CN107064547A - Wind speed detection device and method for household wind and solar hybrid wind turbine generator - Google Patents

Wind speed detection device and method for household wind and solar hybrid wind turbine generator Download PDF

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Publication number
CN107064547A
CN107064547A CN201710055478.8A CN201710055478A CN107064547A CN 107064547 A CN107064547 A CN 107064547A CN 201710055478 A CN201710055478 A CN 201710055478A CN 107064547 A CN107064547 A CN 107064547A
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China
Prior art keywords
wind
wind speed
data
speed data
complementary type
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Pending
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CN201710055478.8A
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Chinese (zh)
Inventor
王青
李中年
李天鹰
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NANTONG INSTITUTE OF TECHNOLOGY
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NANTONG INSTITUTE OF TECHNOLOGY
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Priority to CN201710055478.8A priority Critical patent/CN107064547A/en
Publication of CN107064547A publication Critical patent/CN107064547A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/30Wind power

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The invention discloses a wind speed detection device and method for a household wind-solar complementary wind turbine generator, which comprises the following steps: the wind speed sensor is used for acquiring wind speed data; the transmission processing circuit is used for transmitting and processing the wind speed data acquired by the wind speed sensor; the coordinator is used for coordinating the processed wind speed data to form coordinated wind speed data; the data storage component is used for storing the coordinated wind speed data; the network server is used for uploading the coordinated wind speed data stored by the data storage component to a network; and the user mobile terminal is provided with a wind speed query module, and the user queries the coordinated wind speed data from the network server through the wind speed query module. The wind speed detection device and method for the household wind and light complementary wind turbine generator can effectively transmit detection data on a fan in a wireless mode, a cable is not needed, operation is more convenient and fast, and the service life is longer.

