CN108337779A - A kind of wireless single lamp control system based on LoRa technologies - Google Patents
A kind of wireless single lamp control system based on LoRa technologies Download PDFInfo
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- CN108337779A CN108337779A CN201810218010.0A CN201810218010A CN108337779A CN 108337779 A CN108337779 A CN 108337779A CN 201810218010 A CN201810218010 A CN 201810218010A CN 108337779 A CN108337779 A CN 108337779A
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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]
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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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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/19—Controlling the light source by remote control via wireless transmission
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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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
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Abstract
The invention discloses a kind of wireless single lamp control systems based on LoRa technologies, including system host, LoRa is wireless coordinator and LoRa wireless single-light controllers, system host is communicated with the wireless coordinators of LoRa by bus serial, with LoRa wireless single-light controllers by wireless network connection, LoRa wireless single-light controllers are connect with outside lamps and lanterns for LoRa is wireless coordinator.The present invention, which has external dimmable lamp by system host, LoRa is wireless coordinator and LoRa wireless single-light controllers, carries out centralized control, can carry out detecting and positioning automatically to the failure of adjustable lamps and lanterns, and ensure to have the advantages that while centralized control low in energy consumption.
Description
Technical field
The present invention relates to Lighting control field more particularly to a kind of wireless single lamp control systems based on LoRa technologies.
Background technology
With the fast development of China's highway and the quickening of city-building, tunnel illumination and town road illumination are swift and violent
Increase, required illuminator quantity sharp increase becomes field of traffic and the most important energy consumption source of cities and towns public utilities.It is existing
There are traditional tunnel illumination and town road lighting control system that lamps and lanterns packet segmentation is arranged to install, there is a point circuit controlling party
Formula and the wired brightness adjustment control mode of packet classification.Point circuit control mode does not dim every lamp, only control every group certain
The break-make of a ring current；The wired brightness adjustment control mode of packet classification is believed one group of lamps and lanterns control using dimming control signal cable
Number connection, one group of lamps and lanterns adjust brightness simultaneously.These control modes need to lay brightness adjustment control cable, lay more independent photograph
Bright circuit and service cable, difficulty of construction is big, especially in tunnel illumination, due to the use of circuit break-make and packet classification tune
Light, it is difficult to which reaching tunnel brightness, smoothly control is required with meeting tunnel safety driving, and forms larger waste of energy；In addition,
It has no idea to detect in time and diagnoses lamp failure, failure lamps and lanterns can not be positioned, needing manually to patrol just can determine that
Lamp failure and lamp position, tunnel illumination safeguards very inconvenient, the easy influence traffic safety when damage lamps and lanterns are more, and works as
When dim signal input terminal shortcircuit occurs for certain lamps and lanterns, all lamps and lanterns where making on one group of light modulation cable are abnormal, i.e., can not
Light modulation, to lose dimming function, seriously affects tunnel traffic safety, road safety of person vehicle, or causes huge electric energy wave
Take.
In recent years, with the development of technology of Internet of things, there are many have short distance, low data rate and low-power consumption special
The wireless terminal controller application of sign is in highway lighting field.It is disliked however, environment is opposite for highway lighting, in tunnel
Bad, lamps and lanterns quantity is relatively intensive, and there are many super long tunnels.The wireless terminal control that existing capability is simple, communication modes are single
It is remote increasingly prominent with low-power consumption contradiction present in device processed, and this kind of wireless terminal controller is all automatic without lamp failure
Detection and positioning function, have not been suitable for tunnel illumination, with the development of town road, it is also difficult to meet town road and enterprise
The requirement of interior zone wisdom illumination.
Invention content
The object of the invention is being provided in a kind of LoRa wireless single lamps control system, to solve technology existing in the prior art
Defect.
To achieve the above object, the present invention provides a kind of wireless single lamp control systems based on LoRa technologies, including are
It unites host, LoRa is wireless coordinator and LoRa wireless single-light controllers, system host passes through bus string with the wireless coordinators of LoRa
Row communication, LoRa is wireless, and coordinator passes through wireless network connection, LoRa wireless single-light controllers with LoRa wireless single-light controllers
It is connect with external lamps and lanterns.
