CN103216771B - Light-emitting diode (LED) street lamp based on wireless sensor network and temperature adjustment method of same - Google Patents
Light-emitting diode (LED) street lamp based on wireless sensor network and temperature adjustment method of same Download PDFInfo
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- CN103216771B CN103216771B CN201310150134.7A CN201310150134A CN103216771B CN 103216771 B CN103216771 B CN 103216771B CN 201310150134 A CN201310150134 A CN 201310150134A CN 103216771 B CN103216771 B CN 103216771B
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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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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
Disclosed is a light-emitting diode (LED) street lamp based on a wireless sensor network and a temperature adjustment method of the LED street lamp based on the wireless sensor network. The LED street lamp based on the wireless sensor network and the temperature adjustment method of the LED street lamp based on the wireless sensor network is suitable for public lighting of both sides of a street, and comprises an LED street lamp body. A temperature sensor is installed inside the LED street lamp body; an air velocity sensor is installed outside the LED street lamp body; ARM 9 single chip microcomputers are respectively connected on the temperature sensor and the air velocity sensor through an analog / digital (A/D) converter; a power adjustment module and an RS232 interface are respectively connected on the ARM 9 micro control unit; the power adjustment module is connected with the LED street lamp body; a sensor node is connected on the RS232 interface; the sensor node comprises the micro control unit connected with the RS232; and a wireless chip and a PCB antenna are sequentially connected on the micro control unit. The LED street lamp based on the wireless sensor network is simple in structure and long in service life.
Description
Technical field
The present invention relates to a kind of intelligent LED street lamp based on wireless sensor network and regulate temperature methods, being particularly useful for the public illumination of road both sides and using.
Technical background
Street lamp is the important component part of city illumination, and traditional street lamp often adopts high-pressure mercury lamp, but its light loss causes greatly the huge waste of the energy.Current, global environment is going from bad to worse, and each state is all at development clean energy resource.And along with the rapid growth of national economy, China's energy supply and demand contradiction is outstanding day by day, supply of electric power comes into existence the situation of critical shortage, and energy-conservation is current institute urgent problem.Therefore, development of new is efficient, energy-conservation, the life-span is long, colour rendering index is high, the LED street lamp of environmental protection is of great significance the energy-conservation tool of city illumination.
LED illumination technology, as New Generation Optical source technology, has the features such as energy-saving and environmental protection, the life-span is long, volume is little, can be widely used in the fields such as various instruction, display, decoration, backlight, general lighting and urban landscape.
But the theoretical life-span of LED bulb is the test data in certain temperature range, and the heat that the LED lamp tube of dense arrangement is distributed in luminescence process is huge.When occurring overheated, the LED life-span can significantly reduce, and easily sudden damage occurs.And when temperature is too high, LED light declines and can increase, and brightness can reduce.Experiment proves: when temperature is more than 60 degrees Celsius, LED operating temperature often rises 5 degree, and LED light declines can increase by 10%, and under normal circumstances, LED operating temperature should control below 60 degrees Celsius, guarantee service life of more than 50,000 hours.Therefore, how to reduce node temperature and just become the key ensureing the LED light source reliably working life-span.
At present, domestic and international LED street lamp adopts the lamp housing of conventional street lamp to convert substantially, and for this reason, someone proposes on lamp housing, add heat sink and goes out LED lamp tube to be produced hot Quick diffusing, thus reaches the effect of protection LED street lamp.But being subject to the restriction of streetlamp housing body volume, the volume for LED radiator can not be very large, therefore heat conductivility is low, and the heat that LED light source produces can not directly be derived by lamp housing fast.Also have some to propose and adopt temperature sensor monitors LED bulb temperature, thus the input power of control LED, to reach the object controlling LED temperature in real time.If but adjacent several street lamps temperature is too high at one time, so namely easily occur that certain stretch continues dark, the normal operation of traffic can be had a strong impact on like this, also increase the incidence of accident simultaneously.And due to affected by environment, the particularly impact of wind speed, temperature sensor is actual, and to record temperature on the low side, thus well can not play the effect of protection LED chip.
