CN107196332A - A kind of rural area distributed photovoltaic O＆M device - Google Patents
A kind of rural area distributed photovoltaic O＆M device Download PDFInfo
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- CN107196332A CN107196332A CN201710406800.7A CN201710406800A CN107196332A CN 107196332 A CN107196332 A CN 107196332A CN 201710406800 A CN201710406800 A CN 201710406800A CN 107196332 A CN107196332 A CN 107196332A
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- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 238000004891 communication Methods 0.000 claims abstract description 33
- 230000002159 abnormal effect Effects 0.000 claims abstract description 18
- 241001513371 Knautia arvensis Species 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- 230000006870 function Effects 0.000 claims description 16
- 238000003825 pressing Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 claims 1
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H02J13/0075—
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Power Engineering (AREA)
- Photovoltaic Devices (AREA)
Abstract
Proposed by the present invention is a kind of rural area distributed photovoltaic O＆M device.The side of photovoltaic O＆M device is equipped with GPRS communications conduits and voice message loudspeaker, LCD display is housed before photovoltaic O＆M device, on the right side of LCD display equipped with blueness cleaning indicator lamp and red abnormal alarm indicator lamp, orange button photovoltaic teaching button is respectively provided with the bottom of photovoltaic O＆M device panel, blue buttons photovoltaic cleans ACK button, and red button photovoltaic reports button and dark buttons changing interface button extremely.The O＆M device page display information of the present invention is concisely clear；Possess tutorial function, the degree of awareness of the peasant household to photovoltaic generation can be improved；Polychrome button confirms that function is simply easily recognized, and is easy to peasant household to be learnt and operated；Sound prompt function enough grasps user and performs the demand of photovoltaic O＆M.Suitably as the apparatus and method application of rural area photovoltaic generation operation and maintenance.
Description
Technical field
The present invention relates to distributed photovoltaic power generation, specifically a kind of rural area distributed photovoltaic O＆M device.
Background technology
The new energy that distributed photovoltaic power generation is promoted mainly by the advantage such as environmental protection, lossless, pollution-free as 21st century
Country and the active support of the government and support on policy are obtained, State Council puts into effect for 2013《On promoting photovoltaic industry health hair
Some opinions of exhibition》, National Development and Reform Committee issues《On playing the notice that lever of price effect promotes photovoltaic industry to develop in a healthy way》、
National Energy Board《Notice on further implementing distributed photovoltaic power generation relevant policies》, policy of the Ministry of Finance to photovoltaic generation
Property subsidy have also been made clear stipulaties, the leader State Grid Corporation of China promoted as new energy has formulated a series of technologies rule
Journey, job specification and management system, establish complete distributed power source accept, it is grid-connected, running and clearing system, be rural area light
Road has been paved in the popularization and application of volt.
But be that most villager is not high to the awareness of photovoltaic generation in rural area the problem of exist.For poverty alleviation
Project, it is contemplated that Cost Problems, distributed photovoltaic does not match remote monitoring system typically, lacks and regularly checks, cleans, repairing
Work.If things go on like this, when equipment breaks down or there are power generation issues, in the very first time or it can not all have soon found that,
Can not in time go to check and remover apparatus is the problem of exist, economic loss is caused to photovoltaic peasant household and investor, gene-ration revenue without
Method ensures that the photovoltaic life-span can also have a greatly reduced quality.
Therefore the construction to rural area photovoltaic is played positive propulsion and made by intelligentized rural area distributed photovoltaic O＆M device
With.
The content of the invention
In order to realize the operation and maintenance of photovoltaic generation, the present invention proposes a kind of rural area distributed photovoltaic O＆M device.
The device is run by the design of O＆M device with operation, solves the technical problem of photovoltaic generation operation and maintenance.
It is of the present invention to solve the problems, such as that used scheme is：
PV photovoltaic panels are connected by photovoltaic DC-to-AC converter and bidirectional measuring ammeter with public electric wire net circuit, and photovoltaic DC-to-AC converter passes through
RS485 communications conduits input to photovoltaic O＆M device, and input to investor's monitoring terminal by GPRS communications conduits.
The side of photovoltaic O＆M device is equipped with GPRS communications conduits and voice message loudspeaker, before photovoltaic O＆M device
Face is equipped with LCD display, on the right side of LCD display equipped with blueness cleaning indicator lamp and red abnormal alarm indicator lamp, in light
The bottom of volt O＆M device panel is respectively provided with orange button photovoltaic teaching button, and blue buttons photovoltaic cleaning ACK button is red
Color button photovoltaic reports button and dark buttons changing interface button extremely.
