be loaded with detect vehicle/pedestrian uplink data frames to street-level control centre (3), the record of equipment (1) uplink data frames time of advent on this lamp refreshes in street-level control centre (3);
C. street-level control centre (3) detects vehicle/pedestrian's time value according to equipment on the lamp (1); The high bright lamp number of vehicle/pedestrian's direction of motion both sides is calculated, and then send downlink data frame through data communication module (10) lamp of equipment (1) on the corresponding lamp is lightened;
D. let light signal delay a period of time of each Gao Liang dim then; Equipment (1) is provided with a counter on the lamp at the lamp place that street-level control centre (3) lightens for each; Unit interval of the every mistake of the value of counter subtracts 1; When the value of certain counter was 0, equipment (1) sent and dims downlink data frame on its corresponding lamp.
2. according to the control method of the said energy-conservation street lamp brightness on-demand dynamic adjusting system of claim 1, it is characterized in that,, adopt following steps in order to realize remote centralized charging, operational monitoring, controlled function:
Voltage/current measurement module (8) records voltage, electric current; Microcontroller (11) utilizes voltage, electric current to calculate energy consumption;
And send to street-level control centre (3) to equipment (1) numbering on these data and this lamp through data communication module (10); Street-level control centre (3) sends to city-level server (5) to equipment (1) numbering, this street-level control centre (3) numbering on the voltage that receives, electric current, energy consumption and the lamp through public data communication channel interface (16); City-level server (5) is confirmed position, energy consumption and the running status of equipment on the lamp (1) according to these numberings and data.
3. according to the control method of the said energy-conservation street lamp brightness on-demand dynamic adjusting system of claim 1, it is characterized in that,, adopt following steps in order to realize magnitude of traffic flow statistics and the function of dredging:
Equipment (1) numbering sends to street-level control centre (3) on the information that microcontroller (11) detects vehicle/pedestrian to vehicle/pedestrian detection module (13) through data communication module (10) and this lamp; Street-level control centre (3) utilizes the frequency that detects vehicle/pedestrian to estimate the magnitude of traffic flow; Send to city-level server (5) to equipment (1) numbering, this street-level control centre (3) numbering on the flow of estimation and the lamp through public data communication channel interface (16); City-level server (5) is realized the traffic flow quantitative statistics according to the position of equipment (1) on the definite lamp of these numberings; City-level server (5) is sent to equipment (1) near the lamp these highway sections to the magnitude of traffic flow statistical information in some highway sections again; And in upward demonstration of display module (14).
4. the control method of a kind of energy-conservation brightness on-demand dynamic adjusting system according to claim 1 is characterized in that, in order to realize the emergency call function, adopts following steps:
Microcontroller (11) detects the interrupt signal that emergency call button (9) sends; Send to street-level control centre (3) to equipment (1) numbering on this signal and this lamp through data communication module (10); Street-level control centre (3) sends to city-level server (5) to equipment (1) numbering, this street-level control centre (3) numbering on this signal and the lamp through public data communication channel interface (16); City-level server (5) is according to the position of equipment (1) on the definite lamp of these numberings, and then the position of definite emergency generation.
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