CN109542129A - A kind of photovoltaic two dimension braking tracking control system - Google Patents
A kind of photovoltaic two dimension braking tracking control system Download PDFInfo
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- CN109542129A CN109542129A CN201910058533.8A CN201910058533A CN109542129A CN 109542129 A CN109542129 A CN 109542129A CN 201910058533 A CN201910058533 A CN 201910058533A CN 109542129 A CN109542129 A CN 109542129A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A kind of solar opto-electronic board two dimension braking tracking control system, it is installed it is characterized in that sensor is parallel with solar opto-electronic board, actual measurement simultaneously calculates the pitch angle of solar opto-electronic board and feeds back to intelligence computation storage unit MCU towards bearing data, experience sunrise daily in the whole year of place to use is first incorporated in intelligence computation storage unit, the time of sunset and darkness, illuminance data, illuminance and it is greater than setting value, default 2.0V, theoretical position is calculated by formula, the program circuit under mode is automatically tracked according to control system, intelligence computation storage unit reads the voltage data of drop offset plate output, by the threshold value of setting and sensor voltage data comparison, judge fine day or cloudy day, and in fine day, free switching in cloudy mode；Apparatus structure is compact, and stability is high, and scalability is high, reduces injury of the starting current to motor, is accurately positioned direct sunlight direction and improves generating efficiency.Realize steady, efficient, intelligentized photovoltaic power generation mode.
Description
Technical field
The present invention relates to the photo-thermal of Solar use to acquire facility, and a kind of can be realized automatically tracks direct sunlight angle
Brake control requires the higher photo-thermal for having two dimensional motion function of efficiency to acquire equipment applied to photovoltaic power generation.
Background technique
Structure, the control circuit, sensor being currently used in the automatic following control system of solar energy photovoltaic generator
Form is:
1, it is fixed on no freedom degree and horizontally rotates mode
A kind of photovoltaic power generation mode relatively common at present is to place solar opto-electronic board using 45 degree of elevations angle of positive south orientation.By
Cutting equipment in such pose pattern can not rotate without freedom degree, therefore only can reach rated generation at 10 points to 14 points of summer
Amount.This scheme advantage is at low cost and easy for installation.Disadvantage is generated energy shakiness, and runing time is limited, in winter
The disadvantages of generated energy declines to a great extent under extreme condition.Also there is solar photoelectric board mount that can rotate horizontally, may be implemented to too
Positive orientation follows.The problem of the solar azimuth variation bring generated energy shakiness solved on partial extent.
2, the motor control of relay and field-effect tube
With the larger of solar panel, required Motor torque can also be increased with it.It is controlled using relay
3~6 times of rated current can be reached in electric motor starting and the transient current of stopping when motor, often will appear and burn fuse very
To the case where damaging motor.Field-effect tube equally has the shortcomings that starting current moment can not be inhibited to increase, frequent starting and stopping
It is easy to cause field-effect tube to damage, greatly shortens the service life of equipment in practical applications.
3, the effect of sensor
Solar automatic tracking system is surveyed gloss and is projected in terms of control method mainly based on light intensity control method at present
Identification device including impermeable baffle plate and rotating device, impermeable baffle plate is vertically in the upper bottom surface of projection identification device cabinet
On, it is equipped with the projection identification device of impermeable baffle plate projection for identification in projection identification device cabinet, projects identification device case
Body is located on rotating device, the actual height angle of the result and the sun measured, horizontal angle error within the scope of 5 °.It is existing
Solar energy tracking sensor, only there are two erect a barn door among drop offset plate.Which drop offset plate voltage just thereto turns greatly,
It goes to and equal just stops！This mode could only run well under the weather condition of daylight abundance, and it is anti-to cut no position
The function of feedback.
Summary of the invention
The object of the present invention is to provide a kind of photovoltaic two dimensions of title to brake tracking control system, keeps heat collector accurate
It is directed at the automatic reversing apparatus of direct sunlight position, is able to solve existing issue.