Preferably, a kind of LoRa wireless single lamps control system, including power module, LoRa wireless modules, microcontroller, light modulation
Module, relay module and current acquisition module, power module respectively with LoRa wireless modules, light-adjusting module, relay module
And microcontroller connection, to provide electric power, microcontroller is connect with relay module, current acquisition module and light-adjusting module respectively, is adjusted
Optical module and current acquisition module are connect with external lamps and lanterns.
Preferably, power module includes that 220V turns 12V power modules and 12V turns 3.3V power modules, and 220V turns 12V electricity
Source module turns 3.3V power modules with 12V and relay module is connect, and 12V turns 3.3V power modules and microcontroller, light modulation mould
Block and the connection of LoRa wireless modules.
Preferably, light-adjusting module include resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, capacitance C1, capacitance C2,
Fuse F1, diode D1, diode D2, triode Q1, zener diode U1 and amplifier chip U2, resistance R1 one end conducts
Pwm signal input terminal, the other end are connect with triode Q1 base stages；The collector of triode Q1 and one end of resistance R2, R3 one
The connection of the cathode of end and zener diode, the resistance R2 other ends are connect with 3.3V power supplys, the other end and the capacitance C1 of resistance R3
One end and amplifier chip U2 the connection of the first pin, the emitter of triode Q1 and anode, the capacitance of zener diode U1
The other end of C1, one end of resistance R5, one end of capacitance C2 and amplifier chip U2 second pin connect and be grounded；Capacitance C2
The other end connect with the second pin of amplifier chip U2 and connect 12V power supplys；The other end of resistance R5 respectively with the one end resistance R4
And the third pin connection of amplifier chip U2, the other end of resistance R4 and the 4th pin, the fuse F1 mono- of amplifier chip U2
The anode connection at end, the cathode of diode D1 and diode D2；The plus earth of diode D1, the cathode connection of diode D2
12V power supplys, the fuse F1 other ends are as signal output end.
Preferably, current acquisition module includes current transformer H1, resistance R6, resistance R7, resistance R8, diode D3, two
The first foot of pole pipe D4 and capacitance C3, current transformer H1 are as the input terminal of power firestreak, third foot as power firestreak
Output end, one end of resistance R6 and the crus secunda of current transformer H1, one end of capacitance C3, diode D3 cathode, diode
The anode of D4 connects and is connected to microcontroller, the 4th foot, the other end of capacitance C3, the diode of the other end and current transformer H1
One end connection of the anode of D3, the cathode of diode D4, one end of resistance R7 and resistance R8；The other end of resistance R7 is grounded；
The other end of resistance R8 is connect with 3.3V power supplys.
The invention has the advantages that：
1, the present invention concentrates adjustable lamps and lanterns by system host, LoRa is wireless coordinator and LoRa wireless single-light controllers
Control can carry out the failure of adjustable lamps and lanterns to detect and position automatically, and with low in energy consumption while ensure centralized control
Advantage.
2, DA that is a kind of simple in structure and meeting practical application is devised in LoRa wireless single-light controllers of the invention
Light-adjusting module, the Modular circuit design do not need special digital-to-analogue chip, cost are greatly saved.
3, electricity need not be added in the circuit of designed current acquisition module in LoRa wireless single-light controllers of the invention
Amplifier is pressed, other addition chips is not needed yet and improves acquisition precision, of low cost, simple in structure and practical, high financial profit.
Below with reference to accompanying drawings, the present invention is described in further detail.
Description of the drawings
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is a kind of LoRa wireless single lamps control system mechanism map of the preferred embodiment of the present invention；
Fig. 2 is the LoRa wireless single-light controller system construction drawings of the preferred embodiment of the present invention
Fig. 3 is the light-adjusting module circuit block diagram of the preferred embodiment of the present invention；
Fig. 4 is the current acquisition and lamp power output module circuit block diagram of the preferred embodiment of the present invention；
Fig. 5 is the single-lamp controller function and software flow realization figure of the preferred embodiment of the present invention.
