130 results about "Wind sensor" patented technology

The invention relates to the technical field of photovoltaic support reinforcement, and discloses a wind-resistant adjustable photovoltaic support reinforcement device, which comprises two groups of construction base frames, uniformly distributed photovoltaic modules are arranged between the two groups of construction base frames, the construction base frames are obliquely arranged, first inhaul cables are arranged on the lower sides of the photovoltaic modules, and second inhaul cables are arranged on the lower sides of the first inhaul cables. The photovoltaic module is slidably mounted on the first inhaul cable, a reinforcing and adjusting mechanism is fixedly mounted on the side face, away from the photovoltaic module, of the set-up base frame, the reinforcing and adjusting mechanism is connected with one end of the first inhaul cable, and evenly-distributed inhaul cable guiding parts are arranged on the photovoltaic module. The external wind power intensity is detected through the external wind power sensor, the distance between the movable supporting plate and the fixed supporting plate is controlled through the external wind power intensity, then the tensile force between the first inhaul cable and the tensile force between the second inhaul cable can be adjusted according to the external wind power intensity, and then the tensile force between the first inhaul cable and the second inhaul cable can be adjusted according to the external wind power intensity. And the reinforcing strength of the photovoltaic bracket is adjusted.

Techniques for determining environmental data of an environment associated with a vehicle are discussed herein. The vehicle can use the data to determine a vehicle configuration data, a trajectory for the vehicle to traverse, a route to a destination, or orientation for ingress / egress. The vehicle can determine control data based on the vehicle configuration data, the trajectory, or the route. The vehicle configuration data may be associated with a setting of a suspension component, a speed, or other component. The trajectory may be biased based on a source of the wind. The route may be selected from a first candidate route and a second candidate route using a first wind score associated with the first candidate route and a second score associated with the second candidate route. The vehicle can use a sensor, such as a wind sensor, to capture or otherwise determine the wind data.

The invention discloses a multi-sensor fusion meteorological data comprehensive analysis platform, and relates to the technical field of meteorological monitoring. The platform comprises a three-level sensing layer, a dynamic collaborative architecture and a meteorological data analysis layer. The third-level sensing layer works cooperatively through a ground total-factor meteorological station, an unmanned aerial vehicle cluster and a FY-4 satellite and is integrated with a bimodal ultrasonic wind measurement sensor, a miniature meteorological sounding cabin and an HRIT / LRIT data receiving module, so that multi-dimensional data acquisition from the ground to a 5km high altitude is realized; the dynamic collaborative architecture is based on an edge computing node and a cloud fusion module, adopts a lightweight LSTM (Long Short Term Memory) model to detect abnormity in real time, and dynamically optimizes the weight of multi-source data through Kalman filtering; and the meteorological data analysis layer is combined with the element coincidence index, the layering stability index and the risk assessment model to generate a graded early warning signal. According to the scheme, the problems of vertical data fault, low multi-source data fusion efficiency, early warning lag and the like in the traditional technology are solved, and the severe convective weather prediction precision is remarkably improved.

A mobile solar generator can include a housing, wheels and outriggers coupled to the housing, a solar array including solar panel(s), a user interface, and a controller in communication with the user interface. The mobile solar generator can include a sensor tower supporting wind sensor. The outriggers, solar array, and / or weather tower can be configured to be stored and / or deployed. The solar array orientation can be adjusted to track the position of the sun, for example, based on a determined facing direction of the mobile solar generator. The solar array can be configured to enter into a safe-mode configuration in response to certain weather conditions such as high winds. The mobile solar generator can generate electrical energy and include one or more batteries and / or a nonrenewable energy source. A controller can control various functions of the mobile solar generator.

Described are systems and methods for active weathervaning of a hybrid flight aerial vehicle, such as an unmanned aerial vehicle (UAV). Active weathervaning of the hybrid flight aerial vehicle during can be provided during vertical takeoff and landing (VTOL) / hover flight without the assistance of any low-speed wind sensors and during transitions between VTOL / hover flight and fixed-wing, wing-borne, horizontal flight. Additionally, active weathervaning can be provided during propulsion mechanism failure conditions where the aerial vehicle may be experiencing failure conditions associated with one or more propulsion mechanisms.