A kind of photovoltaic two dimension braking tracking control system, including the motor control turned to for solar opto-electronic board
Chip, sensor, intelligence computation storage unit and operator, it is characterised in that sensor is parallel with solar opto-electronic board to be installed,
Actual measurement simultaneously calculates the pitch angle of solar opto-electronic board and feeds back to intelligence computation storage unit MCU, intelligence towards bearing data
There can be calculation procedure in calculating storaging unit, first be incorporated in intelligence computation storage unit daily in the whole year of place to use
Experience sunrise, the time of sunset and darkness, illuminance data, the sum of illuminance degree are greater than setting value, default 2.0V, pass through public affairs
Formula calculates theoretical position, according to the program circuit under the braking tracing mode of Control System Design, intelligence computation storage unit
The voltage data for reading drop offset plate output, the threshold value and sensor that theoretical calculation sun set/raise time, sunshine luminosity are set are real
When calculate output voltage data comparison, judge fine day or cloudy day, and the free switching in fine day, cloudy mode；Sensor is too
Sun can drip offset plate output rated voltage 3V in abundant sunshine, and four blocks of drop offset plates add up to output 12V when sunny, and standard is
According to actual measurement and summary of experience, early morning, which adds up to, is considered as sunrise when being greater than 1.6V, adds up to is considered as sunset when being less than 0.8V at dusk,
Add up to daytime when being less than 2.0V and is considered as the cloudy day；This parameter is adjusted according to local circumstance；By judgement, theoretical values and biography
When sensor data are consistent, it is judged as fine day mode, positions electro-optical package by sensing data, or is judged as the cloudy day then by intelligence computation
The theoretical values tracking that storage unit calculates；When hood shelters from a certain block of drop offset plate of vertical bottom face, this drop offset plate
Output voltage can decrease because of the degree difference blocked, and the gap for dripping offset plate output voltage according to four pieces judges the specific of the sun
Orientation；Six axle sensor of MPU6050 feeds back posture locating for solar panels, is only used to and this control system intelligence computation unit journey
The posture that sequence is calculated out does comparison correction；When theoretical values and sensing data are inconsistent, current electro-optical package and sun position are judged
It sets, and control system acts certain to motor, adjusting to correlation data does not have gap, if intelligence computation program is calculated
Posture and the posture of sensor feedback have substantially gap, mean that intelligence computation program calculation error or even exist across limit
Danger needs out of service or waits artificial treatment；When tracking successfully, when control system keeps current location to postpone one section
Between, intelligence computation storage unit, which is returned again to, calculates theoretical position by formula, or returns again to repetition and read drop offset plate output
Voltage；
The calculation formula at cloudy day is substantially are as follows:
Per stroke=total kilometres/(sunset time-sunrise time)；
DR position=per stroke * (current time-sunrise time)；
The current location of electro-optical package is adjusted according to DR position, wherein total kilometres have different variations according to season；It passes
Sensor structure: hemisphere transparent housing is in conjunction with round bottom plate edge, the hood of round bottom plate center fixation hollow square, in cover
There is sensor circuit board to measure feedback angle, circuit board connection MUC, four sun are placed on four facade bottom edge of hood respectively
Offset plate can be dripped, towards four corners of the world four direction, four pieces of drop offset plate back sides are respectively welded on PCT there are two positive and negative anodes contact in circuit
On plate, the circuit board of sensor has independent current source the module ,+5V of sensor circuit board, the power supply from electric elements control panel
Module connects sensor circuit board by cable, connector.
Photovoltaic two dimension of the invention brakes tracking control system, the LMD18200 used from device drives configuration
PWM driving method, do not need have the function of current feedback and program calling and controlling revolving speed using relay, may be implemented to delay
It is slow to stop, the effective injury for reducing starting current to motor.Significant superiority is embodied in: 1. solve relay control and field effect
The problem of low electrical machinery life processed, poor reliability should be managed.
2. solving the problems, such as existing sensor sealing, the feedback problem of angle, direction.Sensor enclosure and three-dimensional hood
It is by design customization of the invention.
3. the program in photovoltaic two dimension braking tracking control system has learning ability, can according to it is previous too
The tracking strategy in positive trajectory calculation future.Briefly, fine day is directly tracked according to sensing data, and the cloudy day is calculated by control system
Data tracking.It is can guarantee under cloudy day or the insufficient situation of illumination in this way, electro-optical package is made to find maximum sun angles.
Compared with prior art, solar two-dimension automatic following control system and apparatus structure of the present invention are compact, stability
Height, scalability is high, can effectively reduce starting current to the injury of motor, can be accurately positioned direct sunlight direction and improve power generation effect
Rate realizes steady, efficient, intelligentized photovoltaic power generation mode.
This product is small-scale on probation in actual operation.The transparent acrylic material of sensor outer housing in actual use
Hemispherical is made in matter, can stop wind and snow and rainwater etc. to the erosion of circuit board, also avoids anaclasis bring data distortion.
