CN202404399U - Signal sampling, communicating and displaying circuit for photovoltaic junction boxes - Google Patents
Signal sampling, communicating and displaying circuit for photovoltaic junction boxes Download PDFInfo
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- CN202404399U CN202404399U CN 201120530734 CN201120530734U CN202404399U CN 202404399 U CN202404399 U CN 202404399U CN 201120530734 CN201120530734 CN 201120530734 CN 201120530734 U CN201120530734 U CN 201120530734U CN 202404399 U CN202404399 U CN 202404399U
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- signal sampling
- communicating
- photovoltaic
- circuit
- displaying
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Abstract
The utility model relates to the technical field of solar photovoltaic power generation, in particular to a signal sampling, communicating and displaying circuit for photovoltaic junction boxes. The signal sampling, communicating and displaying circuit is mounted on the photovoltaic junction box, and can realize communication among the junction boxes and a photovoltaic inverter, voltage and current sampling of a photovoltaic module and displaying of the working condition of a photovoltaic power generation system, the photovoltaic inverter can monitor working conditions of the various junction boxes in real time by the aid of the signal sampling, communicating and displaying circuit, and the circuit can sample 16 channels of analog signals. The signal sampling, communicating and displaying circuit comprises a signal sampling unit, a communicating unit and a displaying unit. The signal sampling, communicating and displaying circuit is stable in working state, reliable in running, simple in design and low in cost, and can be widely applied to the field of solar photovoltaic power generation.
Description
Technical field
The utility model relates to the solar photovoltaic technology field, what be specifically related to is signal sampling and communication and the display circuit that a kind of photovoltaic header box is used.
Background technology
Along with continuing of global energy crisis and greatly developing of new forms of energy; The fashionable world of solar energy power generating; In recent years along with photovoltaic industry is fast-developing; The bridge that the photovoltaic header box is connected with photovoltaic DC-to-AC converter as photovoltaic electrification component, the user also improves the requirement of its function thereupon, needs the photovoltaic header box to have and photovoltaic DC-to-AC converter voltage and current signal sampling function and communication function; And the working condition of ability display light photovoltaic generating system, the utility model designs in order to satisfy these demands.
Summary of the invention
The utility model is mounted in the photovoltaic header box, can realize the communication of header box and photovoltaic DC-to-AC converter and the demonstration of sampling of photovoltaic module electric current and voltage and photovoltaic generating system working condition, realizes the real-time monitoring of photovoltaic DC-to-AC converter to each header box duty.
The purpose of the utility model is achieved in that signal sampling that a kind of photovoltaic header box is used and communication and display circuit be made up of signal sampling unit, communication unit, display unit; It is characterized in that: the signal sampling unit is connected with the communication unit electric signal, and communication unit is connected with the display unit electric signal.
The utility model also has following technical characterictic:
1, the design of signal sampling unit by dsp chip as core processor; Build current analog amount signal sample circuit through the integrated transporting discharging chip; The current and voltage signals that signal sampling will come from photovoltaic DC-to-AC converter is given the AD passage of DSP and is handled after conditioning, this circuit can provide the sampling of 16 tunnel simulating signals;
2, the circuit design of communication unit 3 kinds of mode communications and interface, i.e. RS232 communication, RS485 communication and Can bus communication can adopt communication modes that a plurality of header boxs are connected;
3, the circuit design of display unit adopts 24 charactrons, is used for showing 16 road current values and 1 tunnel d-c bus voltage value, realizes that through a button circulation shows.
The utility model stable working state, reliable, circuit design is simple, and is with low cost, can be widely used in the solar energy power generating field.