In figure, 1, system host；2, the wireless coordinators of LoRa；3, LoRa wireless single-light controllers；311,220V turns 12V electricity
Source module；312,12V turns 3.3V power modules；32, LoRa wireless modules；33, microcontroller；34, light-adjusting module；35, relay
Module；36, current acquisition module.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
To achieve the above object, the present invention provides a kind of wireless single lamp control systems based on LoRa technologies, referring to figure
1, including the wireless coordinator 2 of system host 1, LoRa and LoRa wireless single-light controllers 3, system host 1 and LoRa is without line coordination
Device 2 is communicated by bus serial, and LoRa is wireless, and coordinator 2 passes through wireless network connection, LoRa with LoRa wireless single-light controllers 3
Wireless single-light controller 3 is connect with external lamps and lanterns.
Programmable logic controller (PLC) PLC or industrial control computer, the bus built in host can be used to connect for system host 1
Mouth mold block is connect by the general line system built in 485 the buses either wireless coordinator of CAN bus or PROFIBUS buses and LoRa 2
Mouth mold block connects, and host realizes bus type serial communication with the wireless coordinators 2 of LoRa, initiates to communicate by host.LoRa is wirelessly assisted
LoRa wireless communications are initiated after adjusting device 2 to receive Host Command, and the order that host is sent out is sent to successfully networking and enters system
The wireless tunable optical single-lamp controllers of LoRa, then be subjected to single-lamp controller pass through LoRa wireless communication return lamp failure
Status information, and system host 1 is uploaded to by bus communication.LoRa wireless single-light controllers 3 pass through LoRa side wireless communications
Formula and LoRa are wireless, and coordinator 2 is communicated, and is parsed after receiving the control command that the wireless coordinators of LoRa 2 are sent and is handled number
According to according to command analysis as a result, LED lamp progress of the network parameter configuration of itself with modification, to being connect can be carried out respectively
The switch of brightness adjustment control or power supply controls；If order is to read lamp failure status information, returned to coordinator corresponding
Lamp failure state value and fault location data.LoRa wireless single-light controllers 3 pass through the event of current sensor timing acquiring lamps and lanterns
Hinder information.Fault location data are automatically generated by single-lamp controller.
By the LoRa wireless single-light controllers 3 of the present invention, LoRa is wireless coordinator 2, system host 1 constitute based on LoRa without
Line single lamp control system.The system is applied to tunnel, town road, and either enterprise's area illumination forms tunnel management institute or road
The wireless lighting local area network of road management institute or enterprise's illumination level-one, by internet networking, the illumination that can form bigger is supervised
Control system, such as provincial, and municipal level illumination of highway tunnel intelligent monitoring system.
Preferably, referring to Fig. 2, LoRa wireless single-light controllers 3 include power module, LoRa wireless modules 32, microcontroller
33, light-adjusting module 34, relay module 35 and current acquisition module 36, power module respectively with LoRa wireless modules 32, light modulation
Module 34, relay module 35 and the connection of microcontroller 33 to provide electric power, microcontroller 33 respectively with relay module 35, electric current
Acquisition module 36 and DA light-adjusting modules 34 connect, and light-adjusting module 34 and current acquisition module 36 are connect with external lamps and lanterns.
