CN108092387A - A kind of LED street lamp control device and its control method - Google Patents
A kind of LED street lamp control device and its control method Download PDFInfo
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- CN108092387A CN108092387A CN201711132642.7A CN201711132642A CN108092387A CN 108092387 A CN108092387 A CN 108092387A CN 201711132642 A CN201711132642 A CN 201711132642A CN 108092387 A CN108092387 A CN 108092387A
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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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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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses LED street lamp control device and its control method, this method includes：According to the voltage value of the effective voltage value of solar panels and lithium battery, judge whether to control the work of solar panels discharge circuit, charge for lithium battery；According to the voltage value of lithium battery, control the brightness of LED street lamp, start clocking capability, when reach turn off the light the time when, then stop timing and close LED street lamp.The device includes MCU process circuits, solar panels voltage detecting circuit and charging and discharging lithium battery electric quantity detecting circuit, the MCU process circuits are connected to power supply circuit, constant current driver circuit for LED, solar panels discharge circuit and charging and discharging lithium battery circuit, solar panels voltage detecting circuit is connected between MCU process circuits and solar panels discharge circuit, and charging and discharging lithium battery electric quantity detecting circuit is connected between MCU process circuits and charging and discharging lithium battery circuit.The present invention can reduce useless power consumption, enhance energy-saving effect, can be widely applied in LED control fields.
Description
Technical field
The present invention relates to LED control technologies more particularly to a kind of LED street lamp control device and its control methods.
Background technology
The lamp of intelligent lamp light controller (i.e. LED light control device), also referred to as programmable lamp dimmer, i.e. controller
Light path sequence is can to modify according to the needs of user, for example, the modification speed of light flash, the time, style, it is synchronous with
It is asynchronous etc..Also, the controller has good autgmentability, can need progress polylith control panel combination according to user
Synchronization, asynchronous operation etc., to reach higher requirement.In general, the controller uses reliable and stable microprocessor chip, such as
51 microcontrollers, as hardware controls core, equipped with corresponding light program in the microprocessor chip, and host computer can be by micro-
The communication interface that processor chips carry is modified to the light program or burning again.
At present, it is energy saving and environmentally friendly in order to achieve the purpose that, solar panels module can be added in LED street lamp control device, it is real
For existing luminous energy to electric transformation of energy, the electric energy obtained after conversion can be that accumulator (such as lithium battery) charges.However, existing LED roads
In lamp control device and without control technology effectively, intelligent, therefore it is easy to cause LED street lamp control device and generates excessively
Useless power consumption, that is to say, that current LED street lamp control device is still difficult to meet high power conservation requirement.
The content of the invention
In order to solve the above-mentioned technical problem, the object of the present invention is to provide a kind of LED street lamp control device and its controlling parties
Method reduces useless power consumption, greatly improves energy-saving effect.
First technical solution of the present invention is：A kind of LED street lamp control device, including MCU process circuits, the sun
Can plate voltage detecting circuit and charging and discharging lithium battery electric quantity detecting circuit, the MCU process circuits be connected to power supply circuit,
Constant current driver circuit for LED, solar panels discharge circuit and charging and discharging lithium battery circuit, the solar panels voltage detecting circuit
It is connected between MCU process circuits and solar panels discharge circuit, the charging and discharging lithium battery electric quantity detecting circuit is connected to MCU
Between process circuit and charging and discharging lithium battery circuit；
The MCU process circuits are used to obtain the effective voltage value of solar panels and the voltage value of lithium battery；Root
According to the effective voltage value of the solar panels acquired and the voltage value of lithium battery, judge whether that solar panels is controlled to put
Circuit works, so as to be charged by charging and discharging lithium battery circuit for lithium battery；When the solar panels for judging to acquire
Effective voltage value meets when turning on light condition, and according to the voltage value of lithium battery, LED street lamp is controlled with different control optical modes
Brightness and start clocking capability, when reach turn off the light the time when, then stop timing and close LED street lamp.
Further, the effective voltage value for obtaining solar panels, specifically includes：
Acquisition solar panels function of voltage is called, multiple solar panels are collected by solar panels voltage detecting circuit
Voltage value carries out multiple solar panels voltage values for collecting amplitude limit value leaching interference processing up and down, so as to from multiple
After screening removes maximum and minimum value in solar panels voltage value, solar panels average voltage is calculated；Wherein, calculate
Solar panels average voltage be solar panels effective voltage value.
Further, the voltage value for obtaining lithium battery, specifically includes：
Acquisition charging and discharging lithium battery flow function is called, multiple lithiums are collected by charging and discharging lithium battery electric quantity detecting circuit
Battery voltage value and multiple sampling resistor voltage values；
Multiple lithium battery voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple lithiums
After screening removes maximum and minimum value in battery voltage value, lithium battery voltage average value is calculated；
Multiple sampling resistor voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple
After screening removes maximum and minimum value in sampling resistor voltage value, sampling resistor average voltage is calculated；
It calls and calculates lithium battery flow function, according between lithium battery voltage average value and sampling resistor average voltage
Voltage difference, charging and discharging currents are calculated, then in conjunction with working time and the charging and discharging currents that are calculated, lithium is calculated
The voltage value of battery.
Further, the voltage value of the effective voltage value for the solar panels that the basis acquires and lithium battery,
Judge whether to control the work of solar panels discharge circuit, it is specific so as to be charged by charging and discharging lithium battery circuit for lithium battery
Including：
When the effective voltage value for the solar panels for judging to acquire is more than or equal to charging setting value, then judge to obtain
Whether the voltage value of obtained lithium battery belongs to full power state；
When the voltage value for judging lithium battery belongs to full power state, then solar panels discharge circuit not work is controlled
Make, so as to not charge to lithium battery；
When the voltage value for judging lithium battery is not belonging to full power state, then solar panels discharge circuit work is controlled
Make, and lithium battery charging function pair lithium battery is called to charge, be until the voltage value of lithium battery belongs to full power state
Only.
Further, it is described when the effective voltage value for the solar panels for judging to acquire meets and turns on light condition, according to
The voltage value of lithium battery controls the brightness of LED street lamp with different control optical mode, specifically includes：
When the effective voltage value for the solar panels for judging to acquire is less than or equal to low voltage set value, lithium electricity is called
Tank discharge function carries out control of turning on light, and judges whether the voltage value of lithium battery is more than or equal to electricity setting value, if so,
Constant current driving function, driving LED street lamp work are dimmed using PWM, and makes the brightness of LED street lamp as 100%；Conversely, it then utilizes
PWM dimming energy-savings modularity function starts intelligent power saving pattern, driving LED street lamp work, and makes the brightness of LED street lamp be
50%.
