CN206775471U - For monitoring the wireless terminal of photovoltaic module - Google Patents
For monitoring the wireless terminal of photovoltaic module Download PDFInfo
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- CN206775471U CN206775471U CN201720614971.4U CN201720614971U CN206775471U CN 206775471 U CN206775471 U CN 206775471U CN 201720614971 U CN201720614971 U CN 201720614971U CN 206775471 U CN206775471 U CN 206775471U
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- wireless terminal
- variable gain
- gain amplifier
- antenna
- amplifying circuit
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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 wireless terminal for monitoring photovoltaic module is the utility model is related to, including：Antenna, receiving power amplifying circuit, the first filter circuit, spread-spectrum modulation and demodulation circuit, codec, processor, radio circuit, transmission power amplifying circuit, the second filter circuit, power detector, wire communication interface；The receiving power amplifying circuit includes the first variable gain amplifier, the first D/A converter；The transmission power amplifying circuit includes the second variable gain amplifier, the second D/A converter.The wireless terminal for being used to monitor photovoltaic module of the present embodiment, with the advantage that energy consumption is low, small volume, reliability are high, enable wireless terminal preferably to adapt to field rugged environment, realize the automatic monitoring to large-scale photovoltaic power generation equipment, reduce the energy consumption and maintenance cost of system.
Description
Technical field
It the utility model is related to photovoltaic apparatus monitoring technology field, and in particular to for monitoring the wireless end of photovoltaic module
End.
Background technology
Solar energy is increasingly favored by people, greatly develops photovoltaic industry and is approved in the world, and into
For the important component of various countries' energy development.Planned according to " 13 ", the installation of the year two thousand twenty photovoltaic generation will reach 1.05 hundred million
More than kilowatt.However, the operation management problem faced with a large amount of construction photovoltaic plants also becomes increasingly conspicuous, photovoltaic generation scene
The field of spaciousness is in, natural environment is more severe, from central station of floating dock farther out, it has not been convenient to manual patrol so that photovoltaic case becomes
To monitor difficult point, to huge photovoltaic array progress, monitoring, Breakdown Maintenance, remote-control turn into solar-electricity station administration in real time
One of important content.
In photovoltaic generation industry, the communication subsystem in photovoltaic module monitoring system is by traditional wired and wireless two kinds
Mode forms.Wired mode typically uses RS485 bus network, on same bus, can at most mount 32 nodes, deployment
It is required that high, it is necessary to lay private cable, and can supporting node be limited.Wireless mode is typically using mobile communication such as GPRS/3G/4G
Carrier network, more certain than cable network more flexible, easily deployment, but data traffic cost is high, and it is limited to carrier network
Coverage.
Wired mode is that the Monitoring Data collected is sent to base station, base by front end monitoring collection equipment by wireless terminal
Stand and be transferred to remote monitoring end after collecting the data that wireless terminal is sent, statistical summaries are carried out to data by remote monitoring end, it is real
Now automate management and control photovoltaic generating system.Wireless terminal is in highly important status in whole managing and control system, therefore, it is necessary to
The performance of wireless terminal is improved to adapt to the adverse circumstances in field.
Utility model content
For in the prior art the defects of, it is provided by the utility model to be used to monitor the wireless terminal of photovoltaic module, have
The advantage that energy consumption is low, small volume, reliability are high so that wireless terminal can preferably adapt to field rugged environment, realize pair
The automatic monitoring of large-scale photovoltaic power generation equipment, reduce the energy consumption and maintenance cost of system.
