CN211855203U - Photovoltaic support deformation detection device - Google Patents

Photovoltaic support deformation detection device Download PDF

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Publication number
CN211855203U
CN211855203U CN202020574087.4U CN202020574087U CN211855203U CN 211855203 U CN211855203 U CN 211855203U CN 202020574087 U CN202020574087 U CN 202020574087U CN 211855203 U CN211855203 U CN 211855203U
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China
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detection
strain gauge
voltage
bridge
module
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CN202020574087.4U
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唐建生
段春艳
冯泽君
许继源
李颖
连佳生
赖华景
陈潇跃
谢灏
柳淦元
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Foshan Polytechnic
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Foshan Polytechnic
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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 utility model discloses a photovoltaic support deformation detection device, include: one bridge arm of the detection bridge is connected with a detection strain gauge in series, and the detection strain gauge is pasted on the photovoltaic bracket; a DC voltage reference source for providing voltage for the detection bridge; the analog-to-digital conversion module is used for converting the output voltage of the detection bridge; the voltage data reading module is used for reading the conversion data of the analog-to-digital conversion module; a communication module for transmitting data; and the upper computer is used for receiving the data sent by the communication module. When the photovoltaic support is deformed, the detection strain gauge is also deformed, the resistance value of the detection strain gauge is correspondingly changed, the output voltage of the detection bridge is correspondingly changed, the deformation amount of the photovoltaic support can be obtained according to the relation between the voltage change and the strain gauge deformation, the deformation amount of the photovoltaic support can be displayed on the upper computer, operation and maintenance personnel can know the actual deformation condition of the photovoltaic support, and reference is provided for the advance maintenance of the operation and maintenance personnel of the power station.

