CN109429407A - A kind of street lamp perseverance illumination single-lamp controller - Google Patents
A kind of street lamp perseverance illumination single-lamp controller Download PDFInfo
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- CN109429407A CN109429407A CN201710754853.8A CN201710754853A CN109429407A CN 109429407 A CN109429407 A CN 109429407A CN 201710754853 A CN201710754853 A CN 201710754853A CN 109429407 A CN109429407 A CN 109429407A
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The present invention discloses a kind of street lamp perseverance illumination single-lamp controller, it includes the signal acquisition module being made of the illuminance transducer that one or more is placed in below light source side, and the average illumination value for measuring LED street lamp is exported to signal processing and output module；By singlechip group at signal processing and output module, after reading the average illumination value that measures by serial communication, the empty accounting of output 10VPWM signal is adjusted using Digital PID Algorithm to control the illumination of LED street lamp；The wireless communication module being made of NB-IoT communication module, it is communicated by serial communication and signal processing and output module, it is communicated by NB-IoT network and telecommunication server, and telecommunication server is modified and read from light source electricity different in output module ginseng setting to signal processing by NB-IoT network.The present invention can carry out adjusting from the logical output of key light based on variables such as road illumination, LED light source itself light decays, realize the output of lamps and lanterns constant illumination.
Description
Technical field
The invention belongs to street lamp monitoring and control technology field, especially a kind of street lamp perseverance illumination list lamp controls in city illumination
Device processed.
Background technique
Light source product can generate light decay in the life cycle management used, the direct shadow of the light decay of light source in road lighting
Ring to lighting quality it is up to standard whether, for the influence for overcoming light decay to generate road lighting quality, city illumination design in pass through
(light of lamp life final period is logical to be usually set to what initial light led to the mode of increase power and the logical value of raising lamps and lanterns product initial light
70%) to guarantee that road lighting quality meets design requirement in light source life cycle management.Existing LED dimming control technique is only
It can be regulated and controled in preset ratio, and the situation of change of the logical output of light after regulation is not monitored, practical regulation
Effect can not accurately control.Logical reduce of the light for caused by LED itself light decay does not compensate, practical road illumination it is up to standard
There is still a need for manually calibrated for situation.
Technical problem of the existing technology is as follows:
1. (daily after running for a period of time, the LED dimming control technique of current mainstream can only carry out timesharing brightness adjustment control
I.e. the magnitude of traffic flow reduction period is dimmed by a certain percentage at dead of night), it can not be dimmed based on the life cycle management of light source.
The service life of 2.LED light source chip depends on its work section temperature, and operating load is bigger, and the section temperature of LED light source chip is just
Can be higher, for a long time at full capacity or overload operation can accelerate the aging of LED light source chip, reduce the service life of LED lamp.
3. lighting quality is carried out by luminance detection task in city illumination management.If you need to timely, accurate acquisition
The lighting quality situation of road has only by increasing detection cycle and realizes.Moreover, artificial detection road lighting quality time-consuming consumes
Power, is detected that there is also certain security risks in car lane.
4.LED light source due to itself light decay presence, once because LED light source failure is replaced, the light source after replacement is bright
Degree is apparently higher than the longer light source of remaining runing time, causes the uneven of road illumination.
Summary of the invention
To solve defect of the existing technology, the present invention provides a kind of street lamp perseverance illumination single-lamp controller, can be based on
The variables such as itself light decay of road illumination, LED light source adjust from the logical output of key light, realize the output of lamps and lanterns constant illumination.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of street lamp perseverance illumination single-lamp controller, it includes:
The signal acquisition module being made of the illuminance transducer that one or more is placed in below light source side measures LED street lamp
Average illumination value export to signal processing and output module；
By singlechip group at signal processing and output module, after reading the average illumination value that measures by serial communication,
The empty accounting of output 10V pwm signal is adjusted using Digital PID Algorithm to control the illumination of LED street lamp；
The wireless communication module being made of NB-IoT communication module is logical by serial communication and signal processing and output module
News are communicated by NB-IoT network and telecommunication server, and telecommunication server by NB-IoT network to signal at
Reason is modified and is read from light source electrical parameters different in output module setting.
Further, illuminance transducer uses BH1750 sensor.
Further, single-chip microcontroller uses STM32L series monolithic.
Further, the average illumination value of LED street lamp is obtained using following formula (1) conversion,
Wherein, M is illuminance transducer quantity, EiBrightness value is measured for single illuminance transducer.
Further, the output signal of signal processing and output module uses following Digital PID Algorithm formula (2) or formula
(3) it controls,
Or
Wherein, Kp is the proportionality coefficient of PID controller；Ti is the integral coefficient of PID controller；Td is PID controller
Differential coefficient；K is sampling sequence number, k=0,1,2；ukFor the computer output valve of kth time sampling instant；ekFor kth
The deviation of secondary sampling instant input；ek-1For the deviation of -1 sampling instant of kth input；Ki is integral coefficient, Ki=Kp/
Ti；Kd is differential coefficient, Kd=Kp*Td.