Further, the solar panels discharge circuit include the first PMOS tube, the 9th capacitance, second resistance, the 5th capacitance,
First capacitance, the first NMOS tube, the 4th resistance, the 6th capacitance and the second capacitance；
The drain electrode of first PMOS tube is as solar panels interface end, and the source electrode of first PMOS tube is respectively with the 5th
One end of the anode of capacitance and the first capacitance connects, and the grid of first PMOS tube and one end of second resistance connect, described
The other end of second resistance is connected with one end of the 9th capacitance；The drain electrode of first NMOS tube connects with one end of the first capacitance
It connects, the grid of first NMOS tube is connected with one end of the 4th resistance, and the source electrode of first NMOS tube is electric with the 6th respectively
One end of the anode of appearance and the second capacitance connects；The other end of 9th capacitance, the cathode of the 5th capacitance, the first capacitance it is another
The other end of one end, the cathode of the 6th capacitance and the second capacitance connects GND ends；
The other end of 4th resistance is connected with MCU process circuits, one end and the lithium battery charge and discharge of second capacitance
Circuit connects, and one end of first capacitance is connected with solar panels voltage detecting circuit.
Further, the solar panels discharge circuit further includes the 11st capacitance, a termination GND of the 11st capacitance
End, another termination PEGND ends of the 11st capacitance.
Further, the charging and discharging lithium battery circuit include first resistor, the second PMOS tube, 3rd resistor, the tenth capacitance,
7th capacitance, the 3rd capacitance, the second NMOS tube, the 5th resistance, the 8th capacitance and the 4th capacitance；
One end of the first resistor as lithium battery interface end, the other end of the first resistor and the second PMOS tube
Drain electrode connection, the one end of the source electrode of second PMOS tube respectively with the anode of the 7th capacitance and the 3rd capacitance are connected, and described the
The grid of two PMOS tube and one end of 3rd resistor connect, and the other end of the 3rd resistor is connected with one end of the tenth capacitance；
The drain electrode of second NMOS tube is connected with one end of the 3rd capacitance, the grid of second NMOS tube and one end of the 5th resistance
Connection, the one end of the source electrode of second NMOS tube respectively with the anode of the 8th capacitance and the 4th capacitance are connected；Tenth electricity
The other end of appearance, the cathode of the 7th capacitance, the other end of the 3rd capacitance, the other end of the cathode of the 8th capacitance and the 4th capacitance are equal
Connect GND ends；
The other end of 5th resistance is connected with MCU processors, one end and the LED constant current driving electricity of the 4th capacitance
The power end connection on road, the both ends of the first resistor are connected with charging and discharging lithium battery electric quantity detecting circuit.
Further, the solar panels discharge circuit further includes solar panels input interface, and the solar panels input connects
First pin of mouth is connected with the drain electrode of the first PMOS tube, and the second pin of the solar panels input interface connects GND ends；
The charging and discharging lithium battery circuit further includes lithium battery input interface, the first pin of the lithium battery input interface
It is connected with one end of first resistor, the second pin of the lithium battery input interface connects GND ends.
Second technical solution of the present invention is：A kind of control method of LED street lamp control device, this method include
Following steps：
MCU process circuits obtain the effective voltage value of solar panels and the voltage value of lithium battery；
MCU process circuits according to the effective voltage value of the solar panels acquired and the voltage value of lithium battery,
Judge whether to control the work of solar panels discharge circuit, so as to charge for lithium battery by charging and discharging lithium battery circuit；
When MCU process circuits judge the effective voltage value of the solar panels acquired meet turn on light condition when, according to
The voltage value of lithium battery, with different control optical modes come control the brightness of LED street lamp and start clocking capability, when up to
To turn off the light the time when, then stop timing and close LED street lamp.
The advantageous effect of apparatus of the present invention and method is：The control technology of the present invention passes through solar panels voltage detecting circuit
And charging and discharging lithium battery electric quantity detecting circuit is so as to collecting the current electricity of the effective voltage value of solar panels and lithium battery
Magnitude then according to the effective voltage value of solar panels and the voltage value of lithium battery acquired, judges whether to control
Solar panels discharge circuit work processed, so as to be charged by charging and discharging lithium battery circuit for lithium battery；When judging to acquire
The effective voltage values of solar panels meet when turning on light condition, according to the voltage value of lithium battery, with different control optical modes
Come control the brightness of LED street lamp and start clocking capability, when reach turn off the light the time when, then stop timing and close LED roads
Lamp.It can be seen that by using the present invention control device and method, without persistently make solar panels for lithium battery charging, together
When without persistently make lithium battery for constant current driver circuit for LED power, i.e., need not LED street lamp be opened always, it can also pressing
According to the actual brightness of environment, the brightness of LED street lamp is controlled with corresponding control optical mode, and to lighting time timing, when up to
To turn off the light the time when, then close LED street lamp, so can then greatly save excessive idle work, realize intelligent power saving photoelectric integral road
Lamp controls, and meets the power conservation requirement being increasingly good at.
Description of the drawings
Fig. 1 is a kind of structure diagram of LED street lamp control device of the present invention；
Fig. 2 is a specific embodiment electric circuit construction schematic diagram of power supply circuit in Fig. 1；
Fig. 3 is a specific embodiment electric circuit construction schematic diagram of MCU process circuits in Fig. 1；
Fig. 4 is a specific embodiment electric circuit construction schematic diagram of constant current driver circuit for LED in Fig. 1；
Fig. 5 is a specific embodiment structure diagram of LED constant current driving output interface in Fig. 1；
Fig. 6 is a specific embodiment electric circuit construction schematic diagram of solar panels discharge circuit in Fig. 1；
Fig. 7 is a specific embodiment structure diagram of solar panels input interface in Fig. 1；
Fig. 8 is a specific embodiment electric circuit construction schematic diagram of solar panels voltage detecting circuit in Fig. 1；
Fig. 9 is a specific embodiment electric circuit construction schematic diagram of charging and discharging lithium battery circuit in Fig. 1；
Figure 10 is a specific embodiment structure diagram of lithium battery input interface in Fig. 1；
Figure 11 is a specific embodiment structure diagram of charging and discharging lithium battery electric quantity detecting circuit in Fig. 1；
Figure 12 is a kind of step flow diagram of the control method of LED street lamp control device of the present invention；
Figure 13 is a kind of specific embodiment steps flow chart signal of control method of LED street lamp control device of the present invention
Figure.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of LED street lamp control device, including MCU process circuits, solar panels voltage detecting circuit and
Charging and discharging lithium battery electric quantity detecting circuit, the MCU process circuits are connected to power supply circuit, constant current driver circuit for LED, too
Positive energy plate discharge circuit and charging and discharging lithium battery circuit, the solar panels voltage detecting circuit are connected to MCU process circuits
Between solar panels discharge circuit, the charging and discharging lithium battery electric quantity detecting circuit is connected to MCU process circuits and lithium battery
Between charge-discharge circuit；
The MCU process circuits are used to obtain the effective voltage value of solar panels and the voltage value of lithium battery；Root
According to the effective voltage value of the solar panels acquired and the voltage value of lithium battery, judge whether that solar panels is controlled to put
Circuit works, so as to be charged by charging and discharging lithium battery circuit for lithium battery；When the solar panels for judging to acquire
Effective voltage value meets when turning on light condition, and according to the voltage value of lithium battery, LED street lamp is controlled with different control optical modes
Brightness and start clocking capability, when reach turn off the light the time when, then stop timing and close LED street lamp.