Motor control chip LMD18200 rated current 3A, control system are 3A to the electric current of single motor.Motor is maximum
75W.Using controller PWM driving method, do not need have the function of current feedback and program calling and controlling revolving speed using relay,
A direct current generator can be individually controlled, slow start slow stop is realized, effectively reduces injury of the starting current to electric current and motor.
Detailed description of the invention
Fig. 1 is sensor structure schematic sectional view；
Fig. 2 is sensor structure top view；
Fig. 3 is sensor circuit schematic diagram；
Fig. 4 is the cloudy model program flow diagram under the mode that automatically tracks；
Fig. 5 is motor control chip circuit diagram；
Fig. 6 is the calculation program chart in two-dimentional automatic following control system to solar opto-electronic board posture；
Fig. 7 is the program flow chart under the mode that automatically tracks；
Fig. 8 is the fine day model program flow diagram under the mode that automatically tracks；
Fig. 9 is the fine day model program flow diagram under the mode that automatically tracks.
Specific embodiment
This photovoltaic two dimension brakes tracking control system, including the motor control turned to for solar opto-electronic board
Chip, sensor, intelligence computation storage unit and operator, it is characterised in that sensor is parallel with solar opto-electronic board to be installed,
Actual measurement simultaneously calculates the pitch angle of solar opto-electronic board and feeds back to intelligence computation storage unit towards orientation, and intelligence computation is deposited
There is calculation procedure in storage unit, according to the program circuit of design automatically tracked under mode, control system is by each province in memory
The sun set/raise time in area, the threshold value of sunshine luminosity setting and sensor calculate output voltage data comparison in real time, judge fine day
Or the cloudy day, and the free switching in fine day cloudy day mode；Several originals in intelligence computation storage unit in the algorithm of calculation procedure
Then:
1) when the numerical value approach of sensor " east " " west ", when the numerical value in " south " " north " also approaches, it is considered as and tracks successfully, at this moment
Equipment is by maximum illumination.
2) on the time point of sunrise and sunset, current location is set after tracking successfully as the beginning and end of stroke.
3) in the more number of days of fine day, a cycle of operation can be considered as " normal period ".Fine day is more, closer to work as
It period can be replaced by " normal period ".
4) " total kilometres " are the distance of the origin-to-destination in normal period.
Sensor of the invention is made of four blocks of drop offset plates, barn door and six-axle acceleration sensor MPU6050, sees Fig. 1
Sensor structure figure, it is characterised in that sensor structure: sensor shape is hemisphere, hemisphere transparent housing 1 and round bottom plate 3
Edge combines, the hood 4 of 3 center fixation hollow square of round bottom plate, opaque black, has biography on the bottom plate in hood 4
Connector of the sensor MPU6050 chip circuit plate 5 to measure feedback angle, circuit board lower right corner PIN10 is connected to cable
It is communicated with MUC.See Fig. 2, four solar energy drop offset plates 2 are placed, towards the side of the four corners of the world four in 4 four facade bottom edge of hood respectively
To four pieces of back sides drop offset plate T1~T4 are welded on PCT plate there are two positive and negative anodes contact in circuit, and the circuit board 5 of sensor is
Independently-powered ,+the 5V of sensor circuit board, the power module from electric elements control panel is connected by cable, connector
The power supply of sensor circuit board.Sensor circuit wiring relationship, is shown in Fig. 3: cable is accessed power supply+5V and GND by connector,
+ 3.3V is converted by RT9193 again to use for MPU6050.Drop offset plate T1, T2, T3, T4 cathode foot is that common end all meets GND,
Positive 10K resistive pull-downs are connect in the AD conversion of driver MCU single-chip microcontroller STM32 by connector.Sensor MPU6050 is logical
IIC SDA is crossed to be connected on the IIC of STM32.It is noted that IIC will pull up 4.7K resistance, signal distortion in transmission is avoided.The sun
Offset plate output rated voltage 3V in abundant sunshine can be dripped, there is square hood in centre, when sheltering from a certain of vertical bottom face
When block drips offset plate, the output voltage of this drop offset plate can decrease because of the degree difference blocked, according to four blocks of drop offset plate output electricity
The gap of pressure judges the specific orientation of the sun.
Six axle sensor of MPU6050 can feed back posture locating for solar panels.Only it is used to and this control under normal circumstances
The posture that system intelligence computation unit program calculates out does comparison correction.If the posture and sensor of the calculation of intelligence computation program
The posture of feedback has substantially gap, means that calculation error or even exists across the danger such as limit, need out of service or wait
Artificial treatment.