The photovoltaic teaching button be orange button, photovoltaic cleaning ACK button be blue buttons, photovoltaic report extremely by
Button is red button and changing interface button is dark buttons.
Photovoltaic teaching is connected with by I/O data communication channels respectively on photovoltaic O＆M device main control chip STM32F407
Button, photovoltaic cleaning ACK button, photovoltaic reports button and changing interface button extremely.And connected by I/O data communication channel
LCD display and SD card are connected to, is also connected with each other by RS232 communications conduits and GPRS communication channels module, passes through I2S and language
Sound prompting loudspeaker is connected with each other.Blueness cleaning indicator lamp and red abnormal alarm are also connected with by I/O on main control chip
Indicator lamp.
Concrete operations：
A kind of rural area distributed photovoltaic O＆M device, possesses essential information display function, photovoltaic knowledge teaching model function, equipment
Abnormal alarm function, photovoltaic panel cleaning sound prompt function.
LCD display, the basic O＆M information for showing photovoltaic system, comprising 3 class boundary faces, wherein two groups are photovoltaic and transport
Row interface, one group is demonstration teaching interface.System default shows first group of photovoltaic runnable interface, can be at two groups by dark buttons
Switched between photovoltaic runnable interface.The basic operation information of first interface display photovoltaic, including photovoltaic plate temperature, meteorological letter
Breath, commissioning date, cleaning day statistics, photovoltaic daily generation and generating total amount.Second contact surface shows photovoltaic operation electric quantity information,
Including input voltage, electric current, power；Output voltage, electric current, power information.By pressing orange button, it can be run from photovoltaic
Changing interface is to distributed photovoltaic demonstration teaching interface, by the effect of each module, normal shape in photovoltaic system in interface of imparting knowledge to students
State, application notice, clean method and O＆M mode are shown in the animation form being easily understood, while being raised by voice message
Sound device is explained to peasant household.Photovoltaic runnable interface can be returned to by pressing dark buttons.
A kind of rural area distributed photovoltaic O＆M device includes blueness cleaning indicator lamp；Red abnormal alarm indicator lamp；When clear
When the accumulation of clean day was by 30 days, blueness cleaning indicator lamp flashes automatically, at the same in the afternoon 5 when from voice message loudspeaker to peasant household
Cleaning is sent to remind；User presses blue buttons and confirmed, a kind of rural area distributed photovoltaic O＆M device is simultaneously tired by cleaning
Count and reset day, open next cleaning measurement period.Specific cleaning way peasant household can be learnt by teaching interface.
It is red when the photovoltaic operation information that a kind of rural area distributed photovoltaic O＆M device analysis is received has unusual condition
Color anomaly alarm lamp is lighted, while voice message loudspeaker sends alarm sound.User is pressing red button progress
While confirmation, i.e., by GPRS module to one unit exception emergency signals of distal end investor's terminal transmission, make distal end
Investor knows the abnormal information of corresponding distributed photovoltaic equipment as early as possible, and arranges maintenance in time, reduces the investor and peasant household
Economic loss.
Main control chip uses STM32F407 model ARM single-chip microcomputers inside device, is responsible for logical operation, the number of finishing device
The functions such as output are read according to transmitting-receiving process, AV signal.Main control chip STM32F407 passes through I/O data-interfaces and SD card
Enter storage photovoltaic demonstration teaching video file in row data communication, SD card, file uses avi forms；Also storage alarm in SD card
And the audio file of cleaning voice message, file is using wav forms.Main control chip STM32F407 by with SD card data interaction
Video and audio file are read, and display and sound output are carried out by LCD display and loudspeaker.Main control chip
STM32F407 is connected by I/O data-interfaces with LCD display, using 16 parallel-by-bit modes.Main control chip STM32F407 leads to
Cross I2S integrated circuit built-in audio buses with loudspeaker to carry out data transmission, complete the output of audio signal.Main control chip
STM32F407 obtains the status information of 10-13 4 groups of buttons by 19-I/O data-interfaces, handles the corresponding logic of each button
Function.Main control chip STM32F407 cleans indicator lamp and red by I/O data-interfaces according to logical process result to blueness
Abnormal alarm indicator lamp sends flicker and indicated.Main control chip STM32F407 is by 20-RS232 communication modes, by unit exception report
The status signal such as alert communicates with GPRS module, and GPRS module can send the data to the terminal investor.
Good effect, it is an advantage of the current invention that a kind of rural area distributed photovoltaic O＆M device page display information is concise
Clearly；Possess tutorial function, the degree of awareness of the peasant household to photovoltaic generation can be improved；Polychrome button confirms that function is simply easily recognized,
It is easy to peasant household to be learnt and operated；Sound prompt function enough grasps user and performs the demand of photovoltaic O＆M.Suitable conduct
The apparatus and method application of rural area photovoltaic generation operation and maintenance.
By the implementation of the present invention, it can alleviate and be mounted with that the rural subscribers of distributed photovoltaic are passive because photovoltaic is ignorant of
No matter the phenomenon that ground is ignored photovoltaic, makes peasant household improve the degree of awareness to photovoltaic generation, is best understood from being installed in oneself
Photovoltaic system running situation, and the basic O＆M of photovoltaic can be actively participated in, ancillary investment side is complete to distributed photovoltaic
Into local maintenance work, the service life of distributed photovoltaic is improved, the economic benefit of photovoltaic generation is substantially lifted.
Brief description of the drawings
Fig. 1 is photovoltaic O＆M device and the connection figure of rural area distributed photovoltaic system；
Fig. 2 is structure chart of the invention；
Fig. 3 is the inside catenation principle block diagram of the present invention.
In figure, 1.PV photovoltaic panels, 2. photovoltaic DC-to-AC converters, 3. bidirectional measuring ammeters, 4. public electric wire nets；5.RS485 communication canals
Road, 6. photovoltaic O＆M devices, 7. investor's monitoring terminals, 8.GPRS communications conduits, 9.LCD display screens；10. orange button（Light
Lie prostrate teaching button）, 11. blue buttons photovoltaics cleaning ACK button, 12. red button photovoltaics report button extremely, and 13. black are pressed
Button changing interface button, 14. blueness cleaning indicator lamps, 15. red abnormal alarm indicator lamps, 16. voice message loudspeakers, 17.
Photovoltaic O＆M device main control chip STM32F407,18.SD card, 19.I/O data communication channels, 20.RS232 communications conduits,
21.I2S communications conduits.
Embodiment
According to shown in Fig. 1, PV photovoltaic panels 1 are connected by photovoltaic DC-to-AC converter 2 and bidirectional measuring ammeter 3 with the circuit of public electric wire net 4,
Photovoltaic DC-to-AC converter inputs to photovoltaic O＆M device 6 by RS485 communications conduits 5, and inputs to investment by GPRS communications conduits 8
Square monitoring terminal 7.
The side of photovoltaic O＆M device is equipped with GPRS communications conduits and voice message loudspeaker 16, in photovoltaic O＆M device
LCD display 9 is above housed, on the right side of LCD display equipped with blueness cleaning indicator lamp 14 and red abnormal alarm indicator lamp
15, orange button photovoltaic teaching button 10 is respectively provided with the bottom of photovoltaic O＆M device panel, the cleaning of blue buttons photovoltaic is true
Recognize button 11, red button photovoltaic reports button 12 and dark buttons changing interface button 13 extremely.
The photovoltaic teaching button be orange button, photovoltaic cleaning ACK button be blue buttons, photovoltaic report extremely by
Button is red button and changing interface button is dark buttons.
Photovoltaic is connected with by I/O data communication channel 19 respectively on the STM32F407 of photovoltaic O＆M device main control chip 17
Teaching button, photovoltaic cleaning ACK button, photovoltaic reports button and changing interface button extremely；And pass through I/O data communication canals
Road is connected with LCD display and SD card 18, is also connected with each other, led to by the communications conduits of RS232 20 and GPRS communication channels module
I2S 21 is crossed to be connected with each other with voice message loudspeaker 16；Blueness cleaning indicator lamp is also connected with by I/O on main control chip
With red abnormal alarm indicator lamp.
Concrete operations：
A kind of rural area distributed photovoltaic O＆M device, possesses essential information display function, photovoltaic knowledge teaching model function, equipment
Abnormal alarm function, photovoltaic panel cleaning sound prompt function.
LCD display, the basic O＆M information for showing photovoltaic system, comprising 3 class boundary faces, wherein two groups are photovoltaic and transport
Row interface, one group is demonstration teaching interface.System default shows first group of photovoltaic runnable interface, can be at two groups by dark buttons
Switched between photovoltaic runnable interface.The basic operation information of first interface display photovoltaic, including photovoltaic plate temperature, meteorological letter
Breath, commissioning date, cleaning day statistics, photovoltaic daily generation and generating total amount.Second contact surface shows photovoltaic operation electric quantity information,
Including input voltage, electric current, power；Output voltage, electric current, power information.By pressing orange button, it can be run from photovoltaic
Changing interface is to distributed photovoltaic demonstration teaching interface, by the effect of each module, normal shape in photovoltaic system in interface of imparting knowledge to students
State, application notice, clean method and O＆M mode are shown in the animation form being easily understood, while being raised by voice message
Sound device is explained to peasant household.Photovoltaic runnable interface can be returned to by pressing dark buttons.
A kind of rural area distributed photovoltaic O＆M device includes blueness cleaning indicator lamp；Red abnormal alarm indicator lamp；When clear
When the accumulation of clean day was by 30 days, blueness cleaning indicator lamp flashes automatically, at the same in the afternoon 5 when from voice message loudspeaker to peasant household
Cleaning is sent to remind；User presses blue buttons and confirmed, a kind of rural area distributed photovoltaic O＆M device is simultaneously tired by cleaning
Count and reset day, open next cleaning measurement period.Specific cleaning way peasant household can be learnt by teaching interface.
It is red when the photovoltaic operation information that a kind of rural area distributed photovoltaic O＆M device analysis is received has unusual condition
Color anomaly alarm lamp is lighted, while voice message loudspeaker sends alarm sound.User is pressing red button progress
While confirmation, i.e., by GPRS module to one unit exception emergency signals of distal end investor's terminal transmission, make distal end
Investor knows the abnormal information of corresponding distributed photovoltaic equipment as early as possible, and arranges maintenance in time, reduces the investor and peasant household
Economic loss.
Main control chip uses STM32F407 model ARM single-chip microcomputers inside device, is responsible for logical operation, the number of finishing device
The functions such as output are read according to transmitting-receiving process, AV signal.Main control chip STM32F407 passes through I/O data-interfaces and SD card
Enter storage photovoltaic demonstration teaching video file in row data communication, SD card, file uses avi forms；Also storage alarm in SD card
And the audio file of cleaning voice message, file is using wav forms.Main control chip STM32F407 by with SD card data interaction
Video and audio file are read, and display and sound output are carried out by LCD display and loudspeaker.Main control chip
STM32F407 is connected by I/O data-interfaces with LCD display, using 16 parallel-by-bit modes.Main control chip STM32F407 leads to
Cross I2S integrated circuit built-in audio buses with loudspeaker to carry out data transmission, complete the output of audio signal.Main control chip
STM32F407 obtains the status information of 10-13 4 groups of buttons by I/O data-interfaces, handles the corresponding logic work(of each button
Energy.Main control chip STM32F407 is different to blueness cleaning indicator lamp and red by I/O data-interfaces according to logical process result
Normal alarm lamp sends flicker and indicated.Main control chip STM32F407 is alarmed unit exception by RS232 communication modes
Status signal communicates with GPRS module, and GPRS module can send the data to the terminal investor.
