CN207573684U - A kind of street lamp brightness control system based on LoRa communications - Google Patents
A kind of street lamp brightness control system based on LoRa communications Download PDFInfo
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- CN207573684U CN207573684U CN201721672579.1U CN201721672579U CN207573684U CN 207573684 U CN207573684 U CN 207573684U CN 201721672579 U CN201721672579 U CN 201721672579U CN 207573684 U CN207573684 U CN 207573684U
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Abstract
The utility model discloses a kind of a kind of street lamp brightness control systems based on LoRa communications in Street lamps control field,Including LoRa street-lamp nodes controller and LoRa street lamp gateways,LoRa street-lamp nodes controller includes main control chip,Dimming driving circuit,Data acquisition module and LoRa modules,Main control chip respectively with dimming driving circuit,Data acquisition module is connected with LoRa modules,LoRa street lamps gateway includes control processor,LoRa modules,Memory module,Light sensation module and power supply circuit,Control processor respectively with LoRa modules,Memory module is connected with light sensation module,Power supply circuit respectively with LoRa modules and control processor connect,LoRa street-lamp nodes controller is connect by LoRa modules with the LoRa modules in LoRa street lamp gateways.The advantages that the utility model transmits by force and at a distance with the low-power consumption of LoRa radio network techniques, low cost, stability, compensates for the deficiency in conventional road lamp control mode.
Description
Technical field
The utility model is related to Street lamps control fields more particularly to a kind of street lamp brightness based on LoRa communications to control system
System.
Background technology
The street lamp point of the country of China is more, wide, and street lamp facility is outmoded and disperses, and lamps and lanterns quantity type is more, facility maintenance cost
With height；Annual input is huge due to overhead volume caused by manual inspection and replacement lamps and lanterns.And the subordinate of street lamp in itself compiles
Personnel processed are just few, in addition daily manually inspection is with heavy work load, efficiency is low, of high cost.Street lamp control system can prevent daytime
Improper bright light economize on electricity realizes " management and control battalion " integration of street lamp, greatly reduces management service workload from now on, save people
Work improves the efficiency of management：There is computer system to be automatically performed the inspection management friendship of street lamp, automatically generate failure report daily,
And on automatic failure alarm to the mobile phone of operator on duty, therefore greatly improve management level and the efficiency of management and municipal road
Fluorescent tube reason rises to new a height and level, while saves operation, the maintenance cost for manually, saving vehicle, and country is sent out
Low-carbon economy is opened up, energy-saving and emission-reduction also function to the effect actively promoted.
Current street lamp control system, the main method using power line carrier carry out remote control, need to carry out road
Construction wiring and the installation of equipment, increase the difficulty that street lamp is installed.With advances in technology, wired and wireless network skill
The development of art so that modern street lamp can be connected in network, carried out by computer system login service device to every lamp
Telemetering, remote control.It is most of to be all based on ZIGBEE although realizing Wireless remote control, GPRS, 3G/4G technologies, wherein
For ZIGBEE in data transmission apart from short, data reliability is not high, it is difficult in the control for carrying out street lamp at a distance；And it uses
Standard is not achieved in power consumption in GPRS/3G/4G, and needs to pay operator's expense, as single product in terms of Street lamps control
Cost on Shortcomings, low-power consumption, low cost, the requirement transmitted at a distance is not achieved.
Utility model content
The utility model aim is to provide a kind of street lamp brightness control system to communicate based on LoRa, to solve existing skill
Defect present in art.
To achieve the above object, the utility model provides a kind of street lamp brightness control system to communicate based on LoRa, packet
LoRa street-lamp nodes controller and LoRa street lamp gateways are included, LoRa street-lamp nodes controller includes main control chip, light modulation driving electricity
Road, data acquisition module and LoRa modules, main control chip connect respectively with dimming driving circuit, data acquisition module and LoRa modules
It connects, LoRa street lamps gateway includes control processor, LoRa modules, memory module, light sensation module and power supply circuit, at control
Reason device connect respectively with LoRa modules, memory module and light sensation module, power supply circuit respectively with LoRa modules and control at
Device connection is managed, LoRa street-lamp nodes controller is connect by LoRa modules with the LoRa modules in LoRa street lamp gateways.