The preferred embodiment of the present apparatus is further used as, the effective voltage value for obtaining solar panels is specific to wrap
It includes：
Acquisition solar panels function of voltage is called, multiple solar panels are collected by solar panels voltage detecting circuit
Voltage value carries out multiple solar panels voltage values for collecting amplitude limit value leaching interference processing up and down, so as to from multiple
After screening removes maximum and minimum value in solar panels voltage value, solar panels average voltage is calculated；Wherein, calculate
Solar panels average voltage be solar panels effective voltage value.
The preferred embodiment of the present apparatus is further used as, the voltage value for obtaining lithium battery specifically includes：
Acquisition charging and discharging lithium battery flow function is called, multiple lithiums are collected by charging and discharging lithium battery electric quantity detecting circuit
Battery voltage value and multiple sampling resistor voltage values；
Multiple lithium battery voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple lithiums
After screening removes maximum and minimum value in battery voltage value, lithium battery voltage average value is calculated；
Multiple sampling resistor voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple
After screening removes maximum and minimum value in sampling resistor voltage value, sampling resistor average voltage is calculated；
It calls and calculates lithium battery flow function, according between lithium battery voltage average value and sampling resistor average voltage
Voltage difference, charging and discharging currents are calculated, then in conjunction with working time and the charging and discharging currents that are calculated, lithium is calculated
The voltage value of battery.
It is further used as the preferred embodiment of the present apparatus, the effective voltage value for the solar panels that the basis acquires
And the voltage value of lithium battery, judge whether to control the work of solar panels discharge circuit, so as to pass through charging and discharging lithium battery
Circuit charges for lithium battery, specifically includes：
When the effective voltage value for the solar panels for judging to acquire is more than or equal to charging setting value, then judge to obtain
Whether the voltage value of obtained lithium battery belongs to full power state；
When the voltage value for judging lithium battery belongs to full power state, then solar panels discharge circuit not work is controlled
Make, so as to not charge to lithium battery；
When the voltage value for judging lithium battery is not belonging to full power state, then solar panels discharge circuit work is controlled
Make, and lithium battery charging function pair lithium battery is called to charge, be until the voltage value of lithium battery belongs to full power state
Only.
The preferred embodiment of the present apparatus is further used as, it is described when the effective electricity for judging the solar panels acquired
Pressure value meets when turning on light condition, and according to the voltage value of lithium battery, the bright of LED street lamp is controlled with different control optical modes
Degree, specifically includes：
When the effective voltage value for the solar panels for judging to acquire is less than or equal to low voltage set value, lithium electricity is called
Tank discharge function carries out control of turning on light, and judges whether the voltage value of lithium battery is more than or equal to electricity setting value, if so,
Constant current driving function, driving LED street lamp work are dimmed using PWM, and makes the brightness of LED street lamp as 100%；Conversely, it then utilizes
PWM dimming energy-savings modularity function starts intelligent power saving pattern, driving LED street lamp work, and makes the brightness of LED street lamp be
50%.
Based on above device, a kind of control method of LED street lamp control device, this method comprises the following steps：
MCU process circuits obtain the effective voltage value of solar panels and the voltage value of lithium battery；
MCU process circuits according to the effective voltage value of the solar panels acquired and the voltage value of lithium battery,
Judge whether to control the work of solar panels discharge circuit, so as to charge for lithium battery by charging and discharging lithium battery circuit；
When MCU process circuits judge the effective voltage value of the solar panels acquired meet turn on light condition when, according to
The voltage value of lithium battery, with different control optical modes come control the brightness of LED street lamp and start clocking capability, when up to
To turn off the light the time when, then stop timing and close LED street lamp.
Apparatus of the present invention are further elaborated below in conjunction with optimum embodiment.
As shown in Figure 1, a kind of LED street lamp control device, including MCU process circuits, the MCU process circuits connect respectively
There are power supply circuit, constant current driver circuit for LED, solar panels discharge circuit and charging and discharging lithium battery circuit.Wherein, the sun
Energy plate discharge circuit is that lithium battery charges by charging and discharging lithium battery circuit, and the lithium battery is by charging and discharging lithium battery circuit
Constant current driver circuit for LED is powered.
For above-mentioned power supply circuit, MCU process circuits, constant current driver circuit for LED, solar panels discharge circuit, the sun
Can plate voltage detecting circuit, charging and discharging lithium battery circuit and charging and discharging lithium battery electric quantity detecting circuit, they it is specific preferably
Shown in being described below.
1., power supply circuit
Specifically, the power supply circuit is substantially in-line power circuit module, is mainly used for providing for MCU process circuits
+ 5V operating voltages.
As shown in Fig. 2, the power supply circuit includes the 13rd resistance R13, the 18th resistance R18, adjustable output voltage
DC/DC switching regulator ICs U4, the 26th capacitance C26, the 17th resistance R17, the 27th capacitance C27, the 3rd inductance L3,
3rd diode D3 and the 22nd capacitance C22, and the connection relation between them is as shown in Figure 2.Wherein, capacitance C22
Voltage output end of the both ends as power supply circuit, output+5V operating voltages.
For the power supply circuit, operation principle is：When providing input Vch-disch (constant voltage source), i.e. U4
VCC when terminating into Vch-disch, U4 is the DC/DC switch voltage-stabilizing device (models of an adjustable output voltage
MC33063), internal reference reference voltage is 1.25V；Wherein, U4, L3 and D3 form on-off circuit, pass through external divider resistance
R13 and R18 adjusts output voltage Uo, and formula is as follows：Uo=1.25V* (1+R13/R18).For example, when output voltage is 5V, 5V
=1.25* (1+3.6K Ω/1.2K Ω), i.e. R13=3.6K Ω, R18=1.2K Ω.
