CN104639039A - Small and medium-sized photovoltaic grid-connected inverter single-board automated test platform - Google Patents
Small and medium-sized photovoltaic grid-connected inverter single-board automated test platform Download PDFInfo
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- CN104639039A CN104639039A CN201410849151.4A CN201410849151A CN104639039A CN 104639039 A CN104639039 A CN 104639039A CN 201410849151 A CN201410849151 A CN 201410849151A CN 104639039 A CN104639039 A CN 104639039A
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 238000004891 communication Methods 0.000 claims abstract description 24
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000005070 sampling Methods 0.000 claims abstract description 13
- 238000001514 detection method Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010998 test method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000003825 pressing Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
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- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a small and medium-sized photovoltaic grid-connected inverter single-board automated test platform, which comprises an ADC (Analog to Digital Converter) module used for sampling the power value, and a PWM (Pulse-Width Modulation) wave amplitude of the to-be-tested board, an eCAN (Enhanced Control Area Network) module used for detecting whether the to-be-tested board CAN (Control Area Network) communication can be normally connected and whether the sample data can be properly transmitted, an EPWM (Enhanced Pulse Width Modulation) module used for detecting the CAP (Computer-Aided Production) square wave, a PWM (Pulse-Width Modulation) wave frequency and a duty ratio of the to-be-tested board, a GPIO (General Purpose Input/Output) module used for detecting analog switch-in and switch-out quantity of the to-be-tested board and LED (light-emitting diode) lamp control, an SCI (Serial Communication Interface) module used for displaying the detecting information on a PC (Personal Computer), a signal generating module used for generating an AC (Alternating Current) signal, a sampling signal processing module used for processing the data signal and then sending into an AD in a digital signal processor, a serial communication module for communicating with the PC, and a display module which is used for displaying the test data onto the screen. The small and medium-sized photovoltaic grid-connected inverter single-board automated detecting platform has the advantages of being simple and easy in operation during the test procedure and high in detecting efficiency; errors do not easily occur; the debugging efficiency is greatly improved, and the amount of labor is reduced.
Description
Technical field
The present invention relates to a kind of middle-size and small-size photovoltaic combining inverter veneer automatic test platform, belong to distributed photovoltaic power generation technical field.
Background technology
When testing existing 20kW photovoltaic combining inverter veneer, need grafting and the operation such as passage bridge, data result judgement of every block veneer being carried out to holding wire.Need during test to use the instruments such as oscilloscope, universal instrument, D.C. regulated power supply.But this makes test process very complicated, and detection efficiency is lower, easily occurs mistake.Therefore be necessary to design a kind of test tooling of single plate solved the problem.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of middle-size and small-size photovoltaic combining inverter veneer automatic test platform, solves traditional veneer and adopts manual testing, complex operation, work consuming consuming time, the problem that production efficiency is low.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: comprise ADC module, eCAN module, EPWM module, GPIO module, SCI module, signal generating module, sampled signal processing module, serial communication modular, display module, digital signal processor; ADC module is for test plate (panel) power values to be measured, the PWM wave amplitude of sampling; Can eCAN module normally connect for detecting test plate (panel) CAN communication to be measured and correctly transmit sampled data; EPWM module is for detecting test plate (panel) CAP square wave to be measured, PWM ripple frequency and duty ratio; GPIO module is intended opening control into, the amount of outputing and LED for being detected template die to be tested; SCI module is for being presented at PC by Detection Information; Signal generating module is for generation of AC signal; Sampled signal processing module is used for data-signal to carry out processing AD in rear feeding digital signal processor; Serial communication modular is used for communicating with PC; Display module is for being presented at screen by test data.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described ADC module comprises: supply voltage value detecting unit, CAP square wave, PWM wave amplitude detecting unit; Supply voltage value detecting unit comprises 4051 chips, optocoupler, relay, operational amplifier; CAP square wave, PWM wave amplitude detecting unit comprise 4051 chips, optocoupler, relay, operational amplifier.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described eCAN module comprises: CAN transceiver, resistance; Resistance is for reducing the interference to CAN.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described EPWM module comprises: operational amplifier, CD4051 chip, optocoupler.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described GPIO module comprises: button circuit, light-emitting diode.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, it is characterized in that: described serial communication modular comprises: MAX232 chip, ISO7241CDW chip, peripheral interface intends the DB9 pin type serial ports of selection standard, and MAX232 chip realizes the change-over circuit of R232 to TTL.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described GPIO module reserves 26 GPIO ports; 1 for supply voltage value detection control LED; 1 for CAP square wave, PWM wave amplitude detection control LED; 1 for 28035 AD sampled value detection control LED; 1 for 28335 AD sampled value detection control LED; 1 for CAP square wave frequency and duty ratio detection control LED; 1 for PWM ripple frequency and duty ratio detection control LED; 10 are detected for 28035 outputs, input; 2 for 28335 output detections; 3 are detected for CPLD input; 5 for 24 line decoder input and Enable Pins.