Description of drawings
Fig. 1 is the utility model theory of constitution block diagram;
Fig. 2 is signal sampling element circuit figure;
Fig. 3 is a RS232 communication modes circuit diagram;
Fig. 4 is a RS485 communication modes circuit diagram;
Fig. 5 is a Can communication modes circuit diagram;
Fig. 6 is display unit circuit figure.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed description:
The utility model is made up of signal sampling unit, communication unit, display unit, and the signal sampling unit is connected with the communication unit electric signal, and communication unit is connected with the display unit electric signal.Being shown in 16 tunnel simulating signal AD sampling with one road AD sampling channel like 2 in accompanying drawing is example; Build current analog amount signal sample circuit by the INA128 integrated chip; Input signal need be nursed one's health to behind-3V～0V, is input to VIN-, the VIN+ end is handled the AD passage that outputs to DSP at last through the INA128 amplifier again.The utility model circuit can provide the sampling of 16 tunnel simulating signals.
This circuit communication unit is designed with 3 kinds of communication modes and interface, i.e. RS232 communication, RS485 communication and Can bus communication, and 3 kinds of communication modes interfaces are drawn by the inner serial ports A of dsp chip, serial ports B and Can port respectively.
The RS232 PORT COM adopts the SP3232EEA integrated chip to build, and RS232-TXD, RS232-RXD are connected to the inner serial ports A of dsp chip, and the peripheral circuit principle is seen accompanying drawing 3.
The RS485 PORT COM adopts the ADM2483 integrated chip to build, and RS485-TXD, RS485-RXD are connected to the inner serial ports B of dsp chip, and the peripheral circuit principle is seen accompanying drawing 4.
Can bus communication port adopts the PCA82C2520 integrated chip to build, and CANTX, CANRX are connected to the inner CAN bus port of dsp chip, and the peripheral circuit principle is seen accompanying drawing 5.
This circuit display unit adopts 24 charactrons, is used for showing 16 road current values and 1 tunnel d-c bus voltage value, realizes that through a button circulation shows, first group of charactron shows way, and second group of charactron shows current value.Charactron shows and by key control employing HD7279 integrated chip, chip is connected with the SPI port of dsp chip, realizes the control of DSP to it, and circuit theory is seen accompanying drawing 6.
Claims (2)
1. the signal sampling used of a photovoltaic header box and communication and display circuit are made up of signal sampling unit, communication unit, display unit; It is characterized in that: the signal sampling unit is connected with the communication unit electric signal, and communication unit is connected with the display unit electric signal.
2. signal sampling and communication and display circuit that a kind of photovoltaic header box according to claim 1 is used is characterized in that: the circuit design of display unit adopts 24 charactrons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120530734 CN202404399U (en) | 2011-12-18 | 2011-12-18 | Signal sampling, communicating and displaying circuit for photovoltaic junction boxes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120530734 CN202404399U (en) | 2011-12-18 | 2011-12-18 | Signal sampling, communicating and displaying circuit for photovoltaic junction boxes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202404399U true CN202404399U (en) | 2012-08-29 |
Family
ID=46702039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120530734 Expired - Fee Related CN202404399U (en) | 2011-12-18 | 2011-12-18 | Signal sampling, communicating and displaying circuit for photovoltaic junction boxes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202404399U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173161A1 (en) * | 2015-04-29 | 2016-11-03 | 京东方科技集团股份有限公司 | Photovoltaic combiner box monitoring system |
-
2011
- 2011-12-18 CN CN 201120530734 patent/CN202404399U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016173161A1 (en) * | 2015-04-29 | 2016-11-03 | 京东方科技集团股份有限公司 | Photovoltaic combiner box monitoring system |
| US10193496B2 (en) | 2015-04-29 | 2019-01-29 | Boe Technology Group Co., Ltd. | Photovoltaic combiner box monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HARBIN JIUZHOU ELECTRIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: JIUZHOU ELECTRIC CO LTD, HARBIN Effective date: 20120801 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 150081 HARBIN, HEILONGJIANG PROVINCE TO: 150028 HARBIN, HEILONGJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120801 Address after: 150028 No. 1, No. 29, building D43, phase three, Shimao new town, Songbei, Harbin, Heilongjiang, Binjiang Patentee after: Harbin Jiuzhou Electrical Technology Co.,Ltd. Address before: 150081 Heilongjiang Province, Harbin city Nangang District haping Road No. 162 Patentee before: Jiuzhou Electric Co., Ltd., Harbin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20191218 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |