CN103956971A - Remote monitoring photovoltaic junction box based on infrared thermal sensor and RFID transmission - Google Patents
Remote monitoring photovoltaic junction box based on infrared thermal sensor and RFID transmission Download PDFInfo
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- CN103956971A CN103956971A CN201410133481.3A CN201410133481A CN103956971A CN 103956971 A CN103956971 A CN 103956971A CN 201410133481 A CN201410133481 A CN 201410133481A CN 103956971 A CN103956971 A CN 103956971A
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- China
- Prior art keywords
- junction box
- photovoltaic
- diode
- thermal sensor
- infrared thermal
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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
Abstract
The invention discloses a remote monitoring photovoltaic junction box based on an infrared thermal sensor and RFID transmission. The remote monitoring photovoltaic junction box comprises a diode string, two photovoltaic cable interfaces, an infrared thermal sensor module and a MCU microprocessor. The diode string comprises a plurality of diodes connected in series in the same direction. The diodes and photovoltaic cells are the same in number, and the diodes correspond to the photovoltaic cells and are connected with the photovoltaic cells in parallel. The two photovoltaic cable interfaces are connected to the two ends of the diode string respectively. The infrared thermal sensor module is respectively connected to circuits of the diodes in the diode string, and the output end of the infrared thermal sensor is connected with the MCU microprocessor. The MCU microprocessor is connected with a control host outside the photovoltaic junction box through RFID. According to the remote monitoring photovoltaic junction box, thermal radiation of the diode string is detected through the infrared thermal sensor, and the MCU microprocessor with the monitoring function is integrated; when the infrared thermal sensor detects that the thermal radiation of the diodes is excessively high, the monitored abnormal state is transmitted to the control host through the RFID, and real-time monitoring of the temperature of the photovoltaic junction box is achieved.
Description
Technical field
The present invention relates to field of photovoltaic power generation, relate in particular to the photovoltaic junction box being applied in photovoltaic generating system, particularly a kind of remote monitoring type photovoltaic junction box based on Far infra-red hot transducer and RFID transmission.
Background technology
In the electric connection technology of photovoltaic generating system, conventionally adopting photovoltaic junction box to realize photovoltaic module is the electrical connection between solar battery group and inverter.Current photovoltaic junction box arranges an installation cavity between box body, is arranged in installation cavity with the conducting strip of diode.The quantity of diode is identical with the quantity of solar cell, and with solar cell one by one correspondence be connected in parallel.The effect of diode is to utilize the principle of its forward conduction, oppositely cut-off to prevent that reverse charging from damaging solar battery group, and prevents that the solar cell from opening circuit and cause whole solar battery group all cannot use.When solar battery group all when normal, do not have electric current to flow through diode; When having a solar cell because fortuitous event is cannot normal power generation time, diode protection state starts, and has larger electric current and flows through diode.Because diode is wanted the electric current of the about 10A of conducting in when work, can cause a large amount of hot stacks, produce higher temperature, along with the continuous rising of diode temperature, resistance in diode will constantly increase, cause diode to produce more heat, enter vicious circle thereby waste more electric power resource.Therefore, in order to ensure the reliably working of photovoltaic junction box, the temperature of diode can not be very high, and the real-time monitoring of temperature is seemed to particularly important.
Summary of the invention
For the problems referred to above of existing photovoltaic junction box, applicant, through Improvement, provides a kind of remote monitoring type photovoltaic junction box based on Far infra-red hot transducer and RFID transmission, realizes the real-time monitoring of photovoltaic junction box temperature.
Technical scheme of the present invention is as follows:
A kind of remote monitoring type photovoltaic junction box based on Far infra-red hot transducer and RFID transmission, comprise the upper cover and the base that mutually cover, between upper cover and base, form cavity, in described cavity, comprise diode string, photovoltaic cable interface, Far infra-red hot sensor assembly and MCU microprocessor; Described diode string comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell, and with photovoltaic cell one by one correspondence be connected in parallel; Described photovoltaic cable interface has two, is connected to respectively the two ends of diode string; Described Far infra-red hot sensor assembly is connected on the circuit of the each diode in diode string, and for detecting the thermal radiation of each diode, the output of described Far infra-red hot sensor assembly connects MCU microprocessor; Described MCU microprocessor connects the main control system outside photovoltaic junction box by RFID.