Beneficial effect: middle-size and small-size photovoltaic combining inverter veneer automatic test platform provided by the invention, calculate according to original single-board testing method, testing one piece of veneer needs 20 minutes, completes 8 steps.And tested by test fixture, debugging one piece of veneer only needs 5 minutes, greatly improves debugging efficiency, reduces artificial workload; Test process is simple to operation, and detection efficiency is high, is not easy to occur mistake.
Accompanying drawing explanation
Fig. 1 is system block diagram of the present invention;
Fig. 2 is supply voltage value testing circuit figure in the present invention;
Fig. 3 is serial port circuit figure in the present invention;
Fig. 4 is sampled signal processing module theory diagram;
Fig. 5 is power supply, PWM wave amplitude sampling test function flow chart.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
As shown in Figures 1 to 5, a kind of middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: comprise ADC module, eCAN module, EPWM module, GPIO module, SCI module, signal generating module, sampled signal processing module, serial communication modular, display module, digital signal processor; ADC module is for test plate (panel) power values to be measured, the PWM wave amplitude of sampling; Can eCAN module normally connect for detecting test plate (panel) CAN communication to be measured and correctly transmit sampled data; EPWM module is for detecting test plate (panel) CAP square wave to be measured, PWM ripple frequency and duty ratio; GPIO module is intended opening control into, the amount of outputing and LED for being detected template die to be tested; SCI module is for being presented at PC by Detection Information; Signal generating module is for generation of AC signal; Sampled signal processing module is used for data-signal to carry out processing AD in rear feeding digital signal processor; Serial communication modular is used for communicating with PC; Display module is for being presented at screen by test data.
Fig. 4 is sampled signal processing module theory diagram.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described ADC module comprises: supply voltage value detecting unit, CAP square wave, PWM wave amplitude detecting unit; As shown in Figure 2, supply voltage value detecting unit comprises 4051 chips, optocoupler, relay, operational amplifier; CAP square wave, PWM wave amplitude detecting unit comprise 4051 chips, optocoupler, relay, operational amplifier.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described eCAN module comprises: CAN transceiver, resistance; Resistance is for reducing the interference to CAN.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described EPWM module comprises: operational amplifier, CD4051 chip, optocoupler.
Described middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: described GPIO module comprises: button circuit, light-emitting diode.
As shown in Figure 3, described serial communication modular comprises: MAX232 chip, ISO7241CDW chip, and peripheral interface intends the DB9 pin type serial ports of selection standard, and MAX232 chip realizes the change-over circuit of R232 to TTL.
Described GPIO module reserves 26 GPIO ports; 1 for supply voltage value detection control LED; 1 for CAP square wave, PWM wave amplitude detection control LED; 1 for 28035 AD sampled value detection control LED; 1 for 28335 AD sampled value detection control LED; 1 for CAP square wave frequency and duty ratio detection control LED; 1 for PWM ripple frequency and duty ratio detection control LED; 10 are detected for 28035 outputs, input; 2 for 28335 output detections; 3 are detected for CPLD input; 5 for 24 line decoder input and Enable Pins.
Middle-size and small-size photovoltaic combining inverter veneer automatic test platform, whole system comprises: the core control panel with process to occur, for test data being presented at the display module on screen, for the communication module be connected with extraneous communication with signal for sampling.
Wherein, testing apparatus comprises base and is arranged at the pallet above base, is provided with spring and elastic between base and pallet, and the through hole that elastic and pallet are offered matches.Also be provided with a support above pallet, support is hinged with a spanner, spanner is fixedly connected with fixed leg, and fixed leg is fixedly connected with the pressing plate directly over pallet, and described pressing plate lower end is provided with reference column.
A kind of test tooling of single plate, test tooling of single plate comprises testboard, the handle be arranged on testboard, for showing display screen, veneer pallet, test circuit, power interface, the thimble array of single-board testing result.The contact point of veneer contacts with multiple metal thimble.
Test fixture inside comprises test board, liquid crystal display screen, communication board, power supply terminal, accessory power supply, Board Under Test, veneer pallet, handle, thimble array etc.Veneer pallet stamps pinprick on corresponding circuitry contacts, thus forms thimble array.
When using test tooling of single plate to carry out test operation, operating personnel can mention manual handle, are positioned on veneer pallet by veneer to be measured.Then depress manual handle, now the contact point of loose side contacts with the respective metal thimble in thimble array, carries out the conducting of signal, power supply.Signal source input interface receives the instruction from program on PC, and test tooling of single plate starts test veneer being carried out to properties and function.Period, test result shows by the traffic lights on display panel, and red light represents that hardware has problem, and program halt performs next step operation, and green light representation program detects by performing next step operation.
After test fixture powers on, first carry out the detection of supply voltage value, then carry out 28035,28335 chip AD sample detecting; CAP square wave, PWM WAVE VOLTAGE AMPLITUDE VALUES detect; CAP square wave frequency and duty ratio detect and GPIO output detections.
For the measurement of supply voltage, reference voltage and PWM wave amplitude, MCU voltage signal feeding after the process such as dividing potential drop, isolation with AD sampling functions can be adopted to carry out sampling and computing, automatically obtain debugging conclusion.
For CAN communication inspection, the MCU equally with CAN communication function can be adopted to communicate mutually with board under test, utilize this MCU to obtain result of communication.
For sampling input test, CAN communication can be utilized to transfer to the MCU of automatic test platform to judge the sampled result of board under test.
For DO, DI test, the GPIO of the MCU of automatic test platform can be utilized to control output level, replace the artificial test node to board under test to provide level.
Export the frequency in testing and duty cycle parameters for PWM ripple, can be measured by the MCU with CAP function and judge.
Sampled signal processing module is made up of integrated operational amplifier, analog switch two kinds of active devices and the passive device such as resistance, diode, function is that the power supply signal on board under test and pwm signal are carried out suitable process, be converted into suitable level value and controllably input 28335 sheet in AD, facilitate the sampling work of A/D module.Each road voltage signal through electric resistance partial pressure to a 28335 interior AD can 0-3V within the scope of, the voltage follower formed through one-level operational amplifier inputs in 8 path analoging switch 4051, GPIO by 28335 controls gating and exports, after after two-stage voltage follow is fully isolated, be processed to suitable d. c. voltage signal and enter 28335 interior A/D module.
The software systems of automatic test platform are responsible for control 28335 and are read the various signals that hardware system provides, the work such as analysis, computing, judgement of settling signal, and carry out necessary feedback to hardware system.Mainly complete following functions.
(1) power supply, PWM wave amplitude sampling test; Fig. 5 is power supply, PWM wave amplitude sampling test function flow chart.