Description

A kind of wind speed detection device and method for domestic wind and light complementary type Wind turbines
Technical field
The present invention relates to a kind of wind speed detection device and method for domestic wind and light complementary type Wind turbines.
Background technology
With the development of science and technology domestic wind and light complementary type Wind turbines also come into vogue in each family gradually, family expenses Wind-solar complementary type Wind turbines equipment is generally disposed at tower top, and existing technology is mainly what is installed on the head of blower fan Anemobiagraph, and the output of the parameter of anemobiagraph needs to be transferred on terminal presentation facility by the cable in pylon.
It is time-consuming because the rotation of blower fan head makes the cable in pylon wrapped around one another together, it is necessary to manually untied the mooring rope Arduously.Even if the yaw system in Wind turbines can be deflected to head carries out appropriate control, long-term in the past also by direct shadow Ring the service life of cable.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of wind speed for domestic wind and light complementary type Wind turbines Detection means and method, the apparatus structure are simple, can effectively by the detection data on blower fan by being wirelessly transmitted, without Cable is set, and it is more convenient to operate, and service life is longer, and data transfer is more stable, and family expenses Wind turbines wind speed is effectively supervised Control.
In order to achieve the above object, technical scheme is as follows:
A kind of wind speed detection device for domestic wind and light complementary type Wind turbines includes:
Air velocity transducer, is arranged on blower fan, for gathering air speed data;
Transmission process circuit, is connected with air velocity transducer, for being transmitted to the air speed data that air velocity transducer is gathered And processing;
Telegon, is connected with transmission process circuit, for coordinating to the air speed data after processing, is formed and coordinates wind speed Data;
Data preserve component, are connected with telegon, for being preserved to coordinating air speed data;
The webserver, preserves component with data and is connected, for data to be preserved into the coordination air speed data that component is preserved Reach network;
Customer mobile terminal, on customer mobile terminal be provided with wind speed enquiry module, user by wind speed enquiry module from Inquired about on the webserver coordinating air speed data.
A kind of wind for domestic wind and light complementary type Wind turbines for domestic wind and light complementary type Wind turbines of the invention Speed detector is simple in construction, and air speed data is acquired using air velocity transducer, using transmission process circuit to wind speed number According to being transmitted, Coordination Treatment is carried out to air speed data using telegon, preserve component using data enters to coordinating air speed data Row preserve, using the webserver by coordinate air speed data be uploaded to network, for by customer mobile terminal to air speed data Inquired about in real time.
The present invention can be effectively by the detection data on blower fan by being wirelessly transmitted, and without setting cable, operation is more Convenient, service life is longer, and data transfer is more stable, and effective monitoring is carried out to family expenses Wind turbines wind speed.
On the basis of above-mentioned technical proposal, following improvement can be also done:
As preferred scheme, air velocity transducer is connected by RS485 interfaces with transmission process circuit.
Using above-mentioned preferred scheme, data transfer is more rapidly effective, anti-tampering.
As preferred scheme, air velocity transducer uses three-cup wind speed sensor, and transmission process circuit is by CC2530 cores Piece is constituted, and data preserve component and use SQLite databases.
Using above-mentioned preferred scheme, the selection of chip is more reasonable, and service life is longer, and performance is more stable.
As preferred scheme, customer mobile terminal is the one or more in mobile phone, notebook, tablet personal computer.
Using above-mentioned preferred scheme, according to for concrete condition selected.
As preferred scheme, the wind speed detection device for domestic wind and light complementary type Wind turbines also includes:Buzzer And/or warning lamp group, buzzer and/or warning lamp group are connected with transmission process circuit.
Using above-mentioned preferred scheme, when exception occurs in the wind speed detection device for domestic wind and light complementary type Wind turbines During situation, buzzer and/or warning lamp group are started working, and effectively play warning function.
As preferred scheme, transmission process circuit, telegon and data preserve component and are arranged in housing, and housing Including the first housing section and the second housing section, the first housing section section is in " Jiong " font, convex provided with clamping in the first housing section The portion of rising, provided with the clamping concave part matched with clamping lug boss in the second housing section, provided with radiating on the inwall of housing Piece, diffusion sheet is provided with multiple through holes.
Using above-mentioned preferred scheme, it is easy to the wind speed detection device progress for domestic wind and light complementary type Wind turbines Maintenance and part replacement, and good sealing effect are moistureproof;Fin can effectively carry out heat transfer, it is ensured that its radiating effect is good It is good.
A kind of wind speed measurement method for domestic wind and light complementary type Wind turbines, using for domestic wind and light complementary type wind The wind speed detection device of group of motors is detected, specifically includes following steps:
1) air velocity transducer collection air speed data, air speed data is with carrying the air velocity transducer corresponding to the air speed data Location;
2) receiving terminal of transmission process circuit receive at regular intervals air velocity transducer collection air speed data, and according to The message numerical value that air velocity transducer is returned is analyzed and handled, and the transmitting terminal of transmission process circuit is by the air speed data after processing It is sent to telegon;
3) telegon is carried out after Coordination Treatment to the air speed data after processing, is formed coordination air speed data and is sent to data guarantor Component is deposited to be preserved;
4) the coordination air speed data that data preserve component preservation is uploaded to network by the webserver;
5) user is inquired about coordinating air speed data by the wind speed enquiry module on customer mobile terminal.
A kind of wind speed measurement method simple operation for domestic wind and light complementary type Wind turbines of the invention, can be effectively real Show being wirelessly transferred for air speed data.
It is used as preferred scheme, step 3) also include herein below:
The network address of each air velocity transducer is preserved in telegon, telegon will by air velocity transducer address information Air speed data is saved into the corresponding network address, is formed and is coordinated air speed data.
Using above-mentioned preferred scheme, which air velocity transducer user can understand the air speed data in time from, It is easy to user to make accurate decision-making.
As preferred scheme, the wind speed measurement method for domestic wind and light complementary type Wind turbines also includes in following Hold:
When the wind speed detection device for domestic wind and light complementary type Wind turbines occurs abnormal, buzzer and/or warning Lamp group is started working.
Using above-mentioned preferred scheme, fault cues can be carried out to user in time.
As preferred scheme, the wind speed measurement method for domestic wind and light complementary type Wind turbines also includes in following Hold:
When the wind speed detection device for domestic wind and light complementary type Wind turbines occurs abnormal, transmission process circuit will be former Barrier situation is sent to data by telegon and preserved after component preservation, is uploaded to network by the webserver, is looked into by wind speed Module is ask to point out user.
Using above-mentioned preferred scheme, fault cues can be carried out to user in time.
Brief description of the drawings
Fig. 1 is a kind of wind speed detection device for domestic wind and light complementary type Wind turbines provided in an embodiment of the present invention Structured flowchart.
Fig. 2 is a kind of wind speed detection device for domestic wind and light complementary type Wind turbines provided in an embodiment of the present invention Circuit diagram.
Fig. 3 is the sectional view of housing provided in an embodiment of the present invention.
Wherein:1 air velocity transducer, 2 transmission process circuits, 3 telegons, 4 data preserve component, 5 webservers, 6 use Family mobile terminal, 7 housings, 71 first housing sections, 711 clamping lug bosses, 72 second housing sections, 721 clamping concave parts.
Embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, a kind of wind speed detection device and side for domestic wind and light complementary type Wind turbines In some of embodiments of method,
As shown in Figure 1-2, a kind of wind speed detection device for domestic wind and light complementary type Wind turbines includes:
Air velocity transducer 1, is arranged on blower fan, for gathering air speed data;
Transmission process circuit 2, is connected with air velocity transducer 1, for being passed to the air speed data that air velocity transducer 1 is gathered Defeated and processing;
Telegon 3, is connected with transmission process circuit 2, for coordinating to the air speed data after processing, is formed and coordinates wind Fast data;
Data preserve component 4, are connected with telegon 3, for being preserved to coordinating air speed data;
The webserver 5, preserves component 4 with data and is connected, for data to be preserved into the coordination air speed data that component 4 is preserved It is uploaded to network;
Customer mobile terminal 6, is provided with wind speed enquiry module on customer mobile terminal 6, and user passes through wind speed enquiry module Inquired about from the webserver 5 coordinating air speed data.
Air velocity transducer 1 is connected by RS485 interfaces with transmission process circuit 2.
Air velocity transducer 1 uses three-cup wind speed sensor, and the range of air velocity transducer 1 is in 0-30m/s, and precision is 0.1m/s, the output of air velocity transducer 1 is exported using military aviation plug by RS485 interfaces.
Transmission process circuit 2 is made up of CC2530 chips, and the air speed data of acquisition is handled.
Data preserve component 4 and use SQLite databases, and it is very low that it takes resource.
Customer mobile terminal 6 is the one or more in mobile phone, notebook, tablet personal computer.Pass through the network service of foundation Device 5, the air speed data that the wind speed enquiry module access detection that user not only can be by public network at PC ends is arrived, and can utilize WIFI the corresponding air speed data of real time inspection and is operated accordingly on the wind speed enquiry module of mobile terminal device.
A kind of wind speed measurement method for domestic wind and light complementary type Wind turbines, using for domestic wind and light complementary type wind The wind speed detection device of group of motors is detected, specifically includes following steps:
1) collection of air velocity transducer 1 air speed data, air speed data carries the air velocity transducer 1 corresponding to the air speed data Address;
2) receiving terminal of transmission process circuit 2 receives what air velocity transducer 1 was gathered according to MODBUS-RTU agreements per 50ms Air speed data, and analyzed and handled according to the message numerical value of the return of air velocity transducer 1, the electromagnetic wave for then passing through standard is assisted View is transmitted in 2.4GH frequency range, and the air speed data after processing is sent to telegon by the transmitting terminal of transmission process circuit 2 3;
3) network address of each air velocity transducer 1 is preserved in telegon 3, telegon 3 passes through the address of air velocity transducer 1 Air speed data after processing is saved into the corresponding network address by information, is formed and is coordinated air speed data, and sends it to number Preserved according to component 4 is preserved;
4) the coordination air speed data that data preservation component 4 is preserved is uploaded to network by the webserver 5;
5) user is inquired about coordinating air speed data by the wind speed enquiry module on customer mobile terminal 6.
By air velocity transducer node after network is added, the network address of terminal air velocity transducer 1 is sent to telegon 3, telegon 3 receives and just can set up address table behind the network address of air velocity transducer node and stored, so as to by wind speed Data are saved into the corresponding network address, are formed and are coordinated air speed data, and user can understand the air speed data in time and derive from Which air velocity transducer 1, is easy to user to make accurate decision-making.
A kind of wind speed detection device for domestic wind and light complementary type Wind turbines of the invention is simple in construction, is passed using wind speed Sensor 1 is acquired to air speed data, and air speed data is transmitted using transmission process circuit 2, using telegon 3 to wind speed Data carry out Coordination Treatment, and preserving 4 pairs of coordination air speed datas of component using data preserves, and will be assisted using the webserver 5 Air speed data is adjusted to be uploaded to network, for being inquired about in real time air speed data by customer mobile terminal 6.
Present invention is mainly applied on domestic wind and light complementary type Wind turbines, effectively can lead to the detection data on blower fan Cross and be wirelessly transmitted, without setting cable, the limitation of the drawbacks of solving cable transmission and space-time, it is more convenient to operate, and uses the longevity Life is longer, and data transfer is more stable, and effective monitoring is carried out to family expenses Wind turbines wind speed.
In order to further optimize the implementation result of the present invention, in other embodiment, remaining feature technology phase Together, difference is, transmission process circuit 2 is handled the size of air speed data, change speed, and form, figure is made, It is sent to network to be preserved, so that user looks into the size of air speed data and change speed degree from wind speed enquiry module Ask, make and more reasonably judging and decision-making.
Meanwhile, domestic wind and light complementary type Wind turbines can implement lease, and company is unified to be equipped with many domestic wind and light complementaries Type Wind turbines, every has different codings, and transmission process circuit 2 can carry the coding when transmitting air speed data.Together When, different users have different access authorities when being inquired about using wind speed enquiry module, can only consult itself family expenses The air speed data that is gathered of wind-solar complementary type Wind turbines.
In order to further optimize the implementation result of the present invention, in other embodiment, remaining feature technology phase Together, difference is, the wind speed detection device for domestic wind and light complementary type Wind turbines also includes:Buzzer and/or police Show lamp group, buzzer and/or warning lamp group are connected with transmission process circuit 2.
Wind speed measurement method for domestic wind and light complementary type Wind turbines also includes herein below:When for domestic wind and light When the wind speed detection device of complementary type Wind turbines occurs abnormal, buzzer and/or warning lamp group are started working.
Using above-mentioned preferred scheme, when exception occurs in the wind speed detection device for domestic wind and light complementary type Wind turbines During situation, buzzer and/or warning lamp group are started working, and effectively play warning function.
As shown in figure 3, the implementation result in order to further optimize the present invention, in other embodiment, remaining Feature technology is identical, and difference is, transmission process circuit 2, telegon 3 and data preserve component 4 and are arranged at housing 7 It is interior, and housing 7 includes the first housing section 71 and the second housing section 72, the section of the first housing section 71 is in " Jiong " font, in first shell Body portion 71 is provided with clamping lug boss 711, provided with the clamping groove matched with clamping lug boss 711 in the second housing section 72 Portion 721, is provided with fin (not shown) on the inwall of housing 7, and diffusion sheet is provided with multiple through holes.
Using above-mentioned preferred scheme, it is easy to the wind speed detection device progress for domestic wind and light complementary type Wind turbines Maintenance and part replacement, and good sealing effect are moistureproof;Fin can effectively carry out heat transfer, it is ensured that its radiating effect is good It is good.
In this embodiment it is possible to multiple clamping lug bosses 711 and multiple clamping concave parts 721 are set, and multiple clampings Projection 711 and multiple clamping grooves 721 are in set at equal intervals, it is ensured that the first housing section of the uniformity and guarantee of each several part stress 71 and second housing section 72 degree of being connected firmly.
In order to further optimize the implementation result of the present invention, in other embodiment, remaining feature technology phase Together, difference is, the wind speed measurement method for domestic wind and light complementary type Wind turbines also includes herein below:
When the wind speed detection device for domestic wind and light complementary type Wind turbines occurs abnormal, transmission process circuit 2 will Failure situation is sent to data by telegon 3 and preserved after the preservation of component 4, is uploaded to network by the webserver 5, passes through wind Fast enquiry module is pointed out user.
The above is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, Without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.