Summary of the invention
Goal of the invention: for the deficiencies in the prior art, there is provided a kind of can not only Real-Time Monitoring and control the duty of single led street lamp, and coordinate the intelligent LED street lamp based on wireless sensor network of the duty between each street lamp by wireless sensor network and regulate temperature methods.
Technical scheme: in order to realize foregoing invention object, the technical solution adopted in the present invention is:
It comprises LED street lamp lamp body, in described LED street lamp lamp body, temperature sensor is installed, outside LED street lamp lamp body, air velocity transducer is installed, described temperature sensor and air velocity transducer are connected with ARM9 single-chip microcomputer respectively by A/D converter, ARM9 single-chip microcomputer is connected to power conditioning module and RS232 interface, power conditioning module is connected with LED street lamp lamp body, RS232 interface is connected with sensor node, described sensor node comprises the single-chip microcomputer be connected with RS232 interface, and single-chip microcomputer has been linked in sequence wireless chip and PCB antenna.Described single-chip microcomputer model is MSP43F1611, and wireless chip model is CC2420.
Based on an adjustment temperature methods for the intelligent LED street lamp of wireless sensor network, comprise the steps:
A. set temperature preset value, the preset value pre-setting LED street lamp temperature according to service condition is T
1and T
2, wherein preset value T
1for the highest critical value that LED street lamp normally works, preset value T
2for the maximum temperature value that street lamp after lowering the temperature starts again;
B.LED street lamp unlatching work, temperature sensor and air velocity transducer detect the temperature of LED street lamp and the wind speed of surrounding simultaneously, and Detection Information is sent to ARM9 single-chip microcomputer respectively by A/D converter, the temperature information received and wind speed information are compensated measuring and calculating by ARM9 single-chip microcomputer, obtain the temperature corrected value of LED street lamp, ARM9 single-chip microcomputer is by temperature corrected value and preset value T
1compare, if measuring tempeature correction value is lower than preset value T
1time, then ARM9 single-chip microcomputer sends return instruction, and control temperature sensor and air velocity transducer detect the temperature of LED street lamp and surrounding wind speed again;
C. the electric current set when LED street lamp normally works is first mode, and half electric current when setting LED street lamp normally works is the second pattern, and when setting LED street lamp normally works, 1/3rd electric currents are the 3rd pattern,
When the temperature corrected value of this LED street lamp of ARM9 microprocessor detect of certain LED street lamp is higher than preset value T
1time, this ARM9 single-chip microcomputer reads the temperature-status data of three adjacent with relative LED street lamp by sensor node, if when adjacent with relative three LED street lamp are all operated in first mode, this ARM9 Single-chip Controlling power conditioning module closes this LED street lamp, lowers the temperature;
When adjacent with relative LED street lamp is all operated in the second pattern, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the 3rd pattern, lowers the temperature;
When having street lamp to be operated in the 3rd pattern in adjacent with relative LED street lamp, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the second pattern, lowers the temperature;
D. lower the temperature after half an hour, the temperature corrected value of this LED street lamp current extrapolated by this ARM9 single-chip microcomputer by temperature sensor and air velocity transducer, and judges that whether temperature corrected value is lower than preset value T
2if, lower than preset value T
2, then this ARM9 Single-chip Controlling LED street lamp reopens and this LED street lamp is normally worked; Otherwise continue recycle ratio and comparatively calculate temperature corrected value and preset value T
2, until measuring and calculating temperature corrected value is lower than preset value T
2opening this LED street lamp again makes it normally work.