The utility model has the advantages that
1. improving the energy-saving benefit of LED lamp
The present invention is controlled due to the provision of accurately illumination, is not only able to realize basic timesharing brightness adjustment control, and
LED light source initial operation stage directly reduces lamps and lanterns energy consumption, is different from conventional products in the initial stage and then provides 30%
The energy saving space further improves the energy-saving effect of LED lamp.
2. extending lamps and lanterns service life
The present invention is due to entering load down operation, the opposite aging for having delayed LED light source chip in initial operation stage
The year light decay rate of lamps and lanterns can be effectively reduced in process, extend lamps and lanterns service life.
3. ensureing lighting quality effect, the Job engagements such as luminance detection are reduced
The present invention is the brightness adjustment control carried out based on road lighting quality, therefore in use being capable of real-time detection road
Road lighting quality situation not only eliminates the Job engagement of artificial detection, and the real-time of data further improves illumination
The precision of management.
4. intelligent adaptation various types of light sources drives parameter, maintenance activities are improved
The present invention can carry out brightness adjustment control according to the light situation on road surface under single-pole street lamp, it is possible to prevente effectively from road surface is shone
The generation of the fact that uneven is spent, while improving energy-efficient performance；Due to LED light source technology progress and different manufacturers for
The demand of driving current, LED light source driving need flexible, adjustable electrical parameter setting to expand the versatility to light source, this
Invention can control the electrical parameter driving demand for setting different light source chips according to system, between adjustment illumination and electrical parameter
Adjustment ratio, and then the versatility of light source can be further increased.
Detailed description of the invention
Fig. 1 is street lamp perseverance illumination single-lamp controller functional block diagram of the present invention；
Illuminance transducer placement location figure when Fig. 2 is present invention measurement integrated-type light source；
Fig. 3 is the top view of Fig. 2；
Illuminance transducer placement location figure when Fig. 4 is present invention measurement stand alone type or light bar type light source；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is conventional simulation PID control system schematic diagram.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
A kind of street lamp perseverance illumination single-lamp controller of the present invention, as shown in Figure 1, being mainly made of following three parts, respectively
Signal acquisition module 1, signal processing and output module 2 and wireless communication module 3, in which:
Signal acquisition module 1: the illuminance measurement part being made of one or more BH1750 illuminance transducers 11, usually
Road street lamp illumination is measured by GB/T5700 illumination measurement method, and illuminance transducer 11 is placed in road surface；If needed real-time
Measurement, then because the factors such as road vehicle passage are infeasible.The present invention senses one or more illumination according to different light source types
Device 11 is placed in below light source side, as shown in Figure 2,3, the placement location of illuminance transducer 11 when to measure integrated-type light source 41, and such as
Fig. 4, shown in 5, the placement location of illuminance transducer 11 when for measurement stand alone type or light bar type light source 42.Because light source output is not
Become, so the position shown in Fig. 2,3 measures brightness value with the brightness value that measures on road surface into certain mathematical relationship, road can be conversed
Face brightness value.It measures average illumination and uses following formula (1):
Wherein: M is illuminance transducer quantity；EiBrightness value is measured for single illuminance transducer.
Signal processing and output module 2: being made of STM32L series monolithic, exports 10V pulsewidth modulation (PWM) signal.
Wireless communication module 3: it by NB-IoT network, is communicated using NB-IoT communication module and telecommunication server 5；
By serial communication, communicated using NB-IoT communication module and signal processing and output module 2.
As shown in Figure 1, the working principle of the invention is: the BH1750 illuminance transducer of signal acquisition module 1 passes through light
Acquisition, measures the average illumination value of LED street lamp 4；The STM32L series monolithic of signal processing and output module 2 passes through adjusting
The duty ratio of 10VPWM signal controls the illumination of LED street lamp 4, and single-chip microcontroller reads the average illumination value measured by serial communication
Afterwards, according to the average illumination value measured, output control signal is adjusted using Digital PID Algorithm, closed-loop control is formed, makes the road LED
The illumination of lamp 4 is stablized in setting value.Telecommunication server 5 can be by wireless communication module 3 to signal processing and output mould
Different light source type electrical parameters, which are arranged, in block 2 operation such as modifies and reads.
Conventional simulation PID control system schematic diagram is as shown in Figure 6.The system is made of PID controller and controlled device.Its
In,
R (t) is given value, and y (t) is the real output value of system, and given value and real output value constitute control deviation e
(t)=r (t)-y (t)；
The control law of PID controller is
Wherein: the proportionality coefficient of Kp-- controller；
The time of integration of Ti-- controller, also referred to as integral coefficient；
The derivative time of Td-- controller, also referred to as differential coefficient.
Since the present invention makes to computerized control, transformation appropriate is carried out to the PID control rule of formula (4), use is soft
Part realizes PID control, i.e. position model digital IIR filters.