Microcontroller 33 controls LoRa wireless modules 32, is emitted by 433MHz antennas or receives wireless signal and realizes channel radio
Letter, the antenna should be exposed to outside tunable optical single-lamp controller shell, in order to avoid influence communication distance and laser propagation effect.Microcontroller 33 exists
After receiving LoRa Wireless Light modulating communications commands, the adjustable pwm signal of output duty cycle dims mould to DA light-adjusting modules 34 by DA
Pwm signal is converted to 0-10VDC dimming control signals by block 34, is exported to the energy supply control module of lamps and lanterns, energy supply control module
The brightness of illumination that lamps and lanterns are automatically adjusted according to dim signal realizes light modulation.Microcontroller 33 is receiving LoRa wireless relays switch
After controlling signal communication order, the break-make of relay is controlled, the break-make control of lamp power is realized, that is, controls the upper of lamp power
Electricity and power-off.The working power of LoRa wireless single-light controllers 3 and lamps and lanterns by single-lamp controller 220VAC power input ports
Access.LoRa is wireless, and tunable optical single-lamp controller has two-way output, is all the way 0-10VDC the PWM dim signals of lamps and lanterns, and one
Road is 220VAC lamp powers.This two-way exports input connection corresponding with lamps and lanterns, and LoRa is wireless, and tunable optical single-lamp controller can
To realize light modulation and the on/off control of lamps and lanterns respectively.The power input of tunable optical lamp power control module and LORA without
The 220V output ends of line tunable optical single-lamp controller connect, and generate lamp power, the operating current of lamps and lanterns operation is wireless by LORA
The current acquisition module 36 of tunable optical single-lamp controller detects；The light modulation input terminal and LORA of tunable optical lamp power control module
34 output end of DA light-adjusting modules of wireless tunable optical single-lamp controller is connected, and obtains 0-10V dimming control signals.If lamps and lanterns institute
DA light-adjusting modules 34 need not be passed through then by 33 direct output pwm signal of microcontroller by needing dimming control signal to be pwm signal.
Preferably, power module includes that 220V turns 12V power modules 311 and 12V turns 3.3V power modules 312, and 220V turns
12V power modules 311 turn 3.3V power modules 312 with 12V and relay module 35 is connect, and 12V turns 3.3V power modules 312
It is connect with microcontroller 33, light-adjusting module 34 and LoRa wireless modules 32.
Alternating current 220V alternating current connects the power input of the wireless tunable optical single-lamp controllers of LORA, turns by 220V in inside
12V power modules 311 export direct current 12V power supplys；Direct current 12V power supplys are powered directly to relay coil, meanwhile, and pass through 12V
Turn 3.3V power modules 312 and export direct current 3.3V power supplys, 3.3V power supplies are provided to microcontroller 33 and LoRa wireless modules 32.
Preferably, light-adjusting module 34 includes resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, capacitance C1, capacitance
C2, fuse F1, diode D1, diode D2, triode Q1, zener diode U1 and amplifier chip U2, the one end resistance R1 are made
For pwm signal input terminal, the other end is connect with triode Q1 base stages；The collector of triode Q1 and one end of resistance R2, R3
The cathode of one end and zener diode connects, and the resistance R2 other ends are connect with 3.3V power supplys, the other end and capacitance of resistance R3
One end of C1 and the first pin connection of amplifier chip U2, the emitter of triode Q1 and anode, the electricity of zener diode U1
The second pin for holding the other end of C1, one end of resistance R5, one end of capacitance C2 and amplifier chip U2 is connected and is grounded；Capacitance
The other end of C2 connect with the second pin of amplifier chip U2 and connects 12V power supplys；The other end of resistance R5 respectively with resistance R4 mono-
The connection of the third pin of end and amplifier chip U2, the other end of resistance R4 and the 4th pin, the fuse F1 of amplifier chip U2
The anode connection of one end, the cathode of diode D1 and diode D2；The cathode of the plus earth of diode D1, diode D2 connects
12V power supplys are connect, the fuse F1 other ends are as signal output end.