Beneficial effect: the intelligent LED street lamp based on wireless sensor network of the design and adjustment temperature methods, be provided with and be arranged on temperature sensor in LED street lamp and air velocity transducer, by measuring the Current Temperatures of LED street lamp, single-chip microcomputer can calculate temperature corrected value according to air velocity transducer simultaneously, according to this status adjustment input power, thus LED street lamp is protected; LED street lamp is provided with wireless sensor node, can intercom mutually between each LED street lamp, and obtain the working condition of periphery LED street lamp, when single led street lamp temperature is too high, control unit can according to the input power of the suitable adjustment LED of the LED street lamp duty of periphery, when street lamp is operated in first mode, then close this street lamp around; When around street lamp is operated in second level pattern entirely, then adjusts this street lamp input power and make it be operated in the 3rd pattern, make its fast cooling; When surrounding has street lamp to be operated in the 3rd pattern, then adjust this street lamp input power and make it be operated in the second pattern, street lamp can be made to lower the temperature and can ensure again illumination.Adopt the life-span that can not only ensure single LED street lamp in this way like this, also can ensure the normal operation of whole LED street lamp system simultaneously.
Accompanying drawing explanation
Fig. 1 is the road lamp system Principle of Communication figure of stretch
Fig. 2 is sensor node schematic diagram
Fig. 3 is the theory diagram of single street lamp
Fig. 4 is the program flow diagram of street lamp Intelligent adjustment power
detailed description of the invention:
Below in conjunction with figure, specific embodiment of the invention scheme is described:
As shown in Figure 1, each LED street lamp lamp body shell is equipped with a wireless sensor node, forms the sensor network of road lamp system thus.Because the illumination of single street lamp clinodiagonal street lamp is very little on its impact, therefore do not consider their impacts on this street lamp, each LED street lamp only communicates with the sensor node in two LED street lamp of homonymy around it and a LED street lamp on opposite, such as, for LED street lamp in figure 2, do not consider LED street lamp 5, 7 impacts on it, and only consider adjacent LED street lamp 1, LED street lamp 3, LED street lamp 5 is on its impact, also namely sensor node 2 only with adjacent sensor node 1, sensor node 2, communicate between sensor node 3, obtain LED street lamp 1, LED street lamp 3, the duty that LED street lamp 5 is current.By distributing unique No. ID to each sensor node, the selective communication between sensor node can be realized.First judge that when wireless sensor node receives the packet that other nodes send whether node ID number inside packet is No. ID of adjacent node, if it is the useful information inside read data packet is also transferred to control unit, if not then abandoning this packet.
As shown in Figures 2 and 3, intelligent LED street lamp based on wireless sensor network of the present invention comprises LED street lamp lamp body, it is characterized in that: in described LED street lamp lamp body, temperature sensor is installed, outside LED street lamp lamp body, air velocity transducer is installed, described temperature sensor and air velocity transducer are connected with ARM9 single-chip microcomputer respectively by A/D converter, ARM9 single-chip microcomputer is connected to power conditioning module and RS232 interface, power conditioning module is connected with LED street lamp lamp body, RS232 interface is connected with sensor node, described sensor node comprises the single-chip microcomputer be connected with RS232 interface, single-chip microcomputer has been linked in sequence wireless chip and PCB antenna, described single-chip microcomputer model is MSP43F1611, wireless chip model is CC2420, wherein, wireless chip CC2420 and PCB antenna are used for communicating with between other wireless sensor nodes, receive the work state information of contiguous street lamp, and this information are stored, MSP430F1611 single-chip microcomputer then reads the duty of this street lamp by RS232 interface, then by the work state information of this street lamp and self ID number packing, sent by CC2420 and PCB antenna.
RS232 interface sends to the wireless sensor node on this street lamp for the duty that LED street lamp is current.Temperature sensor and air velocity transducer measure the temperature of current LED street lamp and the wind speed of environment respectively; Wind speed due to current environment can have influence on the accuracy of the temperature value of temperature sensor measurement, on street lamp, therefore installs an air velocity transducer again to measure current wind speed.Temperature sensor and air velocity transducer measure current temperature value and wind speed respectively, then digital data transmission is converted to single-chip microcomputer through analog-digital converter, single-chip microcomputer goes out the impact of wind speed on temperature according to the program computation finished writing, then according to this impact, the temperature value measured is compensated, obtain the correction value of Current Temperatures, then by correction value and preset temperature value T
1compare, control according to temperature the input power that power conditioning module reduces corresponding LED.