(2) CAN mouth communication test;
(3) control board AD samples and tests;
(4) DO exports test;
(5) DI input test;
(6) PWM ripple pulsewidth, frequency test;
(7) fault charactron exports;
(8) SCI communication.
Readable for ensureing the terseness of software systems principal function, each functional module is write as one or a small amount of subfunction respectively, calls in principal function by demand.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a middle-size and small-size photovoltaic combining inverter veneer automatic test platform, is characterized in that: comprise ADC module, eCAN module, EPWM module, GPIO module, SCI module, signal generating module, sampled signal processing module, serial communication modular, display module, digital signal processor; ADC module is for test plate (panel) power values to be measured, the PWM wave amplitude of sampling; Can eCAN module normally connect for detecting test plate (panel) CAN communication to be measured and correctly transmit sampled data; EPWM module is for detecting test plate (panel) CAP square wave to be measured, PWM ripple frequency and duty ratio; GPIO module is intended opening control into, the amount of outputing and LED for being detected template die to be tested; SCI module is for being presented at PC by Detection Information; Signal generating module is for generation of AC signal; Sampled signal processing module is used for data-signal to carry out processing AD in rear feeding digital signal processor; Serial communication modular is used for communicating with PC; Display module is for being presented at screen by test data.
2. middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to claim 1, is characterized in that: described ADC module comprises: supply voltage value detecting unit, CAP square wave, PWM wave amplitude detecting unit; Supply voltage value detecting unit comprises 4051 chips, optocoupler, relay, operational amplifier; CAP square wave, PWM wave amplitude detecting unit comprise 4051 chips, optocoupler, relay, operational amplifier.
3. middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to claim 1, is characterized in that: described eCAN module comprises: CAN transceiver, resistance; Resistance is for reducing the interference to CAN.
4. middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to claim 1, is characterized in that: described EPWM module comprises: operational amplifier, CD4051 chip, optocoupler.
5. middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to claim 1, is characterized in that: described GPIO module comprises: button circuit, light-emitting diode.
6. middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to claim 1, it is characterized in that: described serial communication modular comprises: MAX232 chip, ISO7241CDW chip, peripheral interface intends the DB9 pin type serial ports of selection standard, and MAX232 chip realizes the change-over circuit of R232 to TTL.
7. the middle-size and small-size photovoltaic combining inverter veneer automatic test platform according to any one of claim 1 to 6, is characterized in that: described GPIO module reserves 26 GPIO ports.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410849151.4A CN104639039A (en) | 2014-12-30 | 2014-12-30 | Small and medium-sized photovoltaic grid-connected inverter single-board automated test platform |
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| CN201410849151.4A CN104639039A (en) | 2014-12-30 | 2014-12-30 | Small and medium-sized photovoltaic grid-connected inverter single-board automated test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276423A (en) * | 2016-07-19 | 2017-10-20 | 北京电力自动化设备有限公司 | Ship shore electric power power model adjustment method |
| CN114740332A (en) * | 2022-04-13 | 2022-07-12 | 深圳友讯达科技股份有限公司 | Automatic single board detection platform and method based on RT-thread |
-
2014
- 2014-12-30 CN CN201410849151.4A patent/CN104639039A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276423A (en) * | 2016-07-19 | 2017-10-20 | 北京电力自动化设备有限公司 | Ship shore electric power power model adjustment method |
| CN107276423B (en) * | 2016-07-19 | 2019-05-31 | 北京电力自动化设备有限公司 | Ship shore electric power power module adjustment method |
| CN114740332A (en) * | 2022-04-13 | 2022-07-12 | 深圳友讯达科技股份有限公司 | Automatic single board detection platform and method based on RT-thread |
| CN114740332B (en) * | 2022-04-13 | 2024-03-15 | 深圳友讯达科技股份有限公司 | Automatic single board detection platform based on RT-thread |
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Application publication date: 20150520 |
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