Preferably, LoRa street lamps gateway further includes GPRS module, and GPRS module is connect with control processor.
Preferably, control system further includes Cloud Server, and Cloud Server passes through with the GPRS module in LoRa street lamp gateways
Wireless network connection.
Preferably, LoRa street lamps gateway further includes IP Camera connection, and IP Camera is connect with control processor.
Preferably, LoRa modules include radio frequency chip, the dual-mode antenna being connected with radio frequency chip and and radio frequency chip
The crystal oscillating circuit being connected is equipped between radio frequency chip and dual-mode antenna and is opened for completing the radio frequency of dual-mode antenna modes swap
It closes, radio frequency chip is connected with control processor.
Preferably, GPRS module includes radio frequency master chip, the sim card slot circuit being connected with radio frequency master chip and with penetrating
The data antenna that frequency master chip is connected, radio frequency master chip are connected with control processor.
Preferably, the data acquisition module in LoRa street-lamp nodes controller include GPS positioning module, humiture module,
Light sensation module and pH value measurement module, GPS positioning module, humiture module, light sensation module and pH value measurement module respectively with master
Control chip connection.
Preferably, RF switch includes RF switch chip U5, filtering chip U6, resistance R15, electricity with dual-mode antenna circuit
Hold C28, capacitance C29, capacitance C30, capacitance C31, capacitance C32, capacitance C33, capacitance C34, capacitance C36, capacitance C37, capacitance
C38, capacitance C39, capacitance C40, capacitance C41, capacitance C42, capacitance C43, antenna SMA, inductance L8, inductance L9, inductance L10, electricity
Feel L11 and inductance L12, capacitance C28, inductance L8, inductance L9 and inductance L10 series connection, the inductance L10 other ends and RF switch
The 3rd pin connection of chip U5, the capacitance C28 other ends connect with capacitance C29 one end and are used as input terminal, the capacitance C29 other ends
Ground connection, capacitance C31 is in parallel with inductance L9, and capacitance C33 is in parallel with inductance L10, and capacitance C30 and inductance L8 and inductance L9's is public
End connection, capacitance C32 are connect with inductance L9 with the common end of inductance L10, the 3rd pin of capacitance C34 and RF switch chip U5
Connection, the other end ground connection of the other end of capacitance C30, the other end of capacitance C32 and capacitance C34；Inductance L12 and capacitance C36 goes here and there
Connection, the inductance L12 other ends are connect as output terminal, capacitance C37 with inductance L12 with the common end of capacitance C36, and capacitance C36 is another
End connect and is grounded with the 4th pin, the 5th pin and the 6th pin of filtering chip U6, the 1st pin of filtering chip U6, the 2nd
Pin and the 3rd pin connect and are grounded with capacitance C38 one end, the 1st pin of the capacitance C38 other ends and RF switch chip U5
Connection, the 2nd pin ground connection of RF switch chip U5, the 4th pin and resistance R15 one end and the capacitance of RF switch chip U5
C42 one end connects, and the 6th pin of RF switch chip U5 meets power supply and capacitance C43 one end, the 5th pin and capacitance C39 mono-
End connection；Resistance R15 other end conducts, capacitance C42 other ends ground connection；The capacitance C43 other ends are grounded；The capacitance C39 other ends with
One end of capacitance C40 and one end connection of inductance L11, capacitance C40 other ends ground connection, the inductance L11 other ends and capacitance C41 mono-
The connection of the anode of end and antenna SMA, capacitance C41 other ends ground connection, antenna SMA cathode ground connection.