As shown in Figure 4, a kind of adjustment temperature methods of the intelligent LED street lamp based on wireless sensor network, comprises the steps:
A. set temperature preset value, the preset value pre-setting LED street lamp temperature according to service condition is T
1and T
2, wherein preset value T
1for the highest critical value that LED street lamp normally works, preset value T
2for the maximum temperature value that street lamp after lowering the temperature starts again;
B.LED street lamp unlatching work, temperature sensor and air velocity transducer detect the temperature of LED street lamp and the wind speed of surrounding simultaneously, and Detection Information is sent to ARM9 single-chip microcomputer respectively by A/D converter, the temperature information received and wind speed information are compensated measuring and calculating by ARM9 single-chip microcomputer, obtain the temperature corrected value of LED street lamp, ARM9 single-chip microcomputer is by temperature corrected value and preset value T
1compare, if measuring tempeature correction value is lower than preset value T
1time, then ARM9 single-chip microcomputer sends return instruction, and control temperature sensor and air velocity transducer detect the temperature of LED street lamp and surrounding wind speed again;
C. the electric current set when LED street lamp normally works is first mode, and half electric current when setting LED street lamp normally works is the second pattern, and when setting LED street lamp normally works, 1/3rd electric currents are the 3rd pattern,
When the temperature corrected value of this LED street lamp of ARM9 microprocessor detect of certain LED street lamp is higher than preset value T
1time, this ARM9 single-chip microcomputer reads the temperature-status data of three adjacent with relative LED street lamp by sensor node, if when adjacent with relative three LED street lamp are all operated in first mode, this ARM9 Single-chip Controlling power conditioning module closes this LED street lamp, lowers the temperature;
When adjacent with relative LED street lamp is all operated in the second pattern, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the 3rd pattern, lowers the temperature;
When having street lamp to be operated in the 3rd pattern in adjacent with relative LED street lamp, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the second pattern, lowers the temperature;
D. lower the temperature after half an hour, the temperature corrected value of this LED street lamp current extrapolated by this ARM9 single-chip microcomputer by temperature sensor and air velocity transducer, and judges that whether temperature corrected value is lower than preset value T
2if, lower than preset value T
2, then this ARM9 Single-chip Controlling LED street lamp reopens and this LED street lamp is normally worked; Otherwise continue recycle ratio and comparatively calculate temperature corrected value and preset value T
2, until measuring and calculating temperature corrected value is lower than preset value T
2opening this LED street lamp again makes it normally work.
Claims (1)
1. the intelligent LED street lamp based on wireless sensor network, comprise LED street lamp lamp body, it is characterized in that: in described LED street lamp lamp body, temperature sensor is installed, outside LED street lamp lamp body, air velocity transducer is installed, described temperature sensor and air velocity transducer are connected with ARM9 single-chip microcomputer respectively by A/D converter, ARM9 single-chip microcomputer is connected to power conditioning module and RS232 interface, power conditioning module is connected with LED street lamp lamp body, RS232 interface is connected with sensor node, described sensor node comprises the single-chip microcomputer be connected with RS232 interface, single-chip microcomputer has been linked in sequence wireless chip and PCB antenna, described single-chip microcomputer model is MSP43F1611, and wireless chip model is CC2420.
