878 results about "Bad weather" patented technology

A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater. Preferred embodiments include modulators with a resonant LC circuit including a diode which is back-biased for "off" (i.e., no transmit) and forward biased for "on" (or transmit). The modulator is a part of high performance transceivers for wireless, millimeter wave communications links. A preferred embodiment provides a communication link of more than eight miles which operates within the 71 to 76 GHz portion of the millimeter spectrum and provides data transmission rates of 1.25 Gbps with bit error rates of less than 10<-10 >. A first transceiver transmits at a first bandwidth and receives at a second bandwidth both within the above spectral range. A second transceiver transmits at the second bandwidth and receives at the first bandwidth. The transceivers are equipped with antennas providing beam divergence small enough to ensure efficient spatial and directional partitioning of the data channels so that an almost unlimited number of transceivers will be able to simultaneously use the same spectrum. In a preferred embodiment the first and second spectral ranges are 71.8+/-0.63 GHz and 73.8+/-0.63 GHz and the half power beam width is about 0.2 degrees or less. Preferably, a backup transceiver set is provided which would take over the link in the event of very bad weather conditions. In other embodiments especially useful for mobile applications at least one of the transceivers include a GPS locator.

The invention relates to a control method of a bus arrival time prediction model, comprising the following steps: (1) firstly establishing a historical database of the bus operating state; (2) training historical data by a BP (backpropagation) neural network method to derive the optimal mean travel time of a bus from a departure point to an electronic stop board; and (3) introducing dynamic operating information of the bus to modify the optimal mean travel time derived by the BP neural network method. Compared with the prior art, the invention not only can accurately predict the bus arrival time under a normal operating condition of the bus, but also can accurately predict the bus arrival time under complex operating conditions of traffic jam, traffic accidents, bad weather conditions, crossing of more traffic light intersections, operation in rush hours or slack hours and the like, and also can automatically update parameters in the prediction model according to the latest historical data of bus operation.

Disclosed is a lane changing and overtaking assisting method and system based on inter-vehicle communication. The method is characterized in that inter-vehicle communication is built among different vehicles, information support is provided for lane changing and overtaking is provided for drivers of the vehicles through information interaction, the inter-vehicle communication is achieved through short-range communication protocols, when a driver triggers a lane changing and overtaking event, a system identify and process the event and transmits the same to a specified vehicle, and the vehicle received the event restores the event and displays the same as prompt information which can be identified by the driver of the specific vehicle. The system comprises an event identifying module, an event processing module, a wireless communication transceiving module, an event restoring module, a user interface module, and a hardware system formed by a wireless communication device, a positioning device, an antenna, an information processing system and a touch screen. By the method and the system which can be normally used under conditions of bad weather and bad vision, driving safety can be increased effectively.

The invention discloses a video identification-based detection apparatus and a method thereof of vehicles against regulations. The detection system comprises an upper supervisor, a control and transmission device, an infrared ray panoramic camera and a high speed close-up camera. The control and transmission device includes a video acquisition and conversion module, a rule arrangement module, a vehicle detection module, a peccancy analysis module, a camera control module, and a data wireless transmission module. According to the detection method, an image identification technology and a videotracking technology are applied, so that a problem of multi-target detection on vehicles against regulations is effectively solved and misjudgment on normal lane changing behaviors can be avoided; moreover, vehicles against regulations can be detected on the night condition and the condition of bad weather, wherein the vehicles are at the far distance. According to the invention, utilized equipment is perfect and the employed technology is mature; detection efficiency is high; detection cost is substantially reduced; and an efficiency and an intelligent level of traffic management are improved.

The invention discloses a scheme of a flying lifesaving system fixedly or movably arranged on the bridge or deck, characterized in that: a large-diameter main ducted coaxial reversible dual-rotor body is used for bearing main lift; small-diameter ducted rotor bodies are symmetrically arranged around the large-diameter main ducted coaxial reversible dual-rotor body in the same plane, connecting arms can freely move in the forms of stretching, twisting, shaking and swinging, thus the effects of bearing assistant lift, mainly controlling the direction and resisting vortex ring are achieved; and a variable inertia system and an energy delivery dragging cable system are arranged in the main rotor. The device can resist turbulent flow sudden shearing transition winds and has anti-adverse wind long-endurance submersible capability, can fly within the length of the dragging cable or the distance of wireless remote like helicopter rescue principles under sea conditions in bad weather and directly fly beyond the persons in water to hover to conduct marine salvage; and can land on the water surface to float to release rescue devices to let the persons in water enter, and swan the rescue devices by using the motive force of the rotors and the pulling force of the energy delivery dragging cable to the lifeboats to save people, thus the rescue scheme and equipment of the rescue devices under sea conditions in bad weather are achieved.

A foldable solar energy apparatus is provided. The foldable solar energy apparatus includes a frame, a first solar energy module, an actuation module, and a power module. A photovoltaic panel is coupled to a first holder of the first solar energy module, and electricity generated by the photovoltaic panel is stored in the power module. The first holder is rotatably coupled to the frame so that the first holder is collapsible via the actuation module, which is disposed at the frame and connected to the first holder. The first holder and the actuation module provide the solar energy apparatus with a foldable function. Thus, the solar energy apparatus can be folded in response to changes in weather conditions, thereby preventing the photovoltaic panel from being damaged by bad weather.

A vehicle travel assisting system has an area