The present invention is generally directed to methods, systems and devices for communication of information related to emergency situations. In one aspect, the present invention provides a system for communication of information related to emergency situations. The system comprises a first printed circuit board, a second printed circuit board and a third printed circuit board. The first printed circuit board, the second printed circuit board and the third printed circuit board plug into each other to form a communication relay. The first printed circuit board is a communication platform comprising GPS, Cellular, a CO2 sensor, an Air Temp sensor and LoraWan. The second printed circuit board is a weather station comprising humidity and barometric pressure sensors. The third printed circuit board is a wind sensor comprising ultrasonic wind sensors.

The invention relates to the technical field of photovoltaic module supporting structures, in particular to a supporting and connecting structure of an energy-saving photovoltaic module for building construction. Comprising a supporting shell and a photovoltaic panel in a storage groove in the front side of the supporting shell. The upper edge of the photovoltaic panel is hinged to the upper position of the storage groove; a first movable groove is formed in the lower position of the bottom of the storage groove; the first movable groove penetrates left and right and is rotationally connected with a screw with opposite threads at the two ends. The left end of the screw rod is fixedly connected with a knob; the two ends of the screw rod are in threaded transmission connection with the movable seat; the movable seat is connected into the first movable groove in a sliding manner; the photovoltaic panel is pushed by wind power to overcome the locking force on the locking block so that the photovoltaic panel can actively retract into the storage groove, so that the photovoltaic panel is protected in strong wind weather, compared with folding by using a wind power sensor, the service life is longer, the stability is higher, and due to the fact that the wind power directly acts on the photovoltaic panel, the photovoltaic panel is not damaged. And the photovoltaic panel can be folded more timely, and the sensitivity is higher.

The utility model belongs to the technical field of sun shading, and particularly relates to an electric outdoor sun shield which comprises two stand columns. The two stand columns are symmetrically arranged. A plurality of fixing shafts are arranged in the middle of the stand column. The multiple fixing shafts penetrate through the stand column. Blades are arranged in the middles of every two fixed shafts; end cover plates are arranged at the two ends of each blade, the blades can be controlled by being matched with an intelligent control system such as wind sensing equipment, rain sensing equipment and light sensing equipment, so that sunlight irradiation or blocking is achieved, meanwhile, the connecting rods are made of stainless steel materials, the strength is high, the surface is attractive, and the connecting rods are core components for transmission of the movable sun visor and are convenient to use. The movable sun shield is driven by a double-push-rod motor, torsion in the system is effectively balanced, the overall strength of the system is enhanced, reliable work of all the blades is guaranteed due to the excellent performance of the movable sun shield, and the safety of the system is guaranteed even in a severe climatic environment.

The invention belongs to the technical field of additive manufacturing equipment manufacturing, and particularly relates to a wind field detection device for additive manufacturing equipment, which comprises a transverse moving part, and a guide part is arranged on the left side of the transverse moving part; a wind power detection component is arranged at the top of the movable base; the movable base comprises a bearing chassis, and a girdling groove is formed in the lower surface of the bearing chassis. The wind sensor is driven to perform free plane sliding motion in the wind power detection equipment through the transverse moving part, the guiding part and the moving base, so that wind power at different point positions is tested, and in the wind power testing process, the moving base can be tightly attracted to the upper surface of the long sliding rail through the magnetic force of the built-in magnetic ring, so that the wind power detection equipment is more convenient to use. A reinforcing effect is achieved on the moving roller which freely slides, so that the problem that the wheel body at the bottom of the equipment is easy to slip, even shift or topple under the action of wind power when the wind power of a tested wind field is relatively large is avoided.

The present invention relates to a typhoon-proof billboard, comprising a main frame and a billboard cavity, wherein a transmission cavity is provided inside the lower end of the main frame, and a secondary gear is installed inside the transmission cavity, and a billboard cavity is provided in the middle of the main frame. The beneficial effects of the present invention are as follows: the typhoon-proof billboard is provided with a wind sensor, a solar photovoltaic panel, a battery and a motor, and the wind force can be detected by the NZ-FS wind sensor provided in the device. When the wind force exceeds the specification, the information is transmitted to the system main controller, and then the control motor is turned on, and the operation of the motor drives the main gear connected to the lower end of the second rotating shaft to operate, thereby rotating the secondary gear meshing with the main gear, and finally driving the billboard body connected to the first rotating shaft to rotate 90°, so that when the wind force is too strong, air can pass through the gap after rotation, preventing the billboard from being overturned and damaged due to excessive force, and at the same time, the energy for the operation of the storage device is stored through the solar photovoltaic panel and the battery in daily life.