Useful technique effect of the present invention is:
The present invention uses Far infra-red hot transducer to detect the thermal radiation of diode string, and the integrated MCU microprocessor with monitoring function, in the time that Far infra-red hot transducer detects that the thermal radiation of diode is too high, the abnormality monitoring is transferred to main control system by RFID, has realized the real-time monitoring of photovoltaic junction box temperature.
Advantage of the present invention will provide in the description of embodiment part below, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Fig. 1 is electrical block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, photovoltaic junction box of the present invention, by comprising diode string 1, photovoltaic cable interface 2, Far infra-red hot sensor assembly 3 and MCU microprocessor 4 in the cavity forming between upper cover and base.Diode string 1 comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell 5, and with photovoltaic cell 5 one by one correspondence be connected in parallel.Two photovoltaic cable interfaces 2 are connected to respectively the two ends of diode string 1.Multiple Far infra-red hot sensor assemblies 3 are connected on the circuit of the each diode in diode string 1, and for detecting the thermal radiation of each diode, the output of each Far infra-red hot sensor assembly 3 connects MCU microprocessor 4.MCU microprocessor 4 connects the output of each Far infra-red hot sensor assembly 3, and the output of MCU microprocessor connects the main control system 6 outside photovoltaic junction box by RFID.In the time that Far infra-red hot sensor assembly 3 detects that the thermal radiation of diode is too high, illustrate that this diode temperature is too high, the abnormal data of acquisition is transferred out to main control system 6 with RFID by MCU microprocessor 4, realize the temperature remote real-time monitoring of photovoltaic junction box.Far infra-red hot sensor assembly 3 of the present invention and MCU microprocessor 4, main control system 6 are commercial goods.
Above-described is only the preferred embodiment of the present invention, the invention is not restricted to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate without departing from the spirit and concept in the present invention, within all should thinking and being included in protection scope of the present invention.
Claims (1)
1. the remote monitoring type photovoltaic junction box based on Far infra-red hot transducer and RFID transmission, comprise the upper cover and the base that mutually cover, between upper cover and base, form cavity, it is characterized in that: in described cavity, comprise diode string (1), photovoltaic cable interface (2), Far infra-red hot sensor assembly (3) and MCU microprocessor (4); Described diode string (1) comprises the diode of multiple series aiding connections, and the quantity of diode is identical with the quantity of photovoltaic cell (5), and same photovoltaic cell (5) one by one correspondence be connected in parallel; Described photovoltaic cable interface (2) has two, is connected to respectively the two ends of diode string (1); Described Far infra-red hot sensor assembly (3) is connected on the circuit of the each diode in diode string (1), for detecting the thermal radiation of each diode, the output of described Far infra-red hot sensor assembly (3) connects MCU microprocessor (4); Described MCU microprocessor (4) connects the main control system (6) outside photovoltaic junction box by RFID.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133481.3A CN103956971A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring photovoltaic junction box based on infrared thermal sensor and RFID transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410133481.3A CN103956971A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring photovoltaic junction box based on infrared thermal sensor and RFID transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103956971A true CN103956971A (en) | 2014-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410133481.3A Pending CN103956971A (en) | 2014-04-03 | 2014-04-03 | Remote monitoring photovoltaic junction box based on infrared thermal sensor and RFID transmission |
Country Status (1)
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| CN (1) | CN103956971A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1976026A2 (en) * | 2007-03-28 | 2008-10-01 | Günther Spelsberg GmbH & Co. KG | Junction box |
| CN201663404U (en) * | 2009-12-31 | 2010-12-01 | 镇江市通灵电器有限责任公司 | Solar junction box with heat sink |
| CN201773167U (en) * | 2010-08-23 | 2011-03-23 | 吕纪坤 | Photovoltaic component junction box sensing and detecting device |
-
2014
- 2014-04-03 CN CN201410133481.3A patent/CN103956971A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1976026A2 (en) * | 2007-03-28 | 2008-10-01 | Günther Spelsberg GmbH & Co. KG | Junction box |
| CN201663404U (en) * | 2009-12-31 | 2010-12-01 | 镇江市通灵电器有限责任公司 | Solar junction box with heat sink |
| CN201773167U (en) * | 2010-08-23 | 2011-03-23 | 吕纪坤 | Photovoltaic component junction box sensing and detecting device |
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Application publication date: 20140730 |