Claims (1)
1. a kind of rural area distributed photovoltaic O＆M device, it is characterized in that:
PV photovoltaic panels（1）Pass through photovoltaic DC-to-AC converter（2）With bidirectional measuring ammeter（3）With public electric wire net（4）Circuit is connected, and photovoltaic is inverse
Become device and pass through RS485 communications conduits（5）Input to photovoltaic O＆M device（6）, and pass through GPRS communications conduits（8）Input to investment
Square monitoring terminal（7）；
The side of photovoltaic O＆M device is equipped with GPRS communications conduits and voice message loudspeaker（16）, before photovoltaic O＆M device
Face is equipped with LCD display（9）, on the right side of LCD display equipped with blueness cleaning indicator lamp（14）Indicated with red abnormal alarm
Lamp（15）, orange button photovoltaic teaching button is respectively provided with the bottom of photovoltaic O＆M device panel（10）, blue buttons photovoltaic
Clean ACK button（11）, red button photovoltaic reports button extremely（12）With dark buttons changing interface button（13）；
The photovoltaic teaching button is orange button, and photovoltaic cleaning ACK button is blue buttons, and photovoltaic reports the button to be extremely
Red button and changing interface button are dark buttons；
Photovoltaic O＆M device main control chip（17）Pass through I/O data communication channels on STM32F407 respectively（19）It is connected with photovoltaic
Teaching button, photovoltaic cleaning ACK button, photovoltaic reports button and changing interface button extremely；And pass through I/O data communication canals
Road is connected with LCD display and SD card（18）, also pass through RS232（20）Communications conduit is mutually interconnected with GPRS communication channels module
Connect, pass through I2S（21）With voice message loudspeaker（16）It is connected with each other；Also it is connected with main control chip by I/O blue clear
Clean indicator lamp and red abnormal alarm indicator lamp；
Concrete operations：
LCD display, the basic O＆M information for showing photovoltaic system, comprising 3 class boundary faces, wherein two groups are photovoltaic and run boundary
Face, one group is demonstration teaching interface；System default shows first group of photovoltaic runnable interface, can be in two groups of photovoltaics by dark buttons
Switched between runnable interface；The basic operation information of first interface display photovoltaic, including photovoltaic plate temperature, weather information, fortune
Row date, cleaning day statistics, photovoltaic daily generation and generating total amount；Second contact surface shows photovoltaic operation electric quantity information, including
Input voltage, electric current, power；Output voltage, electric current, power information；, can be from photovoltaic runnable interface by pressing orange button
Be switched to distributed photovoltaic demonstration teaching interface, in teaching interface by the effect of each module, normal condition in photovoltaic system, make
Shown with points for attention, clean method and O＆M mode in the animation form being easily understood, while passing through voice message loudspeaker
Explained to peasant household；Photovoltaic runnable interface can be returned to by pressing dark buttons；
A kind of rural area distributed photovoltaic O＆M device includes blueness cleaning indicator lamp；Red abnormal alarm indicator lamp；When cleaning day
When accumulating by 30 days, blueness cleaning indicator lamp flash automatically, while in the afternoon 5 when sent from voice message loudspeaker to peasant household
Cleaning is reminded；User presses blue buttons and confirmed, a kind of rural area distributed photovoltaic O＆M device is simultaneously by cleaning accumulative day
Reset, open next cleaning measurement period；Specific cleaning way peasant household can be learnt by teaching interface；
It is red different when the photovoltaic operation information that a kind of rural area distributed photovoltaic O＆M device analysis is received has unusual condition
Normal alarm lamp is lighted, while voice message loudspeaker sends alarm sound；User is confirmed pressing red button
While, i.e., by GPRS module to one unit exception emergency signals of distal end investor's terminal transmission, invest distal end
The abnormal information of corresponding distributed photovoltaic equipment is known as early as possible in side, and arranges maintenance in time, reduces the economy of the investor and peasant household
Loss；
Main control chip uses STM32F407 model ARM single-chip microcomputers inside device, is responsible for the logical operation of finishing device, data and receives
Hair processing, AV signal read the functions such as output；Main control chip STM32F407 is carried out by I/O data-interfaces and SD card
Photovoltaic demonstration teaching video file is deposited in data communication, SD card, file uses avi forms；Also storage is alarmed and clear in SD card
The audio file of clean voice message, file uses wav forms；Main control chip STM32F407 with SD card data interaction by reading
Video and audio file, and carry out display and sound output by LCD display and loudspeaker；Main control chip STM32F407 leads to
Cross I/O data-interfaces to be connected with LCD display, using 16 parallel-by-bit modes；Main control chip STM32F407 passes through the integrated electricity of I2S
Path built-in audio-frequency bus carries out data transmission with loudspeaker, completes the output of audio signal；Main control chip STM32F407 passes through I/
O data interface obtains the status information of 10-13 4 groups of buttons, handles the corresponding logic function of each button；Main control chip
STM32F407 cleans indicator lamp and red abnormal alarm indicator lamp by I/O data-interfaces according to logical process result to blueness
Flicker is sent to indicate；Main control chip STM32F407 by 20-RS232 communication modes, by unit exception alarm etc. status signal with
GPRS module communicates, and GPRS module can send the data to the terminal investor.
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| CN201710406800.7A CN107196332B (en) | 2017-06-02 | 2017-06-02 | Rural distributed photovoltaic operation and maintenance device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109255453A (en) * | 2018-11-20 | 2019-01-22 | 国网辽宁省电力有限公司葫芦岛供电公司 | A kind of marketing equipment operation tracking device |
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