The utility model has the advantages that：
1st, the street lamp brightness control system of the utility model utilizes the LoRa communication technologys, realizes low-power consumption, low cost, long distance
From transmitting control, reached energy-saving and environment-friendly purpose.
2nd, the utility model measures intensity of illumination, control LoRa street-lamp node controls by LoRa street lamp gateway light sensation circuits
The intensity of illumination of device can realize the Wireless remote control for lamp intensity of illumination of satisfying the need, reach the intelligentized control method to street lamp and management
Purpose.
3rd, the utility model is passed through by the data collecting module collected environmental parameter in LoRa street-lamp node controllers
LoRa street lamps gateway and Cloud Server concentrate the environmental parameter obtained near Node Controller real-time, are built for urbanization information
Interface is perceived if providing.
Below with reference to accompanying drawings, the utility model is described in further detail.
Description of the drawings
The attached drawing for forming the part of the application is used to provide a further understanding of the present invention, the utility model
Illustrative embodiments and their description do not form the improper restriction to the utility model for explaining the utility model.In attached drawing
In：
Fig. 1 is that a kind of structure of street lamp brightness control system to be communicated based on LoRa of the preferred embodiment in the utility model is shown
It is intended to；
Fig. 2 is the structure diagram of the LoRa street lamp gateways of the preferred embodiment in the utility model；
Fig. 3 is the structure diagram of the LoRa street-lamp node controllers of the preferred embodiment in the utility model；
Fig. 4 is that the main control chip minimum system circuit of the LoRa street-lamp node controllers of the preferred embodiment in the utility model is former
Reason figure；
Fig. 5 is the radio frequency chip of the LoRa modules of the preferred embodiment in the utility model and crystal oscillating circuit schematic diagram；
Fig. 6 is the RF switch of the LoRa modules of the preferred embodiment in the utility model and dual-mode antenna circuit diagram.
Specific embodiment
The embodiment of the utility model is described in detail below in conjunction with attached drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
The utility model discloses a kind of street lamp brightness control system based on LoRa communications, referring to Fig. 1, Fig. 2 and Fig. 3,
Including LoRa street-lamp nodes controller 1 and LoRa street lamps gateway 2, LoRa street-lamp nodes controller 1 includes main control chip 11, light modulation
Driving circuit 12, data acquisition module 13 and LoRa modules 22, main control chip 11 acquire respectively with dimming driving circuit 12, data
Module 13 and LoRa modules 22 connect, and LoRa street lamps gateway 2 includes control processor 21, LoRa modules 22, memory 24, light sensation
Circuit 25 and power supply circuit 26, control processor 21 are connect respectively with LoRa modules 22, memory 24 and light sensation circuit 25, power supply
Circuit 26 is connect respectively with LoRa modules 22 and control processor 21, LoRa street-lamp nodes controller 1 by LoRa modules 22 with
LoRa modules 22 in LoRa street lamps gateway 2 interconnect.