Claims (10)

1. a kind of wind speed detection device for domestic wind and light complementary type Wind turbines, it is characterised in that including:
Air velocity transducer, is arranged on the blower fan, for gathering air speed data;
Transmission process circuit, is connected with the air velocity transducer, and the air speed data for being gathered to the air velocity transducer is carried out Transmission and processing;
Telegon, is connected with the transmission process circuit, for coordinating to the air speed data after processing, is formed and coordinates wind speed Data;
Data preserve component, are connected with the telegon, for being preserved to coordinating air speed data;
The webserver, preserves component with the data and is connected, for the data to be preserved into the coordination wind speed number that component is preserved According to being uploaded to network;
Customer mobile terminal, is provided with wind speed enquiry module on the customer mobile terminal, and user inquires about mould by the wind speed Block is inquired about coordinating air speed data from the webserver.
2. the wind speed detection device according to claim 1 for domestic wind and light complementary type Wind turbines, it is characterised in that The air velocity transducer is connected by RS485 interfaces with the transmission process circuit.
3. the wind speed detection device according to claim 1 for domestic wind and light complementary type Wind turbines, it is characterised in that The air velocity transducer uses three-cup wind speed sensor, and the transmission process circuit is made up of CC2530 chips, the data Preserve component and use SQLite databases.
4. the wind speed detection device according to claim 1 for domestic wind and light complementary type Wind turbines, it is characterised in that The customer mobile terminal is the one or more in mobile phone, notebook, tablet personal computer.
5. the wind speed detection device according to claim 1 for domestic wind and light complementary type Wind turbines, it is characterised in that The wind speed detection device for domestic wind and light complementary type Wind turbines also includes:Buzzer and/or warning lamp group, the honeybee Ring device and/or the warning lamp group are connected with the transmission process circuit.
6. the wind speed detection device according to claim 1 for domestic wind and light complementary type Wind turbines, it is characterised in that The transmission process circuit, the telegon and the data preserve component and are arranged in housing, and the housing includes the One housing section and the second housing section, the first housing section section is in " Jiong " font, and clamping is provided with first housing section Lug boss, provided with the clamping concave part matched with the clamping lug boss in second housing section, in the housing Inwall is provided with fin, and the diffusion sheet is provided with multiple through holes.
7. a kind of wind speed measurement method for domestic wind and light complementary type Wind turbines, it is characterised in that utilize claim 1-6 The wind speed detection device for domestic wind and light complementary type Wind turbines described in any one is detected, specifically includes following step Suddenly:
1) air velocity transducer collection air speed data, the air speed data is with carrying the air velocity transducer corresponding to the air speed data Location;
2) receiving terminal of transmission process circuit receives the air speed data of air velocity transducer collection at regular intervals, and according to The message numerical value that the air velocity transducer is returned is analyzed and handled, and the transmitting terminal of the transmission process circuit is by after processing Air speed data is sent to telegon;
3) telegon is carried out after Coordination Treatment to the air speed data after processing, is formed coordination air speed data and is sent to data preservation group Part is preserved;
4) the coordination air speed data that the data preserve component preservation is uploaded to network by the webserver;
5) user is inquired about coordinating air speed data by the wind speed enquiry module on customer mobile terminal.
8. the wind speed measurement method according to claim 7 for domestic wind and light complementary type Wind turbines, it is characterised in that The step 3) also include herein below:
The network address of each air velocity transducer is preserved in the telegon, the telegon is believed by air velocity transducer address Air speed data is saved into the corresponding network address by breath, is formed and is coordinated air speed data.
9. the wind speed measurement method according to claim 8 for domestic wind and light complementary type Wind turbines, it is characterised in that The wind speed measurement method for domestic wind and light complementary type Wind turbines also includes herein below:
When the wind speed detection device for domestic wind and light complementary type Wind turbines occurs abnormal, the buzzer and/or The warning lamp group is started working.
10. the wind speed measurement method according to claim 8 for domestic wind and light complementary type Wind turbines, its feature exists In the wind speed measurement method for domestic wind and light complementary type Wind turbines also includes herein below:
When the wind speed detection device for domestic wind and light complementary type Wind turbines occurs abnormal, the transmission process circuit Failure situation is sent into data by telegon to preserve after component preservation, network is uploaded to by the webserver, passes through institute Wind speed enquiry module is stated to point out user.
CN201710055478.8A 2017-01-24 2017-01-24 Wind speed detection device and method for household wind and solar hybrid wind turbine generator Pending CN107064547A (en)