In a first aspect, the utility model provides a kind of wireless terminal for being used to monitor photovoltaic module, including：Antenna, connect
Receive power amplification circuit, the first filter circuit, spread-spectrum modulation and demodulation circuit, codec, processor, radio circuit, transmitting work(
Rate amplifying circuit, the second filter circuit, power detector, wire communication interface；The receiving power amplifying circuit includes first
Variable gain amplifier, the first D/A converter；The transmission power amplifying circuit includes the second variable gain amplifier, the 2nd DA
Converter；The antenna, the receiving power amplifying circuit, first filter circuit, the spread-spectrum modulation and demodulation circuit, institute
State codec, the processor, wire communication interfacing order connection, the spread-spectrum modulation and demodulation circuit, the radio frequency
Circuit, the transmission power amplifying circuit, antenna order connection, the antenna, second filter circuit, the power
Detector, the processor are linked in sequence, and the input of first variable gain amplifier is connected with the antenna, and described
The output end of one variable gain amplifier is connected with first wave filter, the control terminal of first variable gain amplifier with
The output end connection of first D/A converter, the input of first D/A converter is connected with the processor, and described the
The output end of two variable gain amplifiers is connected with the antenna, input and the expansion of second variable gain amplifier
Frequency modulation-demodulation circuit connects, and the output end of the control terminal of second variable gain amplifier and second D/A converter connects
Connect, the input of second D/A converter is connected with the processor.
The wireless terminal for being used to monitor photovoltaic module of the present embodiment, on the one hand by detecting the signal power received certainly
Dynamic regulation receiving power amplifying circuit, improve the signal to noise ratio of reception signal；On the other hand, by detecting the signal power received
Automatically adjust the gain of transmission power amplifying circuit so that the distance that wireless terminal can be according to wireless terminal apart from base station, from
Dynamic regulation transmission power, avoids unnecessary energy loss.Photovoltaic generation scene managing and control system based on above-mentioned wireless terminal
The wild environment of complexity is can adapt to, suitable for the automatic monitoring of large-scale photovoltaic power generation equipment, reduces the energy consumption of system
And maintenance cost.
Preferably, the antenna is the sheet metal for the housing outer surface for being attached to the wireless terminal, the transmission power
The distributing point of amplifying circuit is connected with the antenna by plain conductor.
Preferably, the processor is any one in MCU, CPU, FPGA, DSP, ARM, ASIC.
Preferably, the wireless terminal is powered using 5V power supply modules.
Preferably, the power detector is AD8307.
Preferably, first filter circuit includes low-noise amplifier.
Preferably, the receiving power amplifying circuit includes multistage first variable gain amplifier series connection, the transmitting work(
Rate amplifying circuit includes multistage second variable gain amplifier and connected.
Preferably, the wire communication interface is RS485 interfaces.
Brief description of the drawings
The circuit module figure for being used to monitor the wireless terminal of photovoltaic module that Fig. 1 is provided by the utility model embodiment；
The connection diagram for the receiving power amplifying circuit that Fig. 2 is provided by the utility model embodiment；
The connection diagram for the transmission power amplifying circuit that Fig. 3 is provided by the utility model embodiment.
Embodiment
The embodiment of technical solutions of the utility model is described in detail below in conjunction with accompanying drawing.Following examples are only
For clearly illustrating the technical solution of the utility model, therefore example is intended only as, and this reality can not be limited with this
With new protection domain.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this reality
The ordinary meaning understood with new one of ordinary skill in the art.
Photovoltaic generation scene managing and control system includes remote monitoring end, base station, wireless terminal, front end monitoring collection equipment.Before
End monitoring collection equipment is arranged near each monitored photovoltaic module, is sent to by wireless terminal by Monitoring Data is gathered
Base station, base station are collected the data that all wireless terminals in its wireless signal coverage are sent, are transferred to remotely by optical fiber
Monitoring client, statistical summaries are carried out to data by remote monitoring end.
As shown in Figure 1, 2, 3, a kind of wireless terminal for being used to monitor photovoltaic module is present embodiments provided, including：Antenna,
Receiving power amplifying circuit, the first filter circuit, spread-spectrum modulation and demodulation circuit, codec, processor, radio circuit, transmitting
Power amplification circuit, the second filter circuit, power detector, wire communication interface.
Receiving power amplifying circuit includes the first variable gain amplifier, the first D/A converter.
Transmission power amplifying circuit includes the second variable gain amplifier, the second D/A converter.