After the light sensation circuit 25 of LoRa street lamps gateway 2 measures environment illumination intensity, control processor 21 passes through LoRa modules
22 are sent to light Regulate signal the LoRa street-lamp nodes controller 1 under LoRa street lamps gateway 2, the control of LoRa street-lamp nodes
After device 1 receives light Regulate signal by LoRa modules 22, dimming driving circuit 12 is driven to adjust by main control chip 11
The street lamp brightness of LoRa street-lamp nodes.Using 25 collected intensity of illumination of light sensation circuit, each street lamp section under gateway can be controlled
The brightness of point, accomplishes to automatically control on demand, realizes intelligentized control method so as to reach energy-efficient purpose.It is measured using a gateway
Environment illumination intensity controls the brightness value of each street lamp under gateway, and each street lamp is avoided to be controlled using the light sensation data of oneself
The brightness of oneself street lamp so that each street lamp brightness is different.Meanwhile the data acquisition module of LoRa street-lamp nodes controller 1
The environmental data that block 13 acquires is transmitted to LoRa street lamps gateway 2 by LoRa modules 22, can quickly concentrate LoRa street-lamp nodes
Environmental parameter near controller 1 provides perception interface for urbanization information construction.LoRa street lamps gateway 2 is typically mounted at friendship
Cross road mouth or the street lamp top at the core position in a road, control processor 21 are the cores of LoRa street lamps gateway 2
Part controls the operation of entire gateway, and main control chip 11 and control processor 21 select STM32F103, is street lamp referring to Fig. 4
Main control chip 11STM32F103 minimum system circuit diagrams in Node Controller.When each LoRa street-lamp nodes controller 1 is adopted
When the information of collection is sent to LoRa street lamp gateways 2 by LoRa modules 22, received by the LoRa modules 22 of LoRa street lamps gateway 2,
Information temporary storage is in memory 25, wherein memory model AT24C02.In addition, LoRa street lamps gateway 2 can pass through RS232
Serial ports is connected with PC, it can be configured and debugged using PC hair serial port commands.LoRa street-lamp nodes controller 1 and LoRa
LoRa modules 22 in street lamp gateway 2 belong to same module, LoRa street-lamp nodes controller 1 by LoRa modules 22 with
LoRa modules 22 in LoRa street lamps gateway 2 interconnect.LoRa wireless sense networks run on the public meters of 470MHz-510MHz
Frequency range is measured, with reference to time division synchronous and the Frequency Hopping Multiple Access FHMA communication technology, there is higher efficiency of frequency employment and network robustness, can protect
End-to-end low transmission time delay communication is demonstrate,proved, meanwhile, have high reliable communication ability under extensive, high density node arrangement scene.
System uses channel Frequency-hopping Communication Technology, dexterously utilizes different frequency hop sequences and channel network identification technology, intertexture error correction
Coding etc. so that network has the very strong ability for avoiding netting inside and outside radio frequency interference.Meanwhile LoRa modules 22 are saved as routing
Point has the judgement in real time of band link-quality from the real-time self-optimizing relay function of link, and the relaying series of support has big up to 16 grades
The application demand of area covering, have the network coverage height, flexible structure, reliability be high, versatile, construction laying simply,
The advantages of easy to maintain, using distribution topology membership credentials, allows each routing node that can find multiple available father's routings
Node simultaneously establishes more than two links to reach a variety of variations spatially, since the control of street-lamp node does not need to big data
Transmission, while achieve the purpose that transmit at a distance again, so LoRa technologies and LoRa modules 22 are very suitable for applying to street lamp
Control so as to reduce the cost for using repeater and other such as GPRS/3G/4G network tollings, is only taken the photograph in acquisition network
When as head video and transmitting data, just using the GPRS/3G/4G networks of big bandwidth, accomplish that each module reasonable distribution utilizes, reached
Low-power consumption has been arrived, low cost, high stability, the purpose of remote transmission control, while belong to wireless technology, power line can be saved
Required space is being installed, is saving cost.This system can also artificially issue the control instruction of street-lamp node using platform, make
Each street lamp brightness is obtained by artificial control, each street lamp brightness under it can be automatically controlled by gateway, gateway can be also set by flat
Platform control instruction carries out light modulation setting to single street-lamp node.
Preferably, LoRa street lamps gateway 2 further includes GPRS module 23, and GPRS module 23 is connect with control processor 21.
Preferably, control system further includes Cloud Server 3, Cloud Server 3 and the GPRS module 23 in LoRa street lamps gateway 2
Pass through wireless network connection.
LoRa street lamps gateway 2 can be attached using GPRS module 23 with Cloud Server 3 by wireless network, thus will
The environmental parameter that LoRa street-lamp nodes controller 1 acquires is stored to Cloud Server 3.It meanwhile can be right by Cloud Server 3
LoRa street-lamp nodes controller 1 carries out remote control operation and unified management.