Fig. 3 show the specific design circuit of DA light-adjusting modules 34 in LoRa wireless single-light controllers 3, realizes that duty ratio is
Conversion of the PWM dim signals of 0-100% to 0-10V direct current dim signals：By 33 output pwm signal of microcontroller；Triode Q1 and
The amplitude 3.3V that Q1 is exported, duty ratio the 0-100% PWM waveform changed are converted to the both ends C1 with PWM by resistance R2, R3, capacitance C1
Waveform duty cycle changes, and amplitude is the DC voltage waveform of 2.5-0V, which puts through LM321 operational amplification circuits
Greatly, the direct current dimmer voltage V that output amplitude changes within the scope of 0-10VOUT。
Preferably, referring to Fig. 4, current acquisition module 36 includes current transformer H1, resistance R6, resistance R7, resistance R8, two
The first foot of pole pipe D3, diode D4 and capacitance C3, current transformer H1 are used as electricity as input terminal, the third foot of power firestreak
The output end of source firewire, one end of resistance R6 and the crus secunda of current transformer H1, one end of capacitance C3, diode D3 it is negative
Pole, diode D4 anode connect and be connected to microcontroller 33, the 4th foot of the other end and current transformer H1, capacitance C3 it is another
One end connection of one end, the anode of diode D3, the cathode of diode D4, one end of resistance R7 and resistance R8；Resistance R7's
The other end is grounded；The other end of resistance R8 is connect with 3.3V power supplys.
Firewire 220V-L is inputted using the normally-closed contact connection 220V of relay HF32F, by current transformer（DL-
CT21C0.2）Source side terminals 1 connect relay normally closed interlock（220V-L1）It is gone here and there with the source side terminals 3 of current transformer
It is connected on the power supply firewire of lamp power control module（220V-L2）On and 220V zero-power lines through single-lamp controller lamps and lanterns
Power supply output wiring terminal is exported powers to lamps and lanterns.The break-make of relay coil electric current is controlled by microcontroller in Fig. 3 to realize lamp
Has the off and on of power supply.When relay powers off, lamp current flows through current transformer source side, is paid in current transformer
Side generates corresponding electric current on connecting terminal 2 and 4.The turn ratio of current transformer is 1:200（Source side：Secondary side）；With electric current
510 ohm of the sample resistance R6 in parallel of secondary side connecting terminal 2 and 4 of mutual inductor, voltage signal is converted by current signal；Pass through
Two diode D4 and D3 inverse parallels carry out amplitude limit to voltage signal, are exported by connecting terminal PC4.
Referring to Fig. 5, the software function control of LoRa wireless single-light controllers 3 includes the following steps：
Step 1：LoRa is wireless, and tunable optical single-lamp controller receives the wireless hairs of coordinator 2 of the LoRa consistent with own net number
After the wireless command information come, first determine whether order is to read lamp failure status command, is adopted if it is, starting ADC
Sample, and operation troubles determining program carries out lamp failure judgement.It is wireless to network LoRa to be then back to lamp failure status information
Coordinator 2, if there is lamp failure, can also auto-returned failure lamps and lanterns location information.
Step 2：If not lamp failure status command is read, then judge whether order is lamp light-regulating order, if
It is that then the wireless tunable optical single-lamp controllers of LoRa are exported the LED lamp brightness adjustment control being attached thereto by DA light-adjusting modules 34 and believed
It number is smoothly dimmed, required light modulation value is transferred in 3 seconds.
Step 3：Dimmer command is carried out if not to lamps and lanterns, then judges whether order is power source switch for lamp set control life
It enables, if it is, relay module 35 makes corresponding action, control lamp power is opened or closed.
Step 4：If not control power source switch for lamp set order, then judge whether to be modification meshed network parameter command,
If it is, the wireless tunable optical single-lamp controller online modification own net parameters of LoRa, restart automatically after the completion of modification.
Step 5：If not meshed network parameter command is changed, then the wireless tunable optical single-lamp controllers of LoRa are converted to
Wireless receiving pattern waits for new wireless messages to arrive.
It these are only the preferred embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification made by all within the spirits and principles of the present invention,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of wireless single lamp control system based on LoRa technologies, which is characterized in that including system host（1）, LoRa is wireless
Coordinator（2）With LoRa wireless single-light controllers（3）, the system host（1）With the wireless coordinators of the LoRa（2）By total
Line serial communication, the wireless coordinators of LoRa（2）With the LoRa wireless single-light controllers（3）By wireless network connection,
The LoRa wireless single-light controllers（3）It is connect with external lamps and lanterns.