Or
Wherein: k-- sampling sequence number, k=0,1,2；
uk-- the computer output valve of kth time sampling instant；
ek-- the deviation of kth time sampling instant input；
ek-1-- the deviation of -1 sampling instant of kth input；
Ki-- integral coefficient, Ki=Kp/Ti；
Kd-- differential coefficient, Kd=Kp*Td；
Incremental timestamp algorithmic formula can be obtained by transformation:
Wherein:
Then, the formula of incremental timestamp algorithm are as follows:
uk=uk-1+Aek-Bek-1+Cek-2 (5)
Algorithm is realized using C language.
In conclusion permanent illumination control is the monitoring and adjustment carried out from the most fundamental road lighting quality, in conjunction with LED
Some technical characterstics of light source efficiently solve the adjustment of current conventional controller electricity ginseng detect with lighting quality separate after generate
Problems not only provide the bigger energy saving space, extend the service life of LED product, and related management work can be made anti-
Should be rapider, more intelligent, the fineness of work can be effectively improved.
Limiting the scope of the invention, those skilled in the art should understand that, in technical solution of the present invention
On the basis of, the various modifications or variations that can be made by those skilled in the art with little creative work still of the invention
Within protection scope.
Claims (5)
1. a kind of street lamp perseverance illumination single-lamp controller, which is characterized in that it includes:
The signal acquisition module (1) being made of the illuminance transducer (11) that one or more is placed in below light source side measures the road LED
The average illumination value of lamp (4) is exported to signal processing and output module (2)；
By singlechip group at signal processing and output module (2) adopted after reading the average illumination value that measures by serial communication
The empty accounting of output 10V pwm signal is adjusted with Digital PID Algorithm to control the illumination of LED street lamp (4)；
The wireless communication module (3) being made of NB-IoT communication module passes through serial communication and signal processing and output module (2)
Communication is communicated by NB-IoT network and telecommunication server (5), and telecommunication server (5) passes through NB-IoT network
Signal processing is modified and read from light source electrical parameters different in output module (2) setting.
2. street lamp perseverance illumination single-lamp controller according to claim 1, which is characterized in that the illuminance transducer uses
BH1750 sensor.
3. street lamp perseverance illumination single-lamp controller according to claim 1, which is characterized in that the single-chip microcontroller uses STM32L
Series monolithic.
4. street lamp perseverance illumination single-lamp controller according to claim 1, which is characterized in that LED street lamp (4) are averaged
Brightness value is converted using following formula (1) and is obtained,
Wherein, M is illuminance transducer quantity, EiBrightness value is measured for single illuminance transducer.
5. street lamp perseverance illumination single-lamp controller according to claim 1, which is characterized in that the signal processing and output mould
The output signal of block (2) is controlled using following Digital PID Algorithm formula (2) or formula (3),
Or
Wherein, Kp is the proportionality coefficient of PID controller；Ti is the integral coefficient of PID controller；Td is the differential of PID controller
Coefficient；K is sampling sequence number, k=0,1,2；ukFor the computer output valve of kth time sampling instant；ekIt is adopted for kth time
The deviation of sample moment input；ek-1For the deviation of -1 sampling instant of kth input；Ki is integral coefficient, Ki=Kp/Ti；Kd
For differential coefficient, Kd=Kp*Td.
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| CN201710754853.8A CN109429407A (en) | 2017-08-29 | 2017-08-29 | A kind of street lamp perseverance illumination single-lamp controller |
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| CN201710754853.8A CN109429407A (en) | 2017-08-29 | 2017-08-29 | A kind of street lamp perseverance illumination single-lamp controller |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248452A (en) * | 2019-06-10 | 2019-09-17 | 海洋王（东莞）照明科技有限公司 | A kind of explosion-proof lamp control circuit and system |
| CN111132422A (en) * | 2019-12-10 | 2020-05-08 | 中移（杭州）信息技术有限公司 | Tunnel management method, device and system |
| CN112333902A (en) * | 2020-09-25 | 2021-02-05 | 深圳星标科技股份有限公司 | Visual navigation aid equipment dimming method and related device |
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| CN103796374A (en) * | 2012-11-05 | 2014-05-14 | 连工光通（大连）照明科技有限公司 | LED illumination control system |
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2017
- 2017-08-29 CN CN201710754853.8A patent/CN109429407A/en active Pending
Patent Citations (4)
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| KR101183359B1 (en) * | 2012-04-13 | 2012-09-14 | 군산대학교산학협력단 | Dimming control system for street lighting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110248452A (en) * | 2019-06-10 | 2019-09-17 | 海洋王（东莞）照明科技有限公司 | A kind of explosion-proof lamp control circuit and system |
| CN111132422A (en) * | 2019-12-10 | 2020-05-08 | 中移（杭州）信息技术有限公司 | Tunnel management method, device and system |
| CN112333902A (en) * | 2020-09-25 | 2021-02-05 | 深圳星标科技股份有限公司 | Visual navigation aid equipment dimming method and related device |
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