2., MCU process circuits
As shown in figure 3, the MCU process circuits realize that U3 has been connected to source crystal oscillator mould using MCU microcontrollers U3
Block (including the 15th capacitance C15, the 21st capacitance C21 and crystal oscillator Y1) and ISP interfaces J3；The MCU monolithics owner
It is used to output control signals to constant current driver circuit for LED, solar panels discharge circuit and charging and discharging lithium battery circuit；Detection
The electric signal collected from solar panels discharge circuit, charging and discharging lithium battery circuit.
Specifically, for MCU process circuits, operation principle is：For 8 MCU microcontroller, (model is U3
STM8S103F3-TSSOP2), major function has STM8 cores, 8 bit data bus width, maximum clock stroboscopic 16MHZ, 8KB
Program storage, 1KB random access memorys, 10 ADC resolution ratio, working power scope 2.95V-5.5V, operating temperature model
Enclose -40~+85 DEG C, data-interface have an I2C, SPI, UART, multichannel hardware PWM, external interrupt and 3 timers etc.；
Wherein, I/O-PD3, I/O-PD2 and I/O-PC4 are ADC Analog-digital Converter interface pins, i.e. ADC translation interfaces,
These three pins of corresponding A DCvldk, ADCvbtin and ADCvbt respectively, are mainly used for solar panels, lithium battery and resistance
Input analog voltage is converted into numerical data；I/O-PC5, I/O-PC6 and I/O-PC7 are defeated for pwm pulse width modulation generator
Outgoing interface pin, i.e. PWM output interfaces correspond to PWMled, PWMdch and PWMch these three pins respectively, wherein, PWMled is born
Duty adjusts output PWM value to control LED luminance, PWMch be responsible for adjusting output PWM value control solar panels discharge circuit whether to
Lithium battery charges, and PWMdch is responsible for adjusting output PWM value and controls whether to supply electricity to constant current driver circuit for LED.In addition, MCU is selected
External crystal-controlled oscillation is as clock signal, the external oscillating circuit of Y1, C15 and C21 composition；17th capacitance C17 and the 18th capacitance C18
Effect be filtering and bypass；12nd resistance R12 and the 20th capacitance C20 then forms RC low-level reset circuits, and effect is
Reset signal is provided when MCU microcontrollers power on until after power good, cancels reset signal；ISP interfaces J3 can for on-line system
Programming interface, for by the FLASH sections of program burn writing to MCU.
3., constant current driver circuit for LED
As shown in figure 4, constant current driver circuit for LED is used to export constant current in certain output voltage range, simultaneously
The change that brightness adjustment control realizes LED luminance can be carried out to ENA feet by pwm signal.Wherein, the I/O-PC5 of MCU microcontrollers,
That is PWMled is connected with the ENA pins of driving chip in constant current driver circuit for LED.
Specifically, for constant current driver circuit for LED, operation principle is：U1, U2 are a constant current great power LED switches
Driver (model is NCL30160), built-in MOSFET, high input voltage, high switching frequency, band PWM dimming functions and support
Height refreshes stroboscopic, can be adjusted LED current by resistance or pwm signal；
As the structure of two paths of LED constant-current drive circuit in Fig. 4 with principle is, therefore, herein only for wherein one
Road driving circuit carries out principle elaboration：First driving chip U1, the first inductance L1, current sampling resistor R6 (the 6th resistance) and R7
(the 7th resistance) forms the voltage-dropping type constant-current LED control circuit of the continuous inductive current pattern of a self-oscillation；When internal power is opened
Conducting is closed, Vdch electric currents flow to ground by LED, the first inductance L1, internal power switch and current sampling resistor R6, R7；When interior
Portion's power switch shut-off, Vdch electric currents form one by first inductance L1, LED and Schottky diode D1 (the first diode)
Discharge loop；8th resistance R8 and the 13rd capacitance C13, their effect are the time that internal power is set to switch；Inside ginseng
Reference voltage is examined as 0.2V, output current Io is adjusted by current sampling resistor R6, R7, formula is as follows：Io=0.2V/ (R6*
R7/R6+R7).For example, output current is 714mA=0.2V/ (0.56 Ω *, 0.56 Ω /+0.56 Ω of 0.56 Ω), i.e. R6=R7=
0.56Ω。
As shown in figure 5, constant current driver circuit for LED is connected with LED constant current driving output interface J4.Specifically, J4 is 4P's
2.54 terminals, for accessing LED light source module.
4., solar panels discharge circuit
For the solar panels discharge circuit, with the anti-reverse defencive function of solar panels component and whether
The control function to charge to lithium battery.
As shown in fig. 6, the solar panels discharge circuit include the first PMOS tube Q1, the 9th capacitance C9, second resistance R2,
5th capacitance C5, the first capacitance C1, the first NMOS tube Q2, the 4th resistance R4, the 6th capacitance C6 and the second capacitance C2；
The drain electrode (being equivalent to VLDKin ends) of the first PMOS tube Q1 is used as solar panels interface end, the first PMOS
The one end of the source electrode of pipe Q1 respectively with the anode of the 5th capacitance C5 and the first capacitance C1 is connected, the grid of the first PMOS tube Q1
It is connected with one end of second resistance R2, the other end of the second resistance R2 is connected with one end of the 9th capacitance C9；
The other end, the cathode of the 5th capacitance C5 and the other end of the first capacitance C1 of the 9th capacitance C9 meets GND
End；
The drain electrode of the first NMOS tube Q2 is connected with one end of the first capacitance C1, the grid of the first NMOS tube Q2 with
One end connection of 4th resistance R4, the source electrode of the first NMOS tube Q2 respectively with the anode of the 6th capacitance C6 and the second capacitance C2
One end connection, the cathode of the 6th capacitance C6 and the other end of the second capacitance C2 connect GND ends.Specifically, C9, C1, C2
For polarity free capacitor, C5, C6 are polarized capacitance.In the present embodiment, the both ends of capacitance C2 are as solar panels discharge circuit
Discharge end, be connected with the charging end of charging and discharging lithium battery circuit, so as to by charging and discharging lithium battery circuit for lithium battery charging,
I.e. one end of C2 and one end of C3 connect.
