9317 results about "Wind direction" patented technology

The present invention is directed to a radio-acoustic sounding system for providing wind measurements at altitudes of 100 meters or less. Wind measurements are obtained by transmitting a pulse of audio frequency energy through one or more volumes corresponding to the coverage area of one or more radio frequency transceivers. The frequency of the audio pulse is selected to have a wavelength that is one-half the wavelength of the electromagnetic energy transmitted by the antenna or antennas. By monitoring a return radio frequency signal at selected times following the transmission of the audio pulse, wind data is obtained at selected altitudes. Wind speed and direction can be obtained by observing the Doppler frequency shift of return radio frequency signals, or by observing the amplitude of the return radio frequency signals. In accordance with an embodiment of the present invention, precipitation measurements may be made by transmitting a radio frequency signal at the same radio frequency as is used in connection with wind measurements, and observing return radio frequency signals.

A method for controlling power output of a wind turbine generator in response to an anticipated change in wind speed is provided. The method includes sensing wind speed at a desired distance from the wind turbine generator in a direction of the wind. The method further includes controlling pitch of a blade of the wind turbine generator based upon sensed transient wind speed in advance of a change in wind speed at the wind turbine generator.

A method for controlling power output of a wind turbine generator in response to an anticipated change in wind speed is provided. The method includes sensing wind speed at a desired distance from the wind turbine generator in a direction of the wind. The method further includes controlling pitch of a blade of the wind turbine generator based upon sensed transient wind speed in advance of a change in wind speed at the wind turbine generator.

A method and mechanism for adjusting / controlling the pitch of at least one blade of a wind turbine relative to a wind direction parallel to a longitudinal main shaft of the wind turbine use a mechanism with a motor for rotating drive wheels in the angle gear around a longitudinal blade shaft via drive wheels of an angle gear. The method and mechanism can stop the complete turning of a main shaft of a wind turbine having a motor to rotate a drive pinion in an angle gear via a drive wheel, the angle gear being meant to pitch at least one blade around a longitudinal axis.

The present invention relates to an adjustable tripod mechanism to support devices / transducers for scientific measurements such as weather station, radio transceiver, acoustic modem, and the like. More particularly, this invention relates to a novel, fully mechanical, and hand-operated tripod stand that incorporates (1) capability for rigidly mounting devices such as instruments, transducers, and so forth on a desired plane at a desired height for measurement of a multiplicity of parameters (e.g., meteorological parameters such as wind speed and direction, solar radiation, air temperature, barometric pressure, humidity, and the like); (2) rotation of any attached / mounted-device / transducer in the azimuthal direction at any angular intervals to facilitate orienting a mounted device in a given direction without the need for rotation of the legs of the tripod; (3) capability for partitioning of the tripod into a multiplicity of desirable smaller segments, thereby enabling its trouble-free transportation to remote areas; (4) trouble-free coupling of a plurality of separate members to achieve the desired height for the tripod stand to suit a given installation environment; (5) improvement in the efficiency of assembly, de-assembly, and packing of the tripod system by rendering its members compact and dismountable; (6) achieving elegance in appearance and ease in mounting; (7) improvement in mechanical stability as a result of an adjustably wider base area; and (8) facility for locking the tripod mechanism to the floor to prevent its translational / angular movement under drag force induced by the prevailing wind.

A wind energy forecasting method with extreme wind speed prediction function cooperated with a central computer, comprising the steps of: inputting a weather data which contains a numerical weather prediction data; implementing a modification with a first model output statistics; implementing a modification with a physical model in accordance with the output of the first model output statistics that can iteratively calculate the results by varying the angles of wind direction; implementing a modification with a second model output statistics; and implementing a prediction of extreme wind speed caused by typhoon, which comprises the following sub-steps of: using a wind and typhoon database to find track data of plural historical typhoons within a certain distance from a target typhoon; using an extreme wind and wind energy prediction tool to calculate at least one extreme wind speed in the future of the target typhoon and calculate the probability of occurring the extreme wind speed; and modifying the extreme wind speed with the physical model to the extreme wind speed at the position or height of a wind turbine.