2. use the adjustment temperature methods based on the intelligent LED street lamp of wireless sensor network described in claim 1, it is characterized in that, comprise the steps:
A. set temperature preset value, the preset value pre-setting LED street lamp temperature according to service condition is T
1and T
2, wherein preset value T
1for the highest critical value that LED street lamp normally works, preset value T
2for the maximum temperature value that street lamp after lowering the temperature starts again;
B.LED street lamp unlatching work, temperature sensor and air velocity transducer detect the temperature of LED street lamp and the wind speed of surrounding simultaneously, and Detection Information is sent to ARM9 single-chip microcomputer respectively by A/D converter, the temperature information received and wind speed information are compensated measuring and calculating by ARM9 single-chip microcomputer, obtain the temperature corrected value of LED street lamp, ARM9 single-chip microcomputer is by temperature corrected value and preset value T
1compare, if measuring tempeature correction value is lower than preset value T
1time, then ARM9 single-chip microcomputer sends return instruction, and control temperature sensor and air velocity transducer detect the temperature of LED street lamp and surrounding wind speed again;
C. the electric current set when LED street lamp normally works is first mode, and half electric current when setting LED street lamp normally works is the second pattern, and when setting LED street lamp normally works, 1/3rd electric currents are the 3rd pattern,
When the temperature corrected value of this LED street lamp of ARM9 microprocessor detect of certain LED street lamp is higher than preset value T
1time, this ARM9 single-chip microcomputer reads the temperature-status data of three adjacent with relative LED street lamp by sensor node, if when adjacent with relative three LED street lamp are all operated in first mode, this ARM9 Single-chip Controlling power conditioning module closes this LED street lamp, lowers the temperature;
When adjacent with relative LED street lamp is all operated in the second pattern, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the 3rd pattern, lowers the temperature;
When having street lamp to be operated in the 3rd pattern in adjacent with relative LED street lamp, this ARM9 Single-chip Controlling power conditioning module reduces input current, makes this LED street lamp be operated in the second pattern, lowers the temperature;
D. lower the temperature after half an hour, the temperature corrected value of this LED street lamp current extrapolated by this ARM9 single-chip microcomputer by temperature sensor and air velocity transducer, and judges that whether temperature corrected value is lower than preset value T
2if, lower than preset value T
2, then this ARM9 Single-chip Controlling LED street lamp reopens and this LED street lamp is normally worked; Otherwise continue recycle ratio and comparatively calculate temperature corrected value and preset value T
2, until measuring and calculating temperature corrected value is lower than preset value T
2opening this LED street lamp again makes it normally work.
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| CN201310150134.7A CN103216771B (en) | 2013-04-26 | 2013-04-26 | Light-emitting diode (LED) street lamp based on wireless sensor network and temperature adjustment method of same |
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| CN201310150134.7A CN103216771B (en) | 2013-04-26 | 2013-04-26 | Light-emitting diode (LED) street lamp based on wireless sensor network and temperature adjustment method of same |
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| CN104061501A (en) * | 2014-07-21 | 2014-09-24 | 江苏赛达电子科技有限公司 | Wireless intelligent LED street lamp |
| CN109275219A (en) * | 2017-07-18 | 2019-01-25 | 吕朝妮 | Intelligent LED street lamp and adjusting temperature methods based on wireless sensor network |
| CN112594576A (en) * | 2020-12-21 | 2021-04-02 | 南京弹正电子科技有限公司 | Intelligent illuminating system for underground roadway of non-coal mine |
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| CN101511143A (en) * | 2009-03-25 | 2009-08-19 | 广东昭信光电科技有限公司 | High-power led wireless intelligent control system |
| KR20120126965A (en) * | 2011-05-13 | 2012-11-21 | 주식회사 포유 | Sensibility lighting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7983685B2 (en) * | 2006-12-07 | 2011-07-19 | Innovative Wireless Technologies, Inc. | Method and apparatus for management of a global wireless sensor network |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511143A (en) * | 2009-03-25 | 2009-08-19 | 广东昭信光电科技有限公司 | High-power led wireless intelligent control system |
| KR20120126965A (en) * | 2011-05-13 | 2012-11-21 | 주식회사 포유 | Sensibility lighting system |
Non-Patent Citations (3)
| Title |
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| 基于STC单片机的大功率LED灯的控制实现;谷爱昱等;《实验室科学》;20121031;第15卷(第5期);第50－52页 * |
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