By above-mentioned as it can be seen that the concrete operating principle of solar panels discharge circuit of the invention is：This solar panels electric discharge electricity
The reverse connection prevention protection circuit being made of Q1, R2, C9 is equipped in road, therefore, when solar panels just connect, the extremely low electricity of G of Q1 pipes
Flat, Q1 pipe ON operations, the electric current of solar panels output flows to cathode from VLDKin ends by discharge circuit forming circuit, this
When, discharge circuit can work normally；When solar panels reversal connection, the G extremely high level of Q1 pipes, Q1 pipes cut-off work is put at this time
Circuit cannot be formed into a loop, and circuit is made to be in off position, to realize the protection of solar panels and circuit.As it can be seen that this hair
Bright solar panels discharge circuit has reverse connection prevention protection circuit, can to avoid when the solar panels reversal connection generating device damage,
The even situation of burn-up greatly improves the safety and reliability of product work.Moreover, the reverse connection prevention protection circuit of the present invention is
Metal-oxide-semiconductor is selected therefore, to make discharge circuit not only small power consumption come what is realized, achieve the effect that it is energy saving, but also with passing through electric current
The advantages such as greatly, pressure drop is small, temperature is low.
In addition, solar panels discharge circuit is provided with Q2, R4, C6 and C2, therefore, input low level/height electricity can be passed through
Ordinary mail number makes Q2 be on/cut-off state to the grid of Q2, so can according to actual needs, solar panels to be controlled to put
Whether circuit charges to lithium battery, i.e., solar panels discharge circuit charges without persistently exporting electric energy for lithium battery, not only greatly
It is big to improve flexibility and the convenience that circuit uses, and can also further achieve the effect that energy saving.
Preferably, the solar panels discharge circuit further includes the 11st capacitance C11, and the one of the 11st capacitance C11
GND ends are terminated, another termination PEGND ends of the 11st capacitance C11 can so play the role of circuit protection.
Preferably, as shown in fig. 7, the solar panels discharge circuit further includes solar panels input interface J1, it is described too
The first pin (including pin 3,4) of positive energy plate input interface J1 is connected, the solar panels with the drain electrode of the first PMOS tube Q1
The second pin (including pin 1,2) of input interface J1 connects GND ends.Specifically, J1 is 2.54 terminals of 4P, for accessing too
Positive energy plate.
The preferred embodiment of this circuit, the first capacitance C1 and/or the second capacitance C2 are further used as tile electricity
Hold, the 5th capacitance C5 and/or the 6th capacitance C6 is electrolytic capacitor, their effect is to filter out and stablize input source.
In the present embodiment, the I/O-PC7 of MCU microcontrollers, i.e. PWMch pins, are connected with the other end of R4, MCU monolithics
Machine is exported low level/high level signal by I/O-PC7, and is exported by R4 to the grid of Q2.
5., solar panels voltage detecting circuit
Specifically, the solar panels voltage detecting circuit is mainly used for through electric resistance partial pressure one less than+5V voltage sources
To the ADC analog-digital converter collection voltages of MCU.The solar panels voltage detecting circuit is connected to one end of the first capacitance
Between MCU process circuits.
As shown in figure 8, the solar panels voltage detecting circuit include the 14th resistance R14, the 19th resistance R19 and
23rd capacitance C23, one end of the 14th resistance R14 are connected with one end of the first capacitance C1, the 14th resistance
The other end of R14 respectively with one end of the 19th resistance R19, one end of the 23rd capacitance C23 and MCU process circuits
One input terminal (the first ADC translation interfaces) connects；The other end of the 19th resistance R19 and the 23rd capacitance C23's
The other end connects GND ends.In the present embodiment, the I/O-PD3 (the first ADC translation interfaces) of the other end of R14 and MCU microcontrollers
Connection, i.e., the other end of R14 is connected with ADCvldk pins.
For above-mentioned solar panels voltage detecting circuit, operation principle is：By at the input voltage of solar panels,
Vldk ends i.e. in figure, that is, one end of C1, receiving voltage signal, and export one after two divider resistances R14 and R19
A voltage source is to MCU；Wherein, the effect of C23 is to filter out and stablize input source.
6., charging and discharging lithium battery circuit
For the charging and discharging lithium battery circuit, mainly have the anti-reverse defencive function of lithium battery pack and whether
Lithium battery is made to discharge to constant current driver circuit for LED, so as to the control function for constant current driver circuit for LED power supply.
As shown in figure 9, the charging and discharging lithium battery circuit include first resistor R1, the second PMOS tube Q3,3rd resistor R3,
Tenth capacitance C10, the 7th capacitance C7, the 3rd capacitance C3, the second NMOS tube Q4, the 5th resistance R5, the 8th capacitance C8 and the 4th
Capacitance C4；
One end (being equivalent to VBTin ends) of the first resistor R1 is used as lithium battery interface end, the first resistor R1's
The other end is connected with the drain electrode of the second PMOS tube Q3, the source electrode of the second PMOS tube Q3 respectively with the anode of the 7th capacitance C7 and
One end connection of 3rd capacitance C3, the grid of the second PMOS tube Q3 are connected with one end of 3rd resistor R3, the 3rd electricity
The other end of resistance R3 is connected with one end of the tenth capacitance C10；
The other end, the cathode of the 7th capacitance C7 and the other end of the 3rd capacitance C3 of the tenth capacitance C10 meets GND
End；
The drain electrode of the second NMOS tube Q4 is connected with one end of the 3rd capacitance C3, the grid of the second NMOS tube Q4 with
One end connection of 5th resistance R5, the source electrode of the second NMOS tube Q4 anode and the 4th capacitance C4 with the 8th capacitance C8 respectively
One end connection, the cathode of the 8th capacitance C8 and another termination GND ends of the 4th capacitance C4.Specifically, the both ends of C3 are made
For the charging end of charging and discharging lithium battery circuit, it is connected with the output terminal of solar panels discharge circuit, in the present embodiment, C3's
One end and one end of C2 connect；C10, C3, C4 are polarity free capacitor, and C7, C8 are polarized capacitance；The I/O- of MCU microcontrollers
PC6, i.e. PWMdch pins, are connected with the other end of R5, and MCU microcontrollers are defeated by low level/high level signal by I/O-PC6
Go out, and exported by R5 to the grid of Q4；Discharge end of the both ends of C4 as charging and discharging lithium battery road drives electricity with LED constant current
The power end connection on road, powers for constant current driver circuit for LED, in the present embodiment, in one end and constant current driver circuit for LED of C4
U1, U2 chip VIN ends connection.
For above-mentioned charging and discharging lithium battery circuit, operation principle is：In charging and discharging lithium battery circuit be equipped with by Q3, R3,
The reverse connection prevention protection circuit that C10 is formed, therefore, when lithium battery just connects, the G extremely low levels of Q3 pipes, Q3 ON operations, electric current
Cathode is flowed to from VBTin ends by charge-discharge circuit forming circuit；When lithium battery reversal connection, the G extremely high level of Q3 pipes, Q3 pipes
End work, charge-discharge circuit cannot be formed into a loop at this time, and circuit is made to be in off position, to realize lithium battery and circuit
Protection.As it can be seen that the charging and discharging lithium battery circuit of the present invention has reverse connection prevention protection circuit, it can be to avoid because being sent out during lithium battery reversal connection
Raw device failure or even the situation of burn-up greatly improve the safety and reliability of product work；Moreover, lithium battery of the present invention
The reverse connection prevention protection circuit of charge-discharge circuit is that metal-oxide-semiconductor is selected to realize, therefore, makes charge-discharge circuit not only small power consumption, reaches
Energy saving effect, but also have the advantages that pass through electric current is big, pressure drop is small, temperature is low etc..
In addition, being provided with Q4, R5, C8 and C4 in charging and discharging lithium battery circuit, therefore, low electricity is exported using MCU microcontrollers
The grid of flat/high level signal to Q4, it is on or off work that just can control Q4, to realize whether drive electricity to LED constant current
Road power supply control, so can according to actual needs, come control whether for constant current driver circuit for LED power, i.e., lithium battery without
Constant current driver circuit for LED power supply need to be continuously by charging and discharging lithium battery circuit, not only greatly improves the flexibility that circuit uses
And convenience, and can also further reach energy-saving effect.
The preferred embodiment of charging and discharging lithium battery circuit is further used as, the 3rd the capacitance C3 and/or C4 are tile
Capacitance, the 7th capacitance C7 and/or the 8th capacitance C8 are electrolytic capacitor, their effect is to filter out and stablize input source.
The preferred embodiment of charging and discharging lithium battery circuit is further used as, as shown in Figure 10, it is defeated to further include lithium battery
The first pin (including pin 3,4) of incoming interface J2, the lithium battery input interface J2 are connected, institute with one end of first resistor R1
The second pin for stating lithium battery input interface J2 connects GND ends (comprising pin 1,2).Specifically, J2 is 2.54 terminals of 4P, is used
In access lithium battery.
7., charging and discharging lithium battery electric quantity detecting circuit
Specifically, the charging and discharging lithium battery electric quantity detecting circuit is mainly used for electric less than+5V by electric resistance partial pressure one
Potential source gathers the voltage of lithium battery and sampling resistor to the ADC analog-digital converters of MCU, so can be by the electricity that collects
It presses that the current electricity of lithium battery is calculated.
As shown in figure 11, the charging and discharging lithium battery electric quantity detecting circuit includes lithium battery voltage Acquisition Circuit and sampling electricity
Voltage collection circuit is hindered, wherein hardware is made of two component pressures, and one of which includes two resistance R15, R20 and a capacitance
C24, another group then includes two resistance R16, R21 and a C25.Due to lithium battery voltage Acquisition Circuit and sampling resistor voltage
The structure of Acquisition Circuit is identical, therefore, to being wherein described in detail all the way.
The lithium battery voltage Acquisition Circuit includes the 15th resistance R15, the 20th resistance R20 and the 24th capacitance
C24, one end of the 15th resistance R15 are connected with one end of first resistor R1, the other end point of the 15th resistance R15
Not with second input terminal (second of one end of the 20th resistance R20, one end of the 24th capacitance C24 and MCU process circuits
ADC translation interfaces) connection；The other end of the 20th resistance R20 and the other end of the 24th capacitance C24 meet GND
End.Specifically, in the present embodiment, the other end of R15 connects with the I/O-PD2 in the 2nd ADC translation interfaces of MCU microcontrollers
It connects, i.e., the other end of R14 is connected with ADCvbtin pins.
And for sampling resistor voltage collection circuit, structure is identical with the structure of above-mentioned lithium battery voltage Acquisition Circuit,
Mainly it is made of the 16th resistance R16, the 21st resistance R21 and the 25th capacitance C25；Specifically, the sampling electricity
Hinder voltage collection circuit include the 16th resistance R16, the 21st resistance R21 and the 25th capacitance C25, the described 16th
One end of resistance R16 is connected with the other end of first resistor R1, and the other end of the 16th resistance R16 is respectively with the 21st
One end of resistance R21, one end of the 25th capacitance C25 and the connection of MCU process circuits, the 21st resistance R21's
The other end of the other end and the 25th capacitance C25 connect GND ends.
In the present embodiment, specifically (the 2nd ADC conversions connect the other end of R16 with the second input terminal of MCU process circuits
Mouthful) connection；As shown in figure 11, the other end of R16 further specifically with the I/ in the 2nd ADC translation interfaces of MCU microcontrollers
O-PC4 connections, the i.e. other end of R16 are connected with ADCvbt pins.
For above-mentioned charging and discharging lithium battery electric quantity detecting circuit, operation principle is：Pass through the input voltage in lithium battery
End and sampling resistor end, collect two voltage sources exported through two bleeder circuits to MCU, according to this collected
Two voltage values, can calculate the electric current for flowing through resistance, so as to convert the current electric quantity for drawing lithium battery.Wherein, for C24,
C25, their effect are to filter out and stablize input source.
As shown in Figure 12 and Figure 13, based on above-mentioned LED street lamp control device, a kind of controlling party of LED street lamp control device
Method, the step of preferably comprising, are as follows.
S101, beginning：System energization opens lamps and lanterns, initially enters operation program.
S102, initialization system and reducing condition：After on-delay waiting system the operation is stable, at the beginning of carrying out related register
Beginningization and definition and assigned variable, repeatedly read eeprom memory data, and judge to read whether data unanimously ensure correctly
Property, last time powered-down preceding data mode is reduced, such as：I/O mouthfuls, the initialization of the parameters such as registers and variable such as ADC, PWM, EEPROM
Define simultaneously assignment；The last time powered-down preceding lithium battery magnitude data restoring data state that EEPROM is preserved is read, to enter main journey
Sequence is prepared.
S103, main program cycle start：It is ready, circular flow function is entered by main program entrance.
S104, acquisition solar panels voltage simultaneously export virtual value processing, that is, obtain the effective voltage value of solar panels.
Preferably, the step S104 is specifically included：
Acquisition solar panels function of voltage is called, by the ADC analog-digital converters of MCU, repeatedly from solar panels electricity
Pressure detection circuit collects solar panels voltage value (collecting multiple solar panels voltage values), and is stored in array
Vldk [n] is simultaneously exported；It recalls and calculates the effective mean function of n times, amplitude limit value leaching interference up and down is carried out to n times array,
Screening removal maximin scheduling algorithm, which is averaged, draws correct effectively average value VldkE, i.e., to collect it is multiple too
Positive energy plate voltage value carries out amplitude limit value leaching interference processing up and down, so as to screen removal most from multiple solar panels voltage values
After big value and minimum value, solar panels average voltage is calculated, the solar panels average voltage calculated is solar panels
Effective voltage value VldkE.
S105, acquisition lithium battery voltage simultaneously calculate output electricity processing, that is, obtain the voltage value of lithium battery.
Preferably, the step S105 is specifically included：
Acquisition charging and discharging lithium battery flow function is called, by the ADC analog-digital converters of MCU, is repeatedly filled from lithium battery
The voltage value that discharge electricity amount detection circuit collects lithium battery and sampling resistor (gathers multiple lithium battery voltage values and more
A sampling resistor voltage value), it is stored in array VBTin [n] and Vbt [n] and exports；It recalls and calculates the effective average value letter of n times
Several to the progress of n times array, the leaching of amplitude limit value is disturbed up and down, and screening removal maximin scheduling algorithm, which is averaged, to be drawn correctly
Effective average value VTBinE and VbtE, that is, to the multiple lithium battery voltage values (sampling resistor voltage value) collected
Amplitude limit value leaching interference processing up and down is carried out, so as to the screening removal from multiple lithium battery voltage values (sampling resistor voltage value)
After maximum and minimum value, lithium battery voltage average value (sampling resistor average voltage) is calculated；It calls and calculates lithium battery
By the voltage difference between lithium battery voltage average value and sampling resistor average voltage, charge and discharge electricity is calculated in flow function
Stream then in conjunction with working time and the charge-discharge circuit being calculated, calculates and exports the voltage value BTv of lithium battery.
S106, lithium battery charging process.
Specifically, according to the voltage value of the effective voltage value of the solar panels acquired and lithium battery, judge
Solar panels discharge circuit whether is controlled to work, so as to charge by charging and discharging lithium battery circuit for lithium battery.
Preferably, the step S106 is specifically included：
One charging setting value is pre-set according to solar panels module parameter of dispatching from the factory；
Judged by the effective voltage value VldkE for reading solar panels compared with charging setting value, so as to judge to be
It is no to charge to lithium battery；
When the effective voltage value VldkE >=charging setting value for the solar panels for judging to acquire, then enter and give lithium electricity
After the charged state of pond, judge whether the voltage value of the lithium battery acquired belongs to full power state, that is, judge BTv whether be
Full electricity, BTv==100%；
When the voltage value for judging lithium battery belongs to full power state, then solar panels discharge circuit not work is controlled
Make, turn off solar panels, so as to not charge to lithium battery；
When the voltage value for judging lithium battery is not belonging to full power state, i.e., when the electricity of lithium battery is not expired also, then
The work of solar panels discharge circuit is controlled, and lithium battery charging function pair lithium battery is called to charge, until working as lithium battery
Until preceding charge value belongs to full power state.Wherein, the lithium battery charging function realizes different electricity BTv and solar panels electricity
Pressure value VldkE and select corresponding different charge mode, so as to which battery life and fast charge be protected to realize.
S107, the processing of lithium battery discharge switch lamp ought judge the effective voltage value symbol of the solar panels acquired
When running lamp bar part jointly, according to the voltage value of lithium battery, the brightness of LED street lamp is controlled with different control optical modes.
It reads VldkE values and judges to be daytime, evening or rainy days to control switch lamp, when the sun for judging to acquire
During effective voltage value VldkE≤low voltage set value of energy plate, lithium battery electric discharge function is called to carry out control of turning on light, and judges lithium
Whether the voltage value BTv of battery is more than or equal to electricity setting value, and the electricity setting value is the 30% of Full Charge Capacity；
When judging the 30% of BTv >=Full Charge Capacity, PWM light modulation constant current driving functions are called, driving LED street lamp works,
And the brightness of LED street lamp is made as 100%；
When judging BTv<Full Charge Capacity 30% when, call PWM dimming energy-saving modularity functions, start intelligent power saving pattern,
LED street lamp work is driven, and makes the brightness of LED street lamp as 50%；
Timing function of turning on light is called after opening LED, starts clocking capability, according to bright light setting time, judges whether
Close LED, i.e., when reach turn off the light the time when, then closing timing function of turning on light is called to stop timing and close LED street lamp, so as to real
Existing Energy Saving Control closes LED.
S108, end：Exit principal function.
It is obtained by above-mentioned, control device of the invention and its control method, the useless power consumption of device can be greatly reduced, and
And actual environment brightness can also be bonded and adjust the brightness of LED street lamp, reach real energy-saving effect and using flexible,
Convenience, intelligent automation ability are high.
The above are implementing to be illustrated to the preferable of the present invention, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (10)
1. a kind of LED street lamp control device, it is characterised in that：Including MCU process circuits, solar panels voltage detecting circuit and lithium
Battery charging and discharging electric quantity detecting circuit, the MCU process circuits are connected to power supply circuit, constant current driver circuit for LED, the sun
Can plate discharge circuit and charging and discharging lithium battery circuit, the solar panels voltage detecting circuit be connected to MCU process circuits with
Between solar panels discharge circuit, the charging and discharging lithium battery electric quantity detecting circuit is connected to MCU process circuits and is filled with lithium battery
Between discharge circuit；
The MCU process circuits are used to obtain the effective voltage value of solar panels and the voltage value of lithium battery；According to obtaining
The effective voltage value of the solar panels obtained and the voltage value of lithium battery judge whether to control solar panels electric discharge electricity
Road works, so as to be charged by charging and discharging lithium battery circuit for lithium battery；It is effective when the solar panels for judging to acquire
Voltage value meets when turning on light condition, and according to the voltage value of lithium battery, the bright of LED street lamp is controlled with different control optical modes
Degree and start clocking capability, when reach turn off the light the time when, then stop timing and close LED street lamp.
2. a kind of LED street lamp control device according to claim 1, it is characterised in that：It is described to obtain the effective of solar panels
Voltage value specifically includes：
Acquisition solar panels function of voltage is called, multiple solar panels voltages are collected by solar panels voltage detecting circuit
Value carries out multiple solar panels voltage values for collecting amplitude limit value leaching interference processing up and down, so as to from multiple sun
After screening removes maximum and minimum value in energy plate voltage value, solar panels average voltage is calculated；Wherein, calculate too
Positive energy plate average voltage is the effective voltage value of solar panels.
3. a kind of LED street lamp control device according to claim 1, it is characterised in that：The current electricity for obtaining lithium battery
Magnitude specifically includes：
Acquisition charging and discharging lithium battery flow function is called, multiple lithium batteries are collected by charging and discharging lithium battery electric quantity detecting circuit
Voltage value and multiple sampling resistor voltage values；
Multiple lithium battery voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple lithium batteries
After screening removes maximum and minimum value in voltage value, lithium battery voltage average value is calculated；
Multiple sampling resistor voltage values for collecting are carried out with amplitude limit value leaching interference processing up and down, so as to from multiple samplings
After screening removes maximum and minimum value in resistive voltage value, sampling resistor average voltage is calculated；
It calls and calculates lithium battery flow function, according to the electricity between lithium battery voltage average value and sampling resistor average voltage
Charging and discharging currents are calculated in pressure difference, and then in conjunction with working time and the charging and discharging currents being calculated, lithium battery is calculated
Voltage value.
4. according to a kind of any one of claim 1-3 LED street lamp control devices, it is characterised in that：It is described according to obtaining
The effective voltage value of the solar panels arrived and the voltage value of lithium battery judge whether to control solar panels discharge circuit work
Make, so as to be charged by charging and discharging lithium battery circuit for lithium battery, specifically include：
When the effective voltage value for the solar panels for judging to acquire is more than or equal to charging setting value, then judge to acquire
The voltage value of lithium battery whether belong to full power state；
When the voltage value for judging lithium battery belongs to full power state, then solar panels discharge circuit is controlled not work, from
And it does not charge to lithium battery；
When the voltage value for judging lithium battery is not belonging to full power state, then solar panels discharge circuit is controlled to work, and
Lithium battery charging function pair lithium battery is called to charge, until the voltage value of lithium battery belongs to full power state.
5. according to a kind of any one of claim 1-3 LED street lamp control devices, it is characterised in that：It is described to judge to obtain
The effective voltage value of the solar panels obtained meets when turning on light condition, according to the voltage value of lithium battery, with different controls
Optical mode controls the brightness of LED street lamp, specifically includes：
When the effective voltage value for the solar panels for judging to acquire is less than or equal to low voltage set value, lithium battery is called to put
Number carries out control of turning on light by means of emails or letters, and judges whether the voltage value of lithium battery is more than or equal to electricity setting value, if so, utilizing
PWM dims constant current driving function, driving LED street lamp work, and makes the brightness of LED street lamp as 100%；
Conversely, then starting intelligent power saving pattern, driving LED street lamp work using PWM dimming energy-savings modularity function, and make LED
The brightness of street lamp is 50%.
6. according to a kind of any one of claim 1-3 LED street lamp control devices, it is characterised in that：The solar panels are put
Circuit include the first PMOS tube, the 9th capacitance, second resistance, the 5th capacitance, the first capacitance, the first NMOS tube, the 4th resistance,
6th capacitance and the second capacitance；
The drain electrode of first PMOS tube as solar panels interface end, the source electrode of first PMOS tube respectively with the 5th capacitance
Anode and the first capacitance one end connection, one end of the grid of first PMOS tube and second resistance connects,
The other end of the second resistance is connected with one end of the 9th capacitance；The drain electrode of first NMOS tube and the first capacitance
One end connects, and the grid of first NMOS tube is connected with one end of the 4th resistance, the source electrode of first NMOS tube respectively with
One end connection of the anode and the second capacitance of 6th capacitance；The other end of 9th capacitance, the cathode of the 5th capacitance, the first electricity
The other end of the other end of appearance, the cathode of the 6th capacitance and the second capacitance connects GND ends；
The other end of 4th resistance is connected with MCU process circuits, one end and the charging and discharging lithium battery electricity of second capacitance
Road connects, and one end of first capacitance is connected with solar panels voltage detecting circuit.
7. a kind of LED street lamp control device according to claim 6, it is characterised in that：The solar panels discharge circuit is also
Including the 11st capacitance, a termination GND ends of the 11st capacitance, another termination PEGND ends of the 11st capacitance.
8. a kind of LED street lamp control device according to claim 6, it is characterised in that：The charging and discharging lithium battery circuit bag
Include first resistor, the second PMOS tube, 3rd resistor, the tenth capacitance, the 7th capacitance, the 3rd capacitance, the second NMOS tube, the 5th electricity
Resistance, the 8th capacitance and the 4th capacitance；
One end of the first resistor is as lithium battery interface end, the drain electrode of the other end of the first resistor and the second PMOS tube
Connection, the one end of the source electrode of second PMOS tube respectively with the anode of the 7th capacitance and the 3rd capacitance are connected, and described second
The grid of PMOS tube and one end of 3rd resistor connect, and the other end of the 3rd resistor is connected with one end of the tenth capacitance；Institute
The drain electrode for stating the second NMOS tube is connected with one end of the 3rd capacitance, and the grid of second NMOS tube and one end of the 5th resistance connect
It connects, the one end of the source electrode of second NMOS tube respectively with the anode of the 8th capacitance and the 4th capacitance is connected；Tenth capacitance
The other end, the cathode of the 7th capacitance, the other end, the cathode of the 8th capacitance and the other end of the 4th capacitance of the 3rd capacitance connect
GND ends；
The other end of 5th resistance is connected with MCU processors, one end of the 4th capacitance and constant current driver circuit for LED
Power end connects, and the both ends of the first resistor are connected with charging and discharging lithium battery electric quantity detecting circuit.
9. a kind of LED street lamp control device according to claim 8, it is characterised in that：The solar panels discharge circuit is also
Including solar panels input interface, the first pin of the solar panels input interface is connected with the drain electrode of the first PMOS tube, institute
The second pin for stating solar panels input interface connects GND ends；
The charging and discharging lithium battery circuit further includes lithium battery input interface, the first pin of the lithium battery input interface and
One end connection of one resistance, the second pin of the lithium battery input interface connect GND ends.
10. a kind of control method of LED street lamp control device, it is characterised in that：This method comprises the following steps：
MCU process circuits obtain the effective voltage value of solar panels and the voltage value of lithium battery；
MCU process circuits judge according to the effective voltage value of the solar panels acquired and the voltage value of lithium battery
Solar panels discharge circuit whether is controlled to work, so as to charge by charging and discharging lithium battery circuit for lithium battery；
When MCU process circuits judge the effective voltage value of the solar panels acquired meet turn on light condition when, according to lithium electricity
The voltage value in pond, with different control optical modes come control the brightness of LED street lamp and start clocking capability, when reach close
During the lamp time, then stop timing and close LED street lamp.
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| CN111682605B (en) * | 2020-06-02 | 2023-12-22 | 上海安导电子科技有限公司 | Intelligent solar charge and discharge control management device and method |
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Application publication date: 20180529 |