The present invention discloses systems and methods for the performance enhancement of rotary wing aircraft through reduced torque, noise and vibration. In one embodiment, a system includes a sail having an aerodynamic shape positioned proximate to a tip of the rotor blade. An actuator may be configured to rotate the sail relative to the blade tip. a A control system receives information from a rotorcraft system and commands the actuator to rotate the sail to a predetermined favorable rotor blade operating condition. In another embodiment, a method includes configuring the rotorcraft in a selected flight condition, communicating input signals to a control system operable to position sails coupled to tips of blades of a rotor assembly, processing the input signals according to a constraint condition to generate sail positional information, and transferring the sail positional information to the sail.

A wind power generation evaluation system includes: a laser aerovane that measures, with a laser, the direction and velocity of wind at a distance from a wind power generator' connected to an electric power system, to predict the direction and velocity of wind at the wind power generator; a second aerovane that measures the wind velocity and direction at the wind power generator; a wind power generation output calculation unit that integrates difference between power outputs calculated based on measurements by the laser aerovane and by the second aerovane, while referring to a windmill performance curve indicating output power characteristics of the wind power generator with respect to wind velocity, to produce a difference between the amounts of generated power; and an additional value calculation unit that calculates additional value of an influence on the environment based on the difference between the amounts of generated power produced by the calculation unit.

Systems and methods are described for creating low cost energy using kites connected to ground mounted equipment. In power mode the kites generate maximum energy by positioning the kite at a high angle of attack relative to wind direction. The kite is allowed to travel a distance limited only by the length of line attached. The opposite end of the line is attached to a reel capable of turning a shaft to create mechanical or electrical energy. Upon reaching a controlled length, the kite is repositioned to a minimum angle of attack relative to the wind to minimize energy required to retrieve the kite. The shaft rotation is then reversed thereby winding the line on the reel. Energy is expended in retrieval mode. The difference in energy during power and retrieval mode is the net energy gain available for useful work.

An apparatus and a method used to determine the speed and direction of the wind experienced by a wind turbine are provided. The apparatus comprises at least one sensor fixed to the rotor of the wind turbine, an angular sensor to measure the angular position of the rotor of the wind turbine, and a circuit which converts the relationship between the output of the at least one sensor and the output of the angular sensor into the speed and direction of the wind experienced by the wind turbine. According to the invention, the sensing apparatus can measure the wind speed and direction in three dimensions. In addition, mounting the sensors directly to the rotor of the wind turbine results in a very simple and robust installation. Mounting the sensors directly to the rotor also eliminates the turbulence from the rotor and the nacelle of the wind turbine from affecting the sensors.

The invention discloses an environment control plant factory through seal-typed artificial light, which comprises the following parts: fender structure, air circulating system, temperature adjusting system, moisture adjusting system, CO2 supplying system, light supplying system, control system based on inserted network technique and automatic power-metering system, wherein the systems are seal, heat-proof and light-tight, which provides clean and fitful growing environment for plant. The invention saves cost and energy consumption, which realizes normalized and standardized cultivating management and planning manufacturing.

The invention relates to an air conditioner and a controlling method thereof. The air conditioner determines movement of indoor person through a camera device of the air conditioner, and calculates corresponding movement quantity and body metabolism quantity to change running setting of temperature, wind direction and wind speed, thereby realizing optimum control, increasing efficiency, providing more comfortable environment for indoor person and having effect of improving satisfaction. Especially, the air conditioner detects state of indoor person through tridimensional image or heat imaging image according to indoor temperature distribution shot by a camera component, and executes corresponding air-conditioning operation according to body state of indoor person, to execute corresponding air-conditioning operation according to the body state of indoor person, thereby having advantage of providing comfortable environment suitable for current state of indoor person.

The invention relates to a comprehensive measuring and controlling device of a high voltage pole tower, mainly comprising a power supply unit, an intelligent bird driving unit, a flashover and lightning stroke location detection unit, a pole tower inclination detection unit, a pole tower meteorological environment detection unit, a pole tower intrusion alarm unit, an transmission line icing parameter detection unit, a central controller, a wireless transceiving device and a thermostat, wherein the power supply unit comprises two parts which are a solar battery and a wind turbine, the wind turbine also fulfills the functions of wind speed and wind direction detection and is an important component part of the pole tower meteorological environment detection unit, the power supply unit stores collected electric quantity into a storage battery through a collection circuit and supplies the power to the device, and the wireless transceiving device sends information collected in situ to a distant monitor center through a GPRS (General Packet Radio Service) or a wireless local network. The invention can fulfill the functions of intelligent bird driving, flashover and lightning stroke location, pole tower inclination detection, meteorological environment detection, intrusion alarm, icing parameter detection and the like and has strong environment adaptability because the wind power and the solar power generation accord with the environment self-powered requirement, thereby enhancing the maintenance free performance of a system. The device is an important component part of an intelligent power grid, accords with the requirement of intelligent power grid establishment of a national power grid and has higher practical value and wide application prospect.

To provide a wind turbine generator, a wind turbine generator system, and a power-generation control method of a wind turbine generator that are capable of improving the power-generation capability and reducing the fatigue load on the windmill. A data accumulation unit 25 sequentially accumulates data sets of a generated output power P during operation of the wind turbine generator, an incoming wind speed Ws estimated on the basis of a wind speed measured at the anemometer, and a wind direction deviation, which is the difference between a wind direction θw measured at the anemoscope and the orientation of the nacelle; statistical analysis of the data accumulated is carried out by an analyzing unit 26; a distribution curve corresponding to the wind direction deviation of the generated output power at each incoming wind speed is determined; the wind direction deviation corresponding to the peak of the distribution curve is set as a correction value θd of the anemoscope; the correction value of the anemoscope for each incoming wind speed is stored in the wind-direction correction table 27; the wind direction Vw measured at the anemoscope is corrected with the correction value θd of the anemoscope for each incoming wind speed Ws; and power-generation control is carried out using the corrected wind direction as a control parameter.

The invention provides an ultra-short term wind power station generated power forecasting system, which belongs to the technical field of automatic scheduling of wind power plants. The system comprises a real-time wind measurement data server, a numerical weather prediction server, a wind power station real-time operation server, an ultra-short term forecasting processing server and data acquiring equipment, wherein the numerical weather prediction server is used for acquiring weather prediction data of a near-earth layer at the position of a wind power station; the real-time wind measurementdata server is used for acquiring wind speed data, wind direction data, temperature data, air pressure data and humidity data at the position of a wind measurement tower; the wind power station real-time operation data server is used for acquiring the total generated power data of the wind power station; and the ultra-short term forecasting processing server is used for forecasting the total generated power data of the wind power station at the next moment. The system solves the technical problems that future generated power variation tendency cannot be tracked and multi-step forecasting accuracy is relatively low in the prior art.

A connection wire is connected to a part of a rear door popped up in a door-opening direction by an urging force. A pulley rotates responsive to a driving motor inside a wire-winding device to wind the connection wire thereon. In this manner, the rear door is automatically closed. The pulley is urged in a connection wire-winding direction by a power spring. A clutch is between the pulley and the driving motor. When the rear door is pressed by an operator's hands in a door-closing direction while the rear door is being closed, the pulley is rotated by the power spring, thus winding the connection wire thereon and preventing the connection wire from becoming loose. At this time, the connection between the pulley and the driving motor is cut off by the clutch. Thus, the pulley is rotated by the power spring freely and rapidly. In this manner, the rear door can be closed manually even while it is being closed automatically. Further, the connection wire can be prevented from becoming loose and from being sandwiched between the body of the vehicle and the periphery of a rear opening thereof.

A wind energy systems includes a shroud for each turbine. The shroud is adapted to direct and accelerate wind towards the turbine. A strong adaptable support assembly is provided for securing turbines to a structure. An air glide yaw assembly facilitates rotational movement of the structure allowing the turbines to face oncoming wind. The turbine blades are optimized for use with a shroud.