Fig. 4 is the basic circuit diagram of this control system, this photovoltaic two dimension brakes the operation of tracking control system
Device has display screen, key, it is characterised in that in shell front, housing side has sensor interface, limit for display screen and key setting
Position device interface, debugging interface, shell is interior to be arranged microcontroller single-chip microcontroller MUC, the motor control mould of single-chip microcontroller STM32, both direction
Block, button cell, each interface remove power module, the circuit communication of all devices.Power module is in electrical component control panel
On.Liquid crystal display is 3.5 cun of TFT screens, and key can be completed to be manually operated, and modifies the parameter of recording program.Key on to
Under function be page up, lower one page, determination, exit, north/upper ,/is gone down south, west/left, east/right.Debugging interface is used for microcontroller
The communication of single-chip microcontroller MUC and host computer, program downloading etc..Button cell is used as the RTC clock timing after power down.Power supply makes at present
It is circuit board and motor power supply with 24V Switching Power Supply.Limit interface has and reserved can connect wind speed wind direction sensor.
Direct current generator maximum power 75W, DC MOTOR CONTROL control chip LMD18200 rated current 3A, control system pair
The electric current of single motor is 3A.Feature: 1. have power supply instruction, and 2. revolving speeds are adjustable, 3. strong antijamming capabilities, and 4. there is afterflow to protect
Shield, 5. can be controlled separately a direct current generator, and 6.PWM controller pulsewidth stepless speed control, 7. can realize positive and negative rotation.
Six axle sensors, six axis refer to that the respective XYZ Spindle Status of gyroscope, acceleration, the MPU6050 of use are a kind of fortune
Dynamic processing component, can detect X-axis, the rotation angle of Y-axis and Z axis.Online MPU6050 circuit such as Fig. 3 is seen, according to MPU6050's
Chip data handbook and user's manual can read out the gyroscope of X, Y, Z and the data of acceleration, then pass through open source algorithm fortune
Calculate pitch angle and direction.The present invention is installed six axle sensors are parallel with solar opto-electronic board, that is, be can measure and calculated the sun
Can electro-optical package pitch angle and feed back to micro-control unit MCU in control system towards orientation.The micro-control of control system of the present invention
Single-chip microprocessor MCU processed uses model STM32F103, has enough computation rates and storage space, for comparing, calculating sensor
The data of acquisition.The controller PWM driving method of the control posture LMD18200 that uses the scheme of part, do not need using
Relay has the function of current feedback and program calling and controlling revolving speed, can individually control a direct current generator, realizes slow
Stop, effectively reduces injury of the starting current to motor.Fig. 5 is the schematic diagram of DC motor driver LMD18200.Outside pin 1
Capacitor C12,11 external capacitor C17 of pin are met, job stability can be improved.Pin 3 is direction input, utilizes low and high level control
System rotates and reverse.Pin 4 is brake input end, high level brake.Pin 8 exports current feedback signal, by under resistance R23
2.7K resistance is drawn to be converted into voltage signal.Judged by the data that TP point inputs the AD conversion pin of single-chip microcontroller, AD conversion
It is that analog quantity conversion digital quantity if current of electric is less than rated current is considered as normal operation.Here driving method is utilized
The duty ratio of the pin 5PWM_INPUT input pulse PWM of LMD18200 controls motor speed, and PWM is single-chip microcontroller output, frequency
Rate is between 25K to 40K.Rather than it is traditional start motor by high current, electric motor starting power is that motor speed needs 2 seconds
Time accelerate to 100% revolving speed from 0% revolving speed, variation of the duty ratio from 0%~100% correspond to motor speed from 0%~
100% variation, therefore effectively reduce starting current.When motor stops similarly.Current feedback is LMD18200 chip
One of basic function.
Control electro-optical package operation posture calculate program circuit such as Fig. 6, program run for the first time starts Auto-Sensing Mode, then to
East operation, which is run to east limit, westwards to west, to be limited and starts timing；It runs to west and limits the periodicity of record runing time PWM
According to exiting Auto-Sensing Mode.Transmeridional process is only provided in flow chart 6, north-south is similarly.
Fig. 7 is the program circuit of control system automatically tracked under mode, is first incorporated in intelligence computation storage unit
Local experience sunrise, the time of sunset and darkness, illuminance data, acquire in real time in conjunction with sensor and are transmitted to control system
Total voltage data, i.e., add up to output voltage values and this system data to compare judgement with four blocks of drop offset plates of sensor, passes through
Judgement is crossed, if Installed System Memory data are consistent with sensing data, when such as fine day, is positioned at last by sensing data, the cloudy day is just
By calculating control system data tracking.