2. a kind of wireless single lamp control system based on LoRa technologies according to claim 1, which is characterized in that described
LoRa wireless single-light controllers（3）Including power module, LoRa wireless modules（32）, microcontroller（33）, light-adjusting module（34）, after
Electrical appliance module（35）And current acquisition module（36）, the power module respectively with the LoRa wireless modules（32）, the tune
Optical module（34）, the relay module（35）And the microcontroller（33）Connection is to provide electric power, the microcontroller（33）
Respectively with the relay module（35）, the current acquisition module（36）With the light-adjusting module（34）Connection, the light modulation
Module（34）With the current acquisition module（36）It is connect with external lamps and lanterns.
3. a kind of wireless single lamp control system based on LoRa technologies according to claim 2, which is characterized in that the electricity
Source module includes that 220V turns 12V power modules（311）Turn 3.3V power modules with 12V（312）, the 220V turns 12V power supply moulds
Block（311）Turn 3.3V power modules with the 12V（312）And the relay module（35）Connection, the 12V turn 3.3V electricity
Source module（312）With the microcontroller（33）, the light-adjusting module（34）And the LoRa wireless modules（32）Connection.
4. a kind of wireless single lamp control system based on LoRa technologies according to claim 2, which is characterized in that the tune
Optical module（34）Including resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, capacitance C1, capacitance C2, fuse F1, two poles
Pipe D1, diode D2, triode Q1, zener diode U1 and amplifier chip U2 compositions, the one end resistance R1 is inputted as pwm signal
End, the other end are connect with triode Q1 base stages；The collector of triode Q1 and one end of resistance R2, one end of R3 and voltage stabilizing two
The cathode of pole pipe connects, and the resistance R2 other ends are connect with 3.3V power supplys, the other end of resistance R3 and one end of capacitance C1 and fortune
Put the first pin connection of chip U2, emitter and the anode of zener diode U1, the other end of capacitance C1, the electricity of triode Q1
One end, one end of capacitance C2 and the second pin of amplifier chip U2 of resistance R5 is connected and is grounded；The other end and fortune of capacitance C2
The second pin for putting chip U2 connects and connects 12V power supplys；The other end of resistance R5 respectively with the one end resistance R4 and amplifier chip
The third pin of U2 connects, the other end of resistance R4 and the 4th pin of amplifier chip U2, the one end fuse F1, diode D1
The anode connection of cathode and diode D2；The cathode of the plus earth of diode D1, diode D2 connects 12V power supplys, insurance
The silk F1 other ends are as signal output end.
5. a kind of wireless single lamp control system based on LoRa technologies according to claim 2, which is characterized in that the electricity
Flow acquisition module（36）Including current transformer H1, resistance R6, resistance R7, resistance R8, diode D3, diode D4 and capacitance
Input terminal, third pin output end as power firestreak of the first pin of C3, current transformer H1 as power firestreak, electricity
Hinder one end and the second pin of current transformer H1 of R6, one end of capacitance C3, the cathode of diode D3, diode D4 anode
It connects and is connected to microcontroller（33）, the 4th pin, the other end of capacitance C3, the diode D3 of the other end and current transformer H1
Anode, the cathode of diode D4, one end of resistance R7 and resistance R8 one end connection；The other end of resistance R7 is grounded；Electricity
The other end of resistance R8 is connect with 3.3V power supplys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218010.0A CN108337779A (en) | 2018-03-16 | 2018-03-16 | A kind of wireless single lamp control system based on LoRa technologies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218010.0A CN108337779A (en) | 2018-03-16 | 2018-03-16 | A kind of wireless single lamp control system based on LoRa technologies |
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| CN108337779A true CN108337779A (en) | 2018-07-27 |
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| CN201810218010.0A Pending CN108337779A (en) | 2018-03-16 | 2018-03-16 | A kind of wireless single lamp control system based on LoRa technologies |
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| CN112638017A (en) * | 2020-12-21 | 2021-04-09 | 中津沛科建设股份有限公司 | Illumination monitoring method and device |
| CN113938348A (en) * | 2021-10-12 | 2022-01-14 | 深圳市丛文安全电子有限公司 | Wireless communication method and communication system based on LoRa technology |
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