Description

Photovoltaic support deformation detection device
Technical Field
The utility model relates to a photovoltaic power plant maintains technical field, in particular to photovoltaic support deformation detection device.
Background
With the continuous development of photovoltaic power generation in China, the newly increased and accumulated installed capacity of photovoltaic power stations in China is leading in the world, but meanwhile, the photovoltaic power stations have a lot of quality problems, the quality of the photovoltaic power stations is uneven, and the problem of how to scientifically operate and maintain the photovoltaic power stations also becomes an industrial focus; at present, a great deal of capital and energy are invested in the photovoltaic industry to try to improve the efficiency of the front industrial chain, but the attention degree of operation and maintenance work after the rear end power station of the industrial chain is built is not high enough, so that the efficiency of the photovoltaic industry is not improved to the maximum.
The photovoltaic support is used as an important component of the photovoltaic power station, bears a power generation main body of the photovoltaic power station, and directly influences the operation safety, the breakage rate and the construction investment of a photovoltaic module. At present, in the photovoltaic industry, strain detection aiming at a photovoltaic support is only analyzed through software modeling in the design stage of a power station, and the photovoltaic support is qualified as long as the strain of the photovoltaic support meets the national standard or the industrial standard in the analysis process. However, in actual use, due to the fact that variable loads are generated on the photovoltaic support by factors such as wind power, settlement and earthquake, or the deviation of a permanent load action point caused by non-standardization during installation, the situation that the photovoltaic support is damaged or even collapsed due to excessive deformation after the photovoltaic power station is installed cannot be guaranteed. At present, remote detection on deformation of the photovoltaic support is lacked, and operation and maintenance personnel can not clearly know the actual deformation condition of the photovoltaic support and can not maintain the photovoltaic support in advance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a photovoltaic support deformation detection device.
According to the utility model discloses a photovoltaic support deformation detection device, include: one bridge arm of the detection bridge is connected with a detection strain gauge in series, and the detection strain gauge is pasted on the photovoltaic bracket; the direct-current voltage reference source is used for providing voltage for the detection bridge and is electrically connected with the voltage input end of the detection bridge; the analog-to-digital conversion module is used for converting the output voltage of the detection bridge, and the voltage input end of the analog-to-digital conversion module is electrically connected with the voltage output end of the detection bridge; the voltage data reading module is used for reading the conversion data of the analog-to-digital conversion module and is electrically connected with the voltage data output end of the analog-to-digital conversion module; the communication module is used for sending data and is electrically connected with the voltage data reading module; and the upper computer is used for receiving the data sent by the communication module and is in communication connection with the communication module.
According to the utility model discloses photovoltaic support deformation detection device has following beneficial effect at least: a detection strain gauge in the detection bridge is pasted on the surface of the photovoltaic bracket to be detected, and a direct-current voltage reference source provides voltage for the detection bridge; when the photovoltaic support deforms, the detection strain gauge also deforms, the resistance value of the detection strain gauge correspondingly changes, and the output voltage of the detection bridge correspondingly changes; converting the output voltage of the detection bridge into voltage data by using an analog-to-digital conversion module, reading the voltage data by using a voltage data reading module, and obtaining the deformation quantity of the photovoltaic bracket according to the relation between the voltage change and the deformation of the strain gauge; and the measured data is sent to an upper computer positioned at a far end through a communication module, and the deformation quantity of the photovoltaic support can be displayed on the upper computer, so that operation and maintenance personnel can know the actual deformation condition of the photovoltaic support, and a reference is provided for the operation and maintenance personnel of the power station to maintain in advance.
According to the utility model discloses a some embodiments, the utility model discloses still include the calibration foil gage, the calibration foil gage connects in series make in another bridge arm of detection bridge detect the bridge and form half-bridge circuit structure, the side of photovoltaic support is equipped with the alignment support, the calibration foil gage paste in on the alignment support.
According to some embodiments of the utility model, detect the foil gage with the outside of calibration foil gage covers there is the protection to glue.
According to the utility model discloses a some embodiments, detect the connecting wire of foil gage with the connecting wire of calibration foil gage is two core shielded wires.
According to some embodiments of the invention, the communication module is a data transfer radio.
According to the utility model discloses a some embodiments, the utility model discloses still include aluminum alloy casing, the direct current voltage reference source the analog-to-digital conversion module voltage data read module with communication module all locates aluminum alloy casing's inside.
The utility model is used for photovoltaic support deformation detects.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.
Fig. 1 is a schematic perspective view of an embodiment of the present invention;
fig. 2 is a schematic diagram of a detection circuit according to an embodiment of the present invention.
In the drawings: 101-a photovoltaic support, 102-a calibration support, 103-an aluminum alloy shell, 201-a detection bridge, 202-a detection strain gauge, 203-a calibration strain gauge, 301-a direct current voltage reference source, 302-an analog-to-digital conversion module, 303-a voltage data reading module, 304-a communication module and 305-an upper computer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly defined, words such as set forth, connected, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the words in the present invention by combining the specific contents of the technical solutions.
The following describes a photovoltaic support 101 deformation detection device according to an embodiment of the present invention with reference to fig. 1 and 2.
Photovoltaic support 101 deformation detection device includes: a detection bridge 201, one bridge arm of which is connected in series with a detection strain gauge 202, and the detection strain gauge 202 is adhered to the photovoltaic bracket 101; a dc voltage reference source 301 for providing voltage to the detection bridge 201, electrically connected to the voltage input terminal of the detection bridge 201; an analog-to-digital conversion module 302 for converting the output voltage of the detection bridge 201, wherein a voltage input end of the analog-to-digital conversion module 302 is electrically connected with a voltage output end of the detection bridge 201; a voltage data reading module 303 for reading the conversion data of the analog-to-digital conversion module 302, electrically connected to the voltage data output terminal of the analog-to-digital conversion module 302; a communication module 304 for sending data, wherein the communication module 304 is electrically connected with the voltage data reading module 303; and the upper computer 305 is used for receiving the data sent by the communication module 304, and the upper computer 305 is in communication connection with the communication module 304.
The detection bridge 201 is a wheatstone bridge, four resistors are connected to form a bridge circuit of the detection bridge 201, the detection strain gauge 202 is one of the four resistors, and the detection strain gauge 202 is attached to the surface of the photovoltaic support 101 to be detected. The direct current voltage reference source 301 provides stable voltage for the detection bridge 201, and provides a voltage reference point for the analog-to-digital conversion module 302, and the direct current voltage reference source 301 may adopt an AD584 chip; when the photovoltaic support 101 deforms, the detection strain gauge 202 also deforms, the resistance value of the detection strain gauge 202 changes accordingly, and the output voltage of the detection bridge 201 also changes accordingly. The analog-to-digital conversion module 302 converts the analog signal into a digital signal, the analog-to-digital conversion module 302 converts the output voltage of the detection bridge 201 into voltage data, the voltage data reading module 303 reads the voltage data, and the deformation amount of the photovoltaic bracket 101 can be obtained according to the relation between the voltage change and the deformation of the strain gauge; the analog-to-digital conversion module 302 can adopt an ADS1256 chip, and the voltage data reading module 303 can adopt an STM32F103C8T6 chip, which are communicated by SPI. The measured data is sent to an upper computer 305 positioned at the far end through a communication module 304, the upper computer 305 can adopt a conventional industrial personal computer, the measured data is further processed by the upper computer 305, the deformation quantity of the photovoltaic bracket 101 can be displayed on the upper computer 305, so that operation and maintenance personnel can know the actual deformation condition of the photovoltaic bracket 101 through the upper computer 305, the operation and maintenance personnel do not need to arrive at the site to acquire or copy data, a reference is provided for the operation and maintenance personnel of the power station to maintain in advance, and an early warning effect is achieved,
an upper computer 305 can receive the detection data of a detection point, and also can correspond to a plurality of detection points simultaneously, and the plurality of detection points are placed at a plurality of different positions on the photovoltaic support 101, and can detect the deformation of different positions. The detection points can be selected by establishing a model of the photovoltaic support 101 through SAP2000 software, simulating the deformation condition of the photovoltaic support 101 under load on the software, and selecting the positions with serious deformation as the detection points.
In some embodiments of the utility model, the utility model discloses still include calibration foil gauge 203, calibration foil gauge 203 concatenates and makes detection bridge 201 form the half-bridge circuit structure in another bridge arm that detects bridge 201, and the side of photovoltaic support 101 is equipped with calibration support 102, and calibration foil gauge 203 pastes on calibration support 102.
The material of the calibration bracket 102 is the same as that of the photovoltaic bracket 101, and the calibration bracket 102 should be naturally placed beside the photovoltaic bracket 101, for example, on the ground, so that the calibration bracket 102 is not affected by external force, and the photovoltaic bracket 101 and the calibration bracket 102 are placed in substantially the same environmental temperature; the calibration strain gauge 203 is arranged in the detection bridge 201, so that data errors caused by the change of the detection strain gauge 202 along with the environmental temperature can be reduced by utilizing the characteristics of the bridge, the deformation of the photovoltaic bracket 101 caused by external force can be detected, and the detection precision is improved.
In some embodiments of the present invention, the outer sides of the detecting strain gauge 202 and the calibrating strain gauge 203 are covered with a protective adhesive. After the detection strain gauge 202 and the calibration strain gauge 203 are respectively adhered to the photovoltaic bracket 101 and the calibration bracket 102, the outer sides of the detection strain gauge 202 and the calibration strain gauge 203 are covered with protective glue, so that the service life of the photovoltaic bracket is prolonged when the photovoltaic bracket is in an outdoor environment for a long time. The protective rubber can be 704 silicon rubber, has excellent sealing performance and aging resistance, and is suitable for long-term outdoor use.
In some embodiments of the present invention, the connecting wires of the detection strain gauge 202 and the connecting wires of the calibration strain gauge 203 are two-core shielded wires. The connection line between the sensing strain gauge 202 and the calibration strain gauge 203 may be long, and the connection line may be shielded by a dual-core shielding line to avoid the interference of environmental noise.
In some embodiments of the present invention, the communication module 304 is a data transmission radio, and the data transmission radio has high speed and reliable data transmission characteristics.
In some embodiments of the present invention, the present invention further comprises an aluminum alloy housing 103, wherein the dc voltage reference source 301, the analog-to-digital conversion module 302, the voltage data reading module 303 and the communication module 304 are all disposed inside the aluminum alloy housing 103. The aluminum alloy housing 103 plays a role in protecting the direct-current voltage reference source 301, the analog-to-digital conversion module 302, the voltage data reading module 303, the communication module 304 and the other two resistors of the detection bridge 201 against water and dust. The aluminum alloy housing 103 has a good signal shielding effect, and can effectively reduce interference of external signals to each module inside the aluminum alloy housing 103. The aluminum alloy shell 103 is provided with a signal hole, and an antenna of the communication module 304 passes through the signal hole, so that the communication between the communication module 304 and the upper computer 305 is not affected.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various equivalent modifications or substitutions can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims (6)

1. The utility model provides a photovoltaic support deformation detection device which characterized in that includes:
one bridge arm of the detection bridge is connected with a detection strain gauge in series, and the detection strain gauge is pasted on the photovoltaic bracket;
the direct-current voltage reference source is used for providing voltage for the detection bridge and is electrically connected with the voltage input end of the detection bridge;
the analog-to-digital conversion module is used for converting the output voltage of the detection bridge, and the voltage input end of the analog-to-digital conversion module is electrically connected with the voltage output end of the detection bridge;
the voltage data reading module is used for reading the conversion data of the analog-to-digital conversion module and is electrically connected with the voltage data output end of the analog-to-digital conversion module;
the communication module is used for sending data and is electrically connected with the voltage data reading module;
and the upper computer is used for receiving the data sent by the communication module and is in communication connection with the communication module.
2. The deformation detection device of a photovoltaic bracket according to claim 1, further comprising a calibration strain gauge connected in series to the other arm of the detection bridge so that the detection bridge forms a half-bridge circuit structure, wherein a calibration bracket is arranged beside the photovoltaic bracket, and the calibration strain gauge is adhered to the calibration bracket.
3. The photovoltaic bracket deformation detection device according to claim 2, wherein the outer sides of the detection strain gauge and the calibration strain gauge are covered with a protective adhesive.
4. The photovoltaic bracket deformation detection device according to claim 2, wherein the connection line of the detection strain gauge and the connection line of the calibration strain gauge are both double-core shielding lines.
5. The photovoltaic bracket deformation detection device of claim 1, wherein the communication module is a data transmission station.
6. The photovoltaic bracket deformation detection device according to claim 1, further comprising an aluminum alloy casing, wherein the direct-current voltage reference source, the analog-to-digital conversion module, the voltage data reading module and the communication module are all arranged inside the aluminum alloy casing.
CN202020574087.4U 2020-04-16 2020-04-16 Photovoltaic support deformation detection device Active CN211855203U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020574087.4U CN211855203U (en) 2020-04-16 2020-04-16 Photovoltaic support deformation detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020574087.4U CN211855203U (en) 2020-04-16 2020-04-16 Photovoltaic support deformation detection device

Publications (1)

Publication Number Publication Date
CN211855203U true CN211855203U (en) 2020-11-03

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CN202020574087.4U Active CN211855203U (en) 2020-04-16 2020-04-16 Photovoltaic support deformation detection device

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CN (1) CN211855203U (en)

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