Sunrise, sunset and day daily in the whole year of solar opto-electronic board place to use are stored in intelligence computation storage unit
Black time data, initial data can be joined by the detailed sun set/raise time work of each province in richurimo.51240.com
It examines.Four blocks of drop offset plates of sensor add up to output 12V when sunny, and standard is according to actual measurement and summary of experience, light
Illumination early morning is considered as sunrise when adding up to greater than 1.6V, add up to is considered as sunset when being less than 0.8V at dusk, when daytime adds up to less than 2.0V
It is considered as the cloudy day.This parameter can be adjusted according to local circumstance.Control program in intelligence computation storage unit can basis
The setting threshold values that sunrise sunset has been deposited in sensor return voltage value comparison program judges fine day and cloudy day, and at the fine day cloudy day
Free switching in mode.Fig. 8 is the program flow diagram of fine day mode, is stored in fine day model program in intelligence computation storage unit,
The time data of daily sunrise, sunset and darkness in the whole year of place to use, luminosity conjunction are greater than setting value, default 2.00V,
Has the voltage value for reading drop offset plate output, compared voltage difference? if having, position of sun is judged, if East and West direction, and
And the sun in position by east, then control system acts motor, adjustment direction does not have until the data of east-west direction
Gap, north and south is similarly；When whether comparison has voltage difference, if without gap, control system keeps current problem delay one
The section time returns again to the voltage that drop offset plate output is read in repetition.
Dripping offset plate " east " " west " is one group, and " south " " north " is one group, is mounted on the solar energy face drop offset plate output of the east
Voltage is simply " east ".It is can take into account in comparison due to sampling bring error, only (is defaulted as when gap is greater than the set value
When 0.2V), it can just start to act.
Fig. 9 is the program flow diagram of cloudy mode, and local experience sunrise, day are first incorporated in intelligence computation storage unit
Time, illuminance data are fallen, luminosity conjunction is greater than setting value, defaults 2.00V, calculate theoretical position by formula, reckoning is worked as
Does front position judge that theoretical position and current location have deviation? if having, then control system acts motor, adjusts
It is whole to arrive theoretical position；If without gap, control system keeps current location to postpone for a period of time, to return again to and pass through formula
Theoretical position is calculated, judges current location；
The calculation formula at cloudy day is substantially are as follows:
Per stroke=total kilometres/(sunset time-sunrise time)；
DR position=per stroke * (current time-sunrise time)；
The current location of electro-optical package is adjusted according to DR position.Wherein total kilometres have different variations according to season.
Several principles in programmed algorithm are calculated in intelligence computation storage unit:
1. the numerical value when sensor " east " " west " approaches, when the numerical value in " south " " north " also approaches, it is considered as and tracks successfully, at this moment
Equipment is by maximum illumination.
2. setting current location after tracking successfully as the beginning and end of stroke on the time point of sunrise and sunset.
3. a cycle of operation can be considered as " normal period " in the more number of days of fine day.Fine day is more, closer to work as
It period can be replaced by " normal period ".It is because of in this " normal period ", photoelectricity Board position has been targeted by the sun,
It to stay for some time in the state of this maximum generating watt.
The distance that " 4. total kilometres " are the origin-to-destination in normal period.
Application example of the invention has in the Shenyang City, Liaoning Province Shenyang Hai Shenglu Sheng Bo energy-saving equipment Co., Ltd on-site
6 equipment being currently running, brought into operation so far from 2016.