Preferably, LoRa street lamps gateway 2 further includes IP Camera 27 and connects, IP Camera 27 and control processor 21
Connection.
The data that IP Camera 27 acquires are sent to Cloud Server 3 by GPRS module 23 and are preserved.Camera is adopted
The data integrated is the pictures of ambient enviroment, the accident offer reference frame to needing to be judged by historical picture.
Preferably, LoRa modules 22 include radio frequency chip 221, the dual-mode antenna 223 being connected with radio frequency chip 221 and
The crystal oscillating circuit 224 being connected with radio frequency chip 221 is equipped with to complete to receive between radio frequency chip 221 and dual-mode antenna 223
The RF switch 222 of 223 modes swap of antenna is sent out, radio frequency chip 221 is connected with control processor 21 by SPI interface.
Wherein, the model SX1278 of radio frequency chip 221 is illustrated in figure 5 the circuit diagram of radio frequency chip 221；It penetrates
The model PE4259 of frequency switch 222 is illustrated in figure 6 the RF switch 222 being connected with radio frequency chip 221SX1278 and receives
Send out the circuit diagram of antenna 223.
Preferably, the sim card slot circuit that GPRS module 23 includes radio frequency master chip 231, is connected with radio frequency master chip 231
232 and the data antenna 233 that is connected with radio frequency master chip 231, radio frequency master chip 231 be connected with control processor 21.
Wherein, the model MG301 of radio frequency master chip 231.
Preferably, the data acquisition module 13 in LoRa street-lamp nodes controller 1 includes GPS positioning module, humiture mould
Block, light sensation module and pH value measurement module, GPS positioning module, humiture module, light sensation module and pH value measurement module respectively with
Main control chip 11 connects.
The GPS positioning information, temperature and humidity value, environment that LoRa street lamps gateway 2 can acquire LoRa street-lamp nodes controller 1 are bright
Degree and pH value etc. can find corresponding street lamp position, and wherein GPS positioning module selects NEO-6M UBLOX satellite locator moulds
Block, light sensation module select GY301 serial ports light intensity modules, and Temperature Humidity Sensor selects HTU21D Temperature Humidity Sensors.LoRa street lamps
The environmental parameter that gateway 2 acquires can also be preserved to Cloud Server 3, pass through 3 concentrated controling management of Cloud Server.All environment
Data information provides accurate information for civic trip, provides environmental data information while energy-saving illumination is completed, is not required to
It additionally to be connected up, save vast resources and cost.
Preferably, RF switch 222 includes RF switch chip U5, filtering chip U6, resistance with 223 circuit of dual-mode antenna
R15, capacitance C28, capacitance C29, capacitance C30, capacitance C31, capacitance C32, capacitance C33, capacitance C34, capacitance C36, capacitance C37,
Capacitance C38, capacitance C39, capacitance C40, capacitance C41, capacitance C42, capacitance C43, antenna SMA, inductance L8, inductance L9, inductance
L10, inductance L11 and inductance L12, capacitance C28, inductance L8, inductance L9 and inductance L10 series connection, the inductance L10 other ends and radio frequency
The 3rd pin connection of switch chip U5, the capacitance C28 other ends connect with capacitance C29 one end and are used as input terminal, and capacitance C29 is another
One end is grounded, and capacitance C31 is in parallel with inductance L9, and capacitance C33 is in parallel with inductance L10, the public affairs of capacitance C30 and inductance L8 and inductance L9
End connection, capacitance C32 are connect with inductance L9 with the common end of inductance L10 altogether, and capacitance C34 draws with the 3rd of RF switch chip U5
Foot connects, the other end ground connection of the other end of capacitance C30, the other end of capacitance C32 and capacitance C34；Inductance L12 and capacitance C36
Series connection, the inductance L12 other ends are connect as output terminal, capacitance C37 with inductance L12 with the common end of capacitance C36, and capacitance C36 is another
One end connect and is grounded with the 4th pin, the 5th pin and the 6th pin of filtering chip U6, the 1st pin of filtering chip U6,