Antenna, receiving power amplifying circuit, the first filter circuit, spread-spectrum modulation and demodulation circuit, codec, processor,
Wire communication interfacing order connects, spread-spectrum modulation and demodulation circuit, radio circuit, transmission power amplifying circuit, antenna order connection,
Antenna, the second filter circuit, power detector, processor are linked in sequence, the input and antenna of the first variable gain amplifier
Connection, the output end of the first variable gain amplifier is connected with the first wave filter, the control terminal of the first variable gain amplifier and
The output end connection of first D/A converter, the input of the first D/A converter are connected with processor, the second variable gain amplifier
Output end be connected with antenna, the input of the second variable gain amplifier is connected with spread-spectrum modulation and demodulation circuit, and second is variable
The control terminal of gain amplifier is connected with the output end of the second D/A converter, and input and the processor of the second D/A converter connect
Connect.
Wireless terminal receives the data collection request signal of base station transmission by antenna, receives power amplification circuit by receiving
The first filter circuit of input amplification is filtered after signal amplification, to reduce the noise jamming during long-distance transmissions, increase
The distribution of wireless terminal spatially；Signal after noise reduction is laggard by spread-spectrum modulation and demodulation circuit, codec handling
Enter processor；Processor obtains after data harvesting request is received, by wire communication interface from front end monitoring collection equipment
Monitoring Data, it will amplify after Monitoring Data addition wireless device identifier through spread-spectrum modulation and demodulation circuit, radio circuit, transmission power
Circuit, antenna feedback to base station, wherein, each wireless terminal has unique mark, facilitates remote monitoring end fixed according to mark
The each wireless terminal in position.
When wireless terminal antenna receives data collection request signal, pass through the second filter circuit, power detector pair
The signal received carries out power detection, the performance number input processor that will be detected；Processor is according to performance number to the first DA
Converter exports the first yield value, goes out the second yield value to the second D/A converter；The signal of processor output is data signal, the
First yield value is converted to the first analog voltage by one D/A converter, inputs the control terminal of the first variable gain amplifier, the
One variable gain amplifier adjusts gain according to the magnitude of voltage of control terminal；Second yield value is converted to second by the second D/A converter
Analog voltage, the control terminal of the second variable gain amplifier is inputted, the second variable gain amplifier is according to the voltage of control terminal
Value regulation gain.
Wireless terminal is more remote apart from base station, and the signal power received is smaller.The wireless terminal of the present embodiment is on the one hand logical
Cross the signal power that detection receives and automatically adjust receiving power amplifying circuit, improve the signal to noise ratio of reception signal；On the other hand,
The gain of transmission power amplifying circuit is automatically adjusted by detecting the signal power received so that wireless terminal can be according to nothing
Line terminal automatically adjusts transmission power, avoids unnecessary energy loss apart from the distance of base station.Based on above-mentioned wireless terminal
Photovoltaic generation scene managing and control system can adapt to complexity wild environment, suitable for the automatic of large-scale photovoltaic power generation equipment
Monitoring, reduce the energy consumption and maintenance cost of system.
Received to improve the signal of wireless terminal, radiation scope, antenna is the housing outer surface for being attached to wireless terminal
Sheet metal, the distributing point of transmission power amplifying circuit are connected with antenna by plain conductor.With the housing appearance of wireless terminal
The sheet metal in face is antenna, adds the effective radiating area of antenna, improves the radiation efficiency of antenna so that wireless terminal
Can be laid in apart from the farther position in base station, reduces the laying quantity of base station.In addition, above-mentioned design reduces wireless terminal
Volume, it is not necessary to design independent antenna element in addition, ensure that antenna is hardly damaged.
Wherein, processor can use CPU, FPGA, DSP, ARM, ASIC, or other have the microprocessor of identical function
Device chip is realized, can be carried out selection design according to the concrete condition of practical application, not repeated herein.
In order to reduce the power consumption of wireless terminal, wireless terminal is powered using 5V power supply modules.
Wherein, power detector is preferably AD8307.AD8307 is a monolithic 500MHz based on continuous compression technology
Demodulating logarithmic amplifier, there is provided the good power detection linearity, improve the precision of power detection.
Wherein, the first filter circuit includes low-noise amplifier.The noise coefficient of low-noise amplifier is very low, micro- amplifying
, can be with interference of the step-down amplifier self-noise to signal, to improve the signal to noise ratio of output during weak signal.
Wherein, receiving power amplifying circuit includes multistage first variable gain amplifier series connection, transmission power amplifying circuit
Including multistage second variable gain amplifier series connection.By way of amplifier multi-stage cascade, convenient free regulation gain times
Number, selects suitable gain, while smoothly communication is ensured, reduces power consumption as far as possible.
Wherein, wire communication interface is RS485 interfaces, with the output interface phase with original front end monitoring collection equipment
Match somebody with somebody.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type, it all should cover among claim of the present utility model and the scope of specification.
Claims (8)
- A kind of 1. wireless terminal for being used to monitor photovoltaic module, it is characterised in that including：Antenna, receiving power amplifying circuit, the first filter circuit, spread-spectrum modulation and demodulation circuit, codec, processor, radio frequency Circuit, transmission power amplifying circuit, the second filter circuit, power detector, wire communication interface；The receiving power amplifying circuit includes the first variable gain amplifier, the first D/A converter；The transmission power amplifying circuit includes the second variable gain amplifier, the second D/A converter；It is the antenna, the receiving power amplifying circuit, first filter circuit, the spread-spectrum modulation and demodulation circuit, described Codec, the processor, wire communication interfacing order connection,The spread-spectrum modulation and demodulation circuit, the radio circuit, the transmission power amplifying circuit, antenna order connection,The antenna, second filter circuit, the power detector, the processor are linked in sequence,The input of first variable gain amplifier is connected with the antenna, the output of first variable gain amplifier End is connected with first wave filter, the output of the control terminal of first variable gain amplifier and first D/A converter End connection, the input of first D/A converter are connected with the processor,The output end of second variable gain amplifier is connected with the antenna, the input of second variable gain amplifier End is connected with the spread-spectrum modulation and demodulation circuit, the control terminal of second variable gain amplifier and second D/A converter Output end connection, the input of second D/A converter is connected with the processor.
- 2. wireless terminal according to claim 1, it is characterised in that the antenna is the housing for being attached to the wireless terminal The sheet metal of outer surface, the distributing point of the transmission power amplifying circuit are connected with the antenna by plain conductor.
- 3. wireless terminal according to claim 1, it is characterised in that the processor be MCU, CPU, FPGA, DSP, Any one in ARM, ASIC.
- 4. wireless terminal according to claim 1, it is characterised in that the wireless terminal is powered using 5V power supply modules.
- 5. wireless terminal according to claim 1, it is characterised in that the power detector is AD8307.
- 6. wireless terminal according to claim 1, it is characterised in that first filter circuit includes low noise amplification Device.
- 7. wireless terminal according to claim 1, it is characterised in that the receiving power amplifying circuit includes multistage first Variable gain amplifier is connected, and the transmission power amplifying circuit includes multistage second variable gain amplifier and connected.
- 8. wireless terminal according to claim 1, it is characterised in that the wire communication interface is RS485 interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720614971.4U CN206775471U (en) | 2017-05-27 | 2017-05-27 | For monitoring the wireless terminal of photovoltaic module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720614971.4U CN206775471U (en) | 2017-05-27 | 2017-05-27 | For monitoring the wireless terminal of photovoltaic module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206775471U true CN206775471U (en) | 2017-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720614971.4U Active CN206775471U (en) | 2017-05-27 | 2017-05-27 | For monitoring the wireless terminal of photovoltaic module |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090073A (en) * | 2019-11-27 | 2020-05-01 | 安徽大恒能源科技有限公司 | Automatic scanning and matching method for physical position and virtual position of intelligent photovoltaic power station |
-
2017
- 2017-05-27 CN CN201720614971.4U patent/CN206775471U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111090073A (en) * | 2019-11-27 | 2020-05-01 | 安徽大恒能源科技有限公司 | Automatic scanning and matching method for physical position and virtual position of intelligent photovoltaic power station |
| CN111090073B (en) * | 2019-11-27 | 2023-03-17 | 安徽大恒能源科技有限公司 | Automatic scanning and matching method for physical position and virtual position of intelligent photovoltaic power station |
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