Claims (5)
1. a kind of photovoltaic two dimension brakes tracking control system, including for solar opto-electronic board two to the motor of rotation and
Control chip, sensor, intelligence computation storage unit and operator, it is characterised in that sensor is parallel with solar opto-electronic board to pacify
Dress, actual measurement simultaneously calculate the pitch angle of solar opto-electronic board and feed back to intelligence computation storage unit MCU towards bearing data,
There is calculation procedure in intelligence computation storage unit, is first incorporated in intelligence computation storage unit in the whole year of place to use daily
Experience sunrise, the time of sunset and darkness, illuminance data, the sum of illuminance degree is greater than setting value, defaults 2.0V, pass through
Formula calculates theoretical position, and according to the program circuit under the braking tracing mode of Control System Design, intelligence computation storage is single
Member reads the voltage data of drop offset plate output, the threshold value and sensor that theoretical calculation sun set/raise time, sunshine luminosity are set
Measuring and calculating output voltage data comparison in real time judges fine day or cloudy day, and the free switching in fine day, cloudy mode；Sensor
Solar energy drips offset plate output rated voltage 3V in abundant sunshine, and four blocks of drop offset plates add up to output 12V, standard when sunny
It is that early morning, which adds up to, is considered as sunrise when being greater than 1.6V according to actual measurement and formulation of summarizing the experience, is regarded when adding up at dusk less than 0.8V
For sunset, adds up to daytime when being less than 2.0V and be considered as the cloudy day, this parameter is adjusted according to local circumstance；It is theoretical by judgement
When numerical value is consistent with sensing data, be judged as fine day mode, by sensing data position electro-optical package, or be judged as cloudy day then by
The theoretical values tracking that intelligence computation storage unit calculates；When theoretical values and sensing data are inconsistent, current photoelectricity is judged
Plate and position of sun, and control system acts certain to motor, adjusting to correlation data does not have gap, if intelligence meter
The posture of the posture and sensor feedback of calculating program calculation has substantially gap, means that intelligence computation program calculation error or even deposits
Crossing, limit is dangerous, needs out of service or waits artificial treatment；When tracking successfully, control system keeps current location to prolong
Late a period of time, intelligence computation storage unit, which is returned again to, calculates theoretical position by formula, or returns again to repetition and read drop glue
The voltage of plate output；
The calculation formula at cloudy day is substantially are as follows:
Per stroke=total kilometres/(sunset time-sunrise time)；
DR position=per stroke * (current time-sunrise time)；
The current location of electro-optical package is adjusted according to DR position, wherein total kilometres have different variations according to season.
2. photovoltaic two dimension according to claim 1 brakes tracking control system, it is characterised in that fine day mode
Program circuit: fine day model program sunrise sunset has been deposited according in the program under braking tracing mode in intelligence computation storage unit
Setting threshold values judged with reading sensor and calculate total voltage data of output in real time；Theoretical values and sensing data
Comparison is there are if voltage difference, judging current electro-optical package and position of sun, if East and West direction, and the sun is in position by east,
Then control system acts East and West direction motor, and adjustment electro-optical package direction does not have gap until the data of east-west direction, south
North is similarly.
3. photovoltaic two dimension according to claim 1 brakes tracking control system, it is characterised in that sensor structure:
Hemisphere transparent housing (1) is in conjunction with round bottom plate (3) edge, the black hood of round bottom plate (3) center fixation hollow square
(4), there is sensor circuit board (5) to measure feedback angle, circuit board (5) connection MUC, hood (4) four in hood (4)
Four solar energy drop offset plate (2) is placed, towards four corners of the world four direction in facade bottom edge respectively, four pieces of drop offset plate (T1 in circuit
~T4) back side is respectively welded on PCT plate there are two positive and negative anodes contact, and the circuit board (5) of sensor has independent current source module, sensing
+ the 5V of device circuit board, the power module from electric elements control panel connect sensor circuit board by cable, connector.
4. photovoltaic two dimension according to claim 1 brakes tracking control system, it is characterised in that sensor circuit
Wiring relationship: cable is accessed power supply+5V and GND by connector, then is converted into+3.3V for sensor by RT9193
MPU6050 is used；Drop offset plate (T1, T2, T3, T4) cathode foot (2) is that common end all meets GND, and positive 10K resistive pull-downs pass through company
It connects device to connect in the AD conversion of driver MCU single-chip microcontroller STM32, sensor MPU6050 is connected to STM32 by IIC SDA
IIC on；Motor control chip LMD18200 rated current 3A, control system are 3A to the electric current of single motor；Motor is maximum
75W, using controller PWM driving method.
5. photovoltaic two dimension according to claim 1 brakes tracking control system, it is characterised in that operator, display
Screen and key setting are in shell front, and housing side has sensor interface, limiter interface, debugging interface, and setting is micro- in shell
Control single chip computer MUC, the motor control module of both direction, button cell, each interface remove power module, all devices
Circuit communication, power module is on electrical component control panel, and debugging interface is for the logical of microcontroller single-chip microcontroller MUC and host computer
News, program downloading, button cell are used as the RTC clock meter after power down, and power supply is that circuit board and motor supply using 24V Switching Power Supply
Electricity.
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| CN114925997A (en) * | 2022-05-09 | 2022-08-19 | 江西省农业科学院农业工程研究所 | Method for screening effective data of multispectral sensor of farmland internet of things |
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