A method for reducing peak loads of wind turbines in a changing wind environment includes measuring or estimating an instantaneous wind speed and direction at the wind turbine and determining a yaw error of the wind turbine relative to the measured instantaneous wind direction. The method further includes comparing the yaw error to a yaw error trigger that has different values at different wind speeds and shutting down the wind turbine when the yaw error exceeds the yaw error trigger corresponding to the measured or estimated instantaneous wind speed.

A complete fully-automated airborne wind energy generation system with three major components; a ground-based energy trailer anchored to the ground containing a reel, motor / generator, motor controller with regenerative braking, a low-friction capstan, and a microcontroller; an ‘aerie’ elevated launch and landing platform free to weathervane in the wind, with a tether flag deployment and collection device; a statically and dynamically stable rotor-glider with variable pitch rotor blades enabling jump-launch, on-board weather and load sensors, microcontroller, and cell or satellite phone data connections to a centralized database; and a high-strength low-weight tether connecting all the components together.

The invention discloses a comprehensive monitoring and early warning system based on meteorology and a power grid GIS and a method thereof. The system comprises a data layer and an application layer. The data layer consists of a meteorological database, a power grid GIS database, and a production and operation database. The application layer includes a meteorological monitoring module, a meteorological early warning module, a power grid weather module, an information display module, and an auxiliary decision-making module. The meteorological database, the power grid GIS database, and the production and operation database carry out communication mutually; and the meteorological monitoring module, the meteorological early warning module, the power grid weather module, the information display module, and the auxiliary decision-making module carry out communication with the meteorological database, the power grid GIS database, and the production and operation database respectively. According to the invention, meteorological monitoring information like the temperature, wind direction, and wind speed and the like of important power equipment like a transformer substation, a transmission and transformation line, and a tower can be gotten in real time; and visual meteorological real-time data can be provided for the power grid. Meanwhile, prediction and disaster early warning information of the typhoon and thunder and the like can be provided every 12 hours in the next seven days.

The invention discloses unmanned plane equipment for detecting a gas pollution source. The unmanned plane equipment comprises a ground monitoring module used for performing real-time acquisition of gas pollution concentration, position, wind direction, and wind speed and early warning of a monitoring point; a ground control module used for determining an initial flight parameter of an unmanned plane module and receiving real-time monitoring data of the unmanned plane module; the unmanned plane module is used for adaptively controlling detection of a flight path in a to-be-measured pollution area, and positioning a pollution source collecting the data; and a wireless transmission system used for realizing data transmission among the ground monitoring module, the ground control module, and the unmanned plane module. The unmanned plane equipment can timely find the diffusion of polluted gas, performs primary detection on direction of the pollution source according to a gaussian plume model theory of gas diffusion, and accurately locks the pollution source through accurate positioning; the concrete condition of the discharge position of the gas pollution source can be checked through an aerial device, and a complete intelligent monitoring process is formed, so that the pollution source can be timely found by the relative staff.

A yawing system for a wind turbine, the wind turbine comprising a tower fixed to the ground and a frame (1) housing an electric power generator, the tower and the frame (1) being joined by the yawing system which allows the orientation of the frame (1) with respect to the tower according to the direction of the wind. The yawing system comprises: a gear ring (2) fixed to the tower, the gear ring having a sliding track (3) on which the frame (1) rests and slides in its yawing movement, at least one geared motor fixed to the frame (1), meshed with the gear ring (2) through a gear wheel, at least one active braking module (5), and at least one passive braking module (6). The invention further comprises a sliding track (3) and a friction track on the gear ring, this friction track (10) being different from the sliding track (3), and the active braking modules (5) and passive braking modules (6) comprising a friction plate (11) acting on the friction track (10) of the ring. The frame (1) rests on the gear ring (2) by means of horizontal plates (8) and radial plates (9) made of a sliding material, and are kept in their position by separating parts (7). Furthermore, the gear ring (2) is divided into gear-toothed circular segments to favor its repair. Other aspects are a wind turbine with the previous yawing system and a yawing process of a turbine by means of the previous yawing system.

Method and apparatus for remotely controlling a fire protection system for buildings. This method of fire protection uses a wireless or wired control system to remotely activate a fire protection system by sending it an activation signal or activation message wherein one or more commands can configure the system with specified operation instructions. The system utilizes roof top sprinklers and may additionally utilize existing irrigation systems or additional zones only used during the prevention of wildfires to wet down area in advance of fires. The system can be controlled by various municipal fire authorities that are given the authority to control fires. Immediate control of the system is always available to the transmitting authority. When activated, the central processor communicates to the authority that activated the fire protection system. The central processor transmits information back to the transmitting authority such as but not limited to water flow confirmation, water pressure, air temperature, roof temperature, wind direction, humidity and still or live images of the protected property.

The invention discloses a control method for the automatic sleep mode of an air conditioner. A temperature sensor, a human body sensing sensor and a light intensity sensor are adopted. When an air conditioner begins to operate, the method comprises the following control steps in sequence: judging whether the air conditioner operates in a comfortable mode or not; if yes, starting the human body sensing sensor and the light intensity sensor to detect human body activity level and illumination intensity; judging whether the current indoor temperature value is stable and invariant or not; if yes, judging whether the human body activity level and the illumination intensity satisfy the preset condition or not; if yes, entering an automatic sleep mode, and implementing temperature compensation and wind direction control; when a button on a remote controller or an air conditioner is operated, exiting the automatic sleep mode. The control method disclosed by the invention has the advantages of regulating the temperature compensation amount and changing wind direction according to the detection result so as to improve sleeping comfort, is flexible in design and conforms to user custom and requirements.

A rolling screen comprises a screen case, a take-up shaft arranged rotatably about a central axis thereof within the screen case, and a screen wound on said take-up shaft so that the screen can be wound out of said screen case. The take-up shaft is normally biased in a screen-winding direction by a torsion spring. An outer peripheral surface of the screen wound on the take-up shaft is always maintained in contact with an inner wall of the screen case, said inner wall being located in a direction of winding-out of the screen, by pulling force applied to the screen upon extension of the screen or resilient force of a pressing spring when the screen is wound out or wound in.

The invention provides an air-conditioner control terminal which can perform various settings, such as wind direction, wind speed, and the like of an air-conditioner, through simple and visualized operations. The air-conditioner control terminal (10) comprises: a storage part which stores setting information to an air-conditioner body including wind direction and wind speed; a control part which displays an operation object image representing wind blown out from a unit (117) of the air-conditioner body, that is, wind blowing (118), on a touch screen part (11), and stores the setting information that includes wind direction and wind speed and is changed by the operation of touching and moving of the operation object image in the storage part; and a communication part which sends the changed setting information to the air-conditioner body.

A cuff for a blood pressure monitor has an air bag inflated / deflated as the air comes in / out. The air bag has an inner wall portion located on the inner side in the fitted state of the cuff and an outer wall portion located outer than the inner wall portion, and a side wall portion connecting side end portions of the inner and outer wall portions and folded inwards in the deflated state of the air bag to form a gusset at each side end portion of the air bag. A bonded portion is provided at a region of the air bag in its winding direction around the living body, for reducing expansion of the gusset formed by the side wall portion. Thus, occurrence of lateral displacement of the cuff is prevented, and a highly reliable blood pressure monitor of high performance can be obtained.

A vertical axis sail-type wind turbine includes an array of sail-like structures that are mounted on rotating main masts. The sail-like structures can be oriented to interact with the wind. For example, when the sail-like structures are moving in a downwind direction, they are oriented to present a flat surface that is perpendicular to the wind direction. On the other hand, when the sail-like structures are moving in an upwind direction, they are oriented to present a surface that is at an angle that creates an upwind vector. The sail-like structures rotate about the sail masts, which are mounted to transverse mounting arms that are firmly mounted to a main mast. The main mast rotates, transferring power through a gear and shaft drive to hydraulic pumps in the tower. This hydraulic fluid pressure is then used to drive an electrical generator.