The invention relates to an electric aircraft high-temperature auxiliary cooling device and method and an electric aircraft. The first end of the main air passage is communicated with a to-be-cooled heat exchange target of the electric aircraft; the second end of the main air channel communicates with the first air inlet channel and the second air inlet channel. A gas outlet of the high-pressure low-temperature gas storage device communicates with the main gas channel through a second gas inlet channel, and the high-pressure low-temperature gas storage device is configured to release low-temperature gas with the temperature lower than the preset temperature value and make contact with an electric aircraft heat exchange target through the main gas channel. The radiator air inlet sensor is arranged at any one of the first end and the first air inlet channel and connected with the high-pressure low-temperature gas storage device. The cooling performance of the heat exchange target of the electric aircraft is ensured, and the heat management performance of a power system is always in a good state; a compressor refrigerating unit which is complex in structure, large in size and heavy in weight does not need to be adopted, and airflow entering the cooling system can be always in a low-temperature state only by matching the high-pressure low-temperature gas storage device with a pipeline.

The invention relates to the technical field of electric power inspection, and discloses an intelligent electric power equipment inspection device which comprises a robot body and four moving wheels installed below the robot body, the outer wall of the upper surface of the robot body is fixedly connected with a wind power sensor, and the outer wall of the front end of the robot body is fixedly connected with an impact plate. A motor cavity, two transmission cavities, a moving cavity and two inclined openings which communicate with one another are formed in the robot body, openings of the two inclined openings are located in the two sides of the impact plate, a power mechanism is connected to the inner wall of the motor cavity, the output end of the power mechanism is connected with a transmission assembly and a moving assembly, and the transmission assembly is located in the two transmission cavities; the moving assembly is located in the moving cavity. According to the intelligent electrical equipment inspection device, the power mechanism, the transmission assembly and the gravity center adjusting assembly are arranged in the robot body, so that the gravity center can be changed in the inspection period of the robot body, the wind resistance of the device is improved, and the probability of being blown down or even damaged is reduced.

The present invention discloses a method and system for collecting wind speed and direction for railways based on ultrasonic waves, and relates to the field related to wind speed and direction measurement technology. The method comprises: reading the basic assembly information of the ultrasonic wind sensor of the target railway; receiving the wind power collection instruction and activating the temperature sensor to determine the real-time temperature data; if the real-time temperature does not meet the temperature threshold, generating a preheating instruction and driving the heating device to heat; driving the piezoelectric ceramic to control the reception and transmission of ultrasonic waves and determine the reception and transmission of ultrasonic waves; combining the signal processing module to perform hierarchical difference determination and calibration; extracting the signal characteristics and performing the time difference method calculation to determine the railway wind data. The method solves the technical problems that the heating reliability of the ultrasonic wind sensor in the complex railway environment is insufficient, the ultrasonic signal is easily interfered, and the railway wind force measurement result is not accurate enough.

This invention relates to the field of traffic engineering construction safety technology, specifically a safety early warning device for use at traffic engineering construction sites. The device includes a cabinet and a hydraulic lifting vehicle detachably connected to the bottom of the cabinet. A transmission mechanism is installed on the rear wall of the cabinet. The hydraulic lifting vehicle enables overall movement and height adjustment. In conjunction with the bevel gear meshing of the transmission mechanism, it drives the camera and wind sensor to flexibly adjust the monitoring angle, eliminating blind spots and replacing manual inspections for 24 / 7 active monitoring. The cabinet integrates control, power supply, and communication modules, electrically linking with sensing and early warning components to achieve real-time data analysis, audible and visual alarms, and synchronized early warning on the display screen. This solves the problems of individual devices not working together and information transmission delays, forming a closed-loop process of hazard monitoring, early warning, and response.

The present application discloses a cable attachment recognition device based on infrared imaging technology and a heat dissipation model, and the present application belongs to the field of Internet of Things technology. It includes: an infrared image collector for acquiring infrared images of the cable; a wind sensor for acquiring wind direction data and wind speed data in the environment; a temperature sensor for acquiring environmental temperature information; a processing unit for inputting the infrared images of the cable, the environmental temperature information, the wind direction data and the wind speed data into a pre-constructed heat dissipation model to obtain the output result of the heat dissipation model; and determining whether the attachment recognition condition is satisfied according to the output result; if satisfied, it is determined that there are attachments on the cable. According to this technical solution, it is possible to judge whether there is an attachment phenomenon on the cable under certain conditions based on the data collected by the sensors, so that targeted attachment observation arrangements can be made, improving the monitoring efficiency of cable attachments and ensuring the operation safety of the cable.

The present invention provides a true wind fusion algorithm based on platform attitude correction and an unmanned sailboat control system. The algorithm converts the coordinate system of the ship-borne wind sensor into the earth coordinate system, performs filtering processing on the relative wind speed, relative wind direction, ship speed wind speed, and ship speed wind direction, and uses the filtered data to perform true wind speed fusion processing. The relative wind is corrected to the state when the sailboat is in a horizontal attitude by using the idea of ​​rotating coordinate conversion. Compared with other wind speed and wind direction compensation algorithms, the present invention does not rely on sensors or other hardware adjustments, making the unmanned sailboat sail control system simpler and more convenient.

An innovative foldable self-supporting retractable awning system has been developed to address the limitations of traditional fixed and mounted awning designs. The key features include a versatile, column-like structure that can transition between a compact closed state and a fully deployed shading configuration without requiring permanent wall or structural attachments. The system consists of a retractable awning, a mechanical structure with a movable rod and arm assembly, and an electronic control system. This allows the awning to be positioned as needed to provide shading for vehicles, outdoor seating areas, and other spaces. The design incorporates safety features like wind sensors and obstacle detection to automatically adjust the awning based on environmental conditions. This novel approach offers increased flexibility and convenience compared to conventional awning solutions, making it well-suited for a wide range of residential and commercial applications.

The utility model relates to the technical field of temperature and pressure wind sensors, and especially relates to a temperature and pressure wind sensor protective housing used in a desert environment. According to the technical scheme, the device comprises a shell and a plurality of sensing holes formed in the shell, and further comprises a filter cover fixedly installed on the shell and used for blocking the sensing holes; and a multi-stage filtering mechanism. Through cooperation of the filter cover, the multi-stage filter mechanism, the storage mechanism, the vibration mechanism and the like, solid particles such as sand and dust can be effectively prevented from entering the sensing hole of the sensor through multi-stage filtration, it is ensured that the sensing hole is kept smooth for a long time, and high efficiency of the sensor is maintained. And entering particles can be effectively intercepted, damage of the particles to internal elements of the sensor is reduced, and the service life of the sensor is prolonged. In addition, sand grains are automatically collected after being driven by wind power, filtering holes can be continuously kept unobstructed, hole channel blockage caused by sand grain accumulation is avoided, and therefore unsmooth circulation or equipment faults caused by blockage are avoided.

The utility model provides an offshore wind turbine generator lightning protection wind measuring device which comprises a wind indicator, an anemograph, an ultrasonic wind measuring sensor and at least two sets of supporting frames, the supporting frames are used for being connected with a connecting body on a cabin cover, the supporting frames are connected through a connecting frame, one set of supporting frame is provided with the wind indicator, and the other set of supporting frame is provided with the ultrasonic wind measuring sensor. One group of supporting frames is provided with an ultrasonic wind measuring sensor, the upper end of each supporting frame is provided with a lightning rod, the lightning rods are arranged in an inclined mode, and the highest point of each lightning rod is higher than the highest point of the corresponding wind indicator or anemograph. The device is used for wind measurement of an offshore wind turbine generator, and effectively enlarges the protection range of the lightning rod.

The invention discloses a gradient segmented flag wind sensor with a self-powered warning function. The gradient segmented flag wind sensor comprises a first sensing structure and a second sensing structure which are oppositely arranged, the first sensing structure comprises a substrate film I (1) and an electrode film I (2) which are stacked and pasted; wherein the substrate film I (1) has different thicknesses in the horizontal direction; the second sensing structure comprises a friction layer film (3), an electrode film II (4) and a substrate film II (5) which are sequentially stacked and adhered; wherein the friction layer film is opposite to the electrode film I (2) of the first sensing structure; and the substrate film II (5) has different thicknesses in the horizontal direction. According to the invention, high-precision wind speed sensing can be realized under conventional conditions, and a self-powered illumination early warning mechanism can be automatically triggered for wind power of level 5 and above under abnormal conditions such as sudden power failure.

The invention discloses a wind power acoustic radar wind measurement device for a wind power plant, and particularly relates to the technical field of radar wind measurement, the wind power acoustic radar wind measurement device comprises a mounting shell, an inclined sleeve strip is rotatably mounted on the inner wall of the mounting shell, a self-recovery assembly is arranged at the top end of the inclined sleeve strip, and the self-recovery assembly comprises a rotating shaft which is fixedly connected to the top end of the inclined sleeve strip, and a groove column is rotatably mounted on the outer wall of the rotating shaft; a gear motor is mounted on one side of the groove column; the supporting block is fixedly connected to the upper surface of the gear motor, and the supporting block is fixedly connected with the groove column; the main radar sensor is fixedly connected to the bottom end of the inclined sleeve strip. According to the invention, the self-recovery assembly is adopted, and the method has the advantages that the abnormal main radar sensor can be recovered to the normal use state while the wind measurement of the auxiliary radar sensor is ensured, so that the problem that the abnormal sound wave radar wind measurement sensor can be recovered to the normal use state while the wind measurement of the sound wave radar is difficult to ensure is solved.

1. The name of the product of this design: popular science device of wind direction sensor. 2. Purpose of this design product: for the popularization of scientific knowledge of wind vane wind direction sensors. 3. The design key point of this appearance design product lies in the three-dimensional image. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses an anti-freezing modularized wind measurement sensor, which comprises a base, and is characterized in that the base is provided with a wind speed sensor and a wind direction sensor; the wind speed sensor comprises a shell and a wind cup rotating disc, a wind cup rotating disc rotating shaft is rotationally arranged in the shell, the wind cup rotating disc is formed by splicing an upper layer and a lower layer, a rotating disc heating film is clamped between the upper layer and the lower layer, an arc-shaped arm is connected to the wind cup rotating disc, a wind cup heating piece is embedded in the arc-shaped arm, and wind cups are connected with the arc-shaped arm. The wind direction sensor comprises a first shell and a wind indicator rotating disc, a wind indicator rotating disc rotating shaft is arranged in the first shell, the wind indicator rotating disc is connected with the wind indicator rotating disc rotating shaft, a wind indicator and a wind indicator pointer are connected to the wind indicator rotating disc, and heating films are clamped between the upper layer and the lower layer of the wind indicator rotating disc and the upper layer and the lower layer of the wind indicator pointer. According to the device, the rotating mechanical part can be heated, and wind speed and wind direction measurement errors or measurement failure caused by freezing of the mechanical part are avoided.

The present application discloses a device for identifying cable attachments according to a vibration model, and the present application belongs to the technical field of the Internet of Things. It includes: a vibration sensor for acquiring vibration data of a cable at a cable support; a wind sensor for acquiring wind direction data and wind speed data in the environment; a temperature sensor for acquiring temperature information in the environment; constructing a vibration model according to the wind direction data, wind speed data and temperature information, and inputting the vibration data into the vibration model; and determining whether the attachment identification condition is satisfied according to the output result of the vibration model; if so, it is determined that there are attachments on the cable. According to this technical solution, it is possible to judge whether there is an icing phenomenon on the cable under certain conditions based on the data collected by the vibration sensor, so that targeted icing observation arrangements can be made, and the operation safety of the cable can be improved.

The invention discloses a wind-resistant reinforced solar photovoltaic support, and belongs to the technical field of photovoltaic supports, the wind-resistant reinforced solar photovoltaic support comprises a base, a lateral supporting plate is fixedly mounted in the middle of the upper end of the base, the side edge of the lateral supporting plate is connected with the base through an inclined supporting rod, and a wind power sensor is fixedly mounted at the upper end of the lateral supporting plate; the wind power sensor is electrically connected with the servo motor, the output end of the servo motor is fixedly connected with a guide screw rod, the guide screw rod is installed in the middle of a movable tooth frame in a penetrating mode, an edge clamping block of the movable tooth frame is located in a guide groove formed in the lateral supporting plate, and a transmission gear is arranged on the inner side of the movable tooth frame; and the transmission gear is in key connection with a middle rotating shaft of the connecting frame. According to the wind-resistant reinforced solar photovoltaic support, when the wind-resistant reinforced solar photovoltaic support is used, power can be provided through outdoor wind power to achieve automatic cleaning of impurities attached to the surface of a photovoltaic panel, and meanwhile in sunny days, shaking off of dust and the impurities attached to cleaning components is achieved.

The invention relates to the field of intelligent protection, in particular to an intelligent window control device and method for coping with typhoons. Comprising vertical guide rail structures arranged on walls of two vertical frames of a window and a roller shutter structure connected with the vertical guide rail structures, and an ultrasonic wind power sensor is installed on the wall of any side of the two vertical frames of the window; installing an ultrasonic wind power sensor, connecting the roller shutter structure with a control system, and selecting a driving module; when the wind speed exceeds the threshold value, the control system automatically controls the roller shutter structure to be closed; and cloud data debugging: when the ultrasonic wind power sensor senses wind power, data is transmitted to a cloud data processing center of the Internet through a base station, a result is fed back to a control terminal, and a user makes a choice or automatically activates the intelligent protection device. The wind power can be detected in time, and starting and stopping of the protection device can be remotely operated in time through the control terminal; when the window is of a common manual structure, the roller shutter structure achieves the function of closing the window in time.

This invention discloses a portable on-site calibration device and method for wind sensors. The calibration device includes an execution unit, which, from bottom to top, comprises a base, a stepper motor gear compartment, and a ring angle encoder. A fixing bracket is provided on the side of the gear compartment. A wind speed generating unit includes a horizontally continuous chamber with an air outlet at the rear end. Inside the chamber, a fan module and a honeycomb panel are arranged sequentially along the wind speed direction. The honeycomb panel has uniformly arranged, closely spaced horizontal through holes with an equivalent diameter of 4-8 mm. This invention's wind speed generating unit uses only a combination of a fan module and a honeycomb panel to output a low-speed, uniform wind field. It is compact, low-cost, and has a fully open structure. Combined with an angle scale, angle stop bar, and electromagnet, it can automatically complete the wind direction sensor calibration process.

The utility model provides a perfuming machine, the perfuming machine includes main part and wind sensor, the main part includes shell and set in the essential oil bottle, atomization subassembly and first control unit in the shell, atomization subassembly is used for atomizing the liquid in the essential oil bottle, and the first control unit is used for controlling the essential oil bottle. The first control unit is electrically connected with the atomization assembly and the wind sensor, the wind sensor is arranged outside the main body and used for detecting the wind speed of the external environment and generating an electric signal, and the first control unit is used for controlling the atomization assembly to work based on the electric signal. The wind sensor of the fragrance machine is arranged outside the main body, and the wind sensor can detect the wind speed (air flow rate) of the external environment so as to control the opening and closing of the atomization assembly of the main body by detecting the wind speed, that is, whether the main body exhausts mist or not is controlled, so that the fragrance machine works intelligently.

The present application discloses a test structure and a wind tunnel for a wind sensor, wherein the test structure includes: a station room having a test space, and a side wall of the station room having a take-out opening; a placement rack located outside the test space and relatively fixed to the station room; an adapter used to install the wind sensor to be tested, and the adapter is placed on the placement rack; a mobile fixed assembly including a mechanical gripper and an automatic fixture, the automatic fixture is arranged in the test space, the mechanical gripper is located in the test space or outside the test space, the mechanical gripper can pass through the take-out opening, the mechanical gripper is used to grab the adapter, put the adapter into the automatic fixture or take it out from the automatic fixture; a sliding door module is used to cover or open the take-out opening. The test structure of the present application can realize automatic installation and removal of the adapter.

A system includes a gas leak instrument configured to monitor for gas leaks from an emission source, wherein the gas leak instrument includes a gas sensor, a wind sensor, and a controller coupled to the gas sensor and the least one wind sensor. The controller has a processor, a memory, and instructions stored on the memory and executable by the processor to cause operations including determining a baseline gas concentration in an environment based on first gas measurements from the gas sensor and first wind measurements from the wind sensor and determining an emission gas rate based on the baseline gas concentration, second gas measurements from the gas sensor second wind measurements from the wind sensor, and the Gaussian plume model.