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Application Number Priority Date Filing Date Title
CN201710055478.8A CN107064547A (en) 2017-01-24 2017-01-24 Wind speed detection device and method for household wind and solar hybrid wind turbine generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710055478.8A CN107064547A (en) 2017-01-24 2017-01-24 Wind speed detection device and method for household wind and solar hybrid wind turbine generator

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757342A (en) * 2018-06-04 2018-11-06 南通理工学院 A equipment for fan blade is detected a flaw

Citations (6)

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Publication number Priority date Publication date Assignee Title
US20140163918A1 (en) * 2012-12-07 2014-06-12 Hon Hai Precision Industry Co., Ltd. Fan module test system
CN203798818U (en) * 2014-04-29 2014-08-27 山东交通学院 Wind speed wind direction acquisition device based on single-chip microcomputer
CN203812387U (en) * 2013-12-09 2014-09-03 国家电网公司 Zigbee based wind speed and wind direction monitoring system for electric transmission lines
CN105528883A (en) * 2015-12-09 2016-04-27 华南理工大学 Wind velocity and direction wireless acquisition system and method thereof
CN105590438A (en) * 2015-12-23 2016-05-18 黄国庆 Wireless data collection system based on remote control and data compression
CN206489180U (en) * 2017-01-24 2017-09-12 南通理工学院 Wind speed detection device for household wind and solar hybrid wind turbine generator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140163918A1 (en) * 2012-12-07 2014-06-12 Hon Hai Precision Industry Co., Ltd. Fan module test system
CN203812387U (en) * 2013-12-09 2014-09-03 国家电网公司 Zigbee based wind speed and wind direction monitoring system for electric transmission lines
CN203798818U (en) * 2014-04-29 2014-08-27 山东交通学院 Wind speed wind direction acquisition device based on single-chip microcomputer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108757342A (en) * 2018-06-04 2018-11-06 南通理工学院 A equipment for fan blade is detected a flaw
CN108757342B (en) * 2018-06-04 2023-09-08 南通理工学院 Equipment for detecting flaw of fan blade

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Application publication date: 20170818