2 pins and the 3rd pin connect and are grounded with capacitance C38 one end, and the capacitance C38 other ends draw with the 1st of RF switch chip U5
Foot connects, the 2nd pin ground connection of RF switch chip U5, the 4th pin and resistance R15 one end and the electricity of RF switch chip U5
Hold the connection of C42 one end, the 6th pin of RF switch chip U5 meets power supply and capacitance C43 one end, the 5th pin and capacitance C39
One end connects；Resistance R15 other end conducts, capacitance C42 other ends ground connection；The capacitance C43 other ends are grounded；The capacitance C39 other ends
It is connect with one end of capacitance C40 and one end of inductance L11, capacitance C40 other ends ground connection, the inductance L11 other ends and capacitance C41
The anode of one end and antenna SMA connect, capacitance C41 other ends ground connection, antenna SMA cathode ground connection.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (8)
1. a kind of street lamp brightness control system based on LoRa communications, which is characterized in that including LoRa street-lamp nodes controller (1)
With LoRa street lamps gateway (2), the LoRa street-lamp nodes controller (1) including main control chip (11), dimming driving circuit (12),
Data acquisition module (13) and LoRa modules (22), the main control chip (11) respectively with the dimming driving circuit (12), institute
Data acquisition module (13) and the LoRa modules (22) connection are stated, the LoRa street lamps gateway (2) is including control processor
(21), LoRa modules (22), memory (24), light sensation circuit (25) and power supply circuit (26), the control processor (21)
It is connect respectively with the LoRa modules (22), the memory (24) and the light sensation circuit (25), the power supply circuit
(26) it is connect respectively with the LoRa modules (22) and the control processor (21), the LoRa street-lamp node controllers
(1) it is interconnected by LoRa modules (22) and the LoRa modules (22) in the LoRa street lamps gateway (2).
2. a kind of street lamp brightness control system based on LoRa communications according to claim 1, which is characterized in that described
LoRa street lamps gateway (2) further includes GPRS module (23), and the GPRS module is connect with the control processor (21).
A kind of 3. street lamp brightness control system based on LoRa communications according to claim 2, which is characterized in that the control
System processed further includes Cloud Server (3), the Cloud Server (3) and the GPRS module (23) in the LoRa street lamps gateway (2)
Pass through wireless network connection.
4. a kind of street lamp brightness control system based on LoRa communications according to claim 3, which is characterized in that described
LoRa street lamps gateway (2) further includes IP Camera (27), and the IP Camera (27) connects with the control processor (21)
It connects.
5. a kind of street lamp brightness control system based on LoRa communications according to claim 1, which is characterized in that described
Dual-mode antenna (223) that LoRa modules (22) are connected including radio frequency chip (221), with the radio frequency chip (221) and with
The crystal oscillating circuit (224) that the radio frequency chip (221) is connected, in the radio frequency chip (221) and the dual-mode antenna (223)
Between be equipped with for the RF switch (222) of completing dual-mode antenna (223) modes swap, the radio frequency chip (221) with it is described
Control processor (21) is connected.
6. a kind of street lamp brightness control system based on LoRa communications according to claim 3, which is characterized in that described
The sim card slot circuit (232) that GPRS module (23) is connected including radio frequency master chip (231), with the radio frequency master chip (231)
And the data antenna (233) being connected with the radio frequency master chip (231), the radio frequency master chip (231) and the control
Processor (21) is connected.
7. a kind of street lamp brightness control system based on LoRa communications according to claim 1, which is characterized in that described
Data acquisition module (13) in LoRa street-lamp nodes controller (1) includes GPS positioning module, humiture module, light sensation module
With pH value measurement module, the GPS positioning module, the humiture module, the light sensation module and the pH value measurement module
It is connect respectively with the main control chip (11).
8. a kind of street lamp brightness control system based on LoRa communications according to claim 5, which is characterized in that radio frequency is opened
It closes (222) and includes RF switch chip U5, filtering chip U6, resistance R15, capacitance C28, capacitance with dual-mode antenna (223) circuit
C29, capacitance C30, capacitance C31, capacitance C32, capacitance C33, capacitance C34, capacitance C36, capacitance C37, capacitance C38, capacitance C39,
Capacitance C40, capacitance C41, capacitance C42, capacitance C43, antenna SMA, inductance L8, inductance L9, inductance L10, inductance L11 and inductance
L12, capacitance C28, inductance L8, inductance L9 and inductance L10 series connection, the 3rd pin of the inductance L10 other ends and RF switch chip U5
Connection, the capacitance C28 other ends connect with capacitance C29 one end and are used as input terminal, capacitance C29 other ends ground connection, capacitance C31 and electricity
It is in parallel to feel L9, capacitance C33 is in parallel with inductance L10, and capacitance C30 is connect with inductance L8 with the common end of inductance L9, capacitance C32 and electricity
Sense L9 is connect with the common end of inductance L10, and capacitance C34 is connect with the 3rd pin of RF switch chip U5, and capacitance C30's is another
The other end ground connection at end, the other end of capacitance C32 and capacitance C34；Inductance L12 connects with capacitance C36, and the inductance L12 other ends are made
For output terminal, capacitance C37 is connect with inductance L12 with the common end of capacitance C36, the capacitance C36 other ends and the 4th of filtering chip U6
Pin, the 5th pin and the 6th pin are connected and are grounded, the 1st pin, the 2nd pin and the 3rd pin and the electricity of filtering chip U6
Hold C38 one end to connect and be grounded, the capacitance C38 other ends are connect with the 1st pin of RF switch chip U5, RF switch chip U5
The 2nd pin ground connection, the 4th pin of RF switch chip U5 connect with resistance R15 one end and capacitance C42 one end, and radio frequency is opened
The 6th pin for closing chip U5 connects power supply and capacitance C43 one end, and the 5th pin is connect with capacitance C39 one end；The resistance R15 other ends
As capacitance C42 other ends ground connection；The capacitance C43 other ends are grounded；The one end and inductance of the capacitance C39 other ends with capacitance C40
One end connection of L11, capacitance C40 other ends ground connection, the inductance L11 other ends connect with the anode of capacitance C41 one end and antenna SMA
It connects, capacitance C41 other ends ground connection, antenna SMA cathode ground connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721672579.1U CN207573684U (en) | 2017-12-05 | 2017-12-05 | A kind of street lamp brightness control system based on LoRa communications |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721672579.1U CN207573684U (en) | 2017-12-05 | 2017-12-05 | A kind of street lamp brightness control system based on LoRa communications |
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| CN207573684U true CN207573684U (en) | 2018-07-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157100A (en) * | 2018-08-28 | 2019-01-08 | 深圳大学 | A kind of curtain Controller based on LoRa |
| CN117279163A (en) * | 2023-11-20 | 2023-12-22 | 四川融海智城科技集团有限公司 | Energy-saving control system and method for road traffic lighting in tunnel with lamp being driven by vehicle |
-
2017
- 2017-12-05 CN CN201721672579.1U patent/CN207573684U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109157100A (en) * | 2018-08-28 | 2019-01-08 | 深圳大学 | A kind of curtain Controller based on LoRa |
| CN117279163A (en) * | 2023-11-20 | 2023-12-22 | 四川融海智城科技集团有限公司 | Energy-saving control system and method for road traffic lighting in tunnel with lamp being driven by vehicle |
| CN117279163B (en) * | 2023-11-20 | 2024-02-02 | 四川融海智城科技集团有限公司 | Energy-saving control system and method for road traffic lighting in tunnel with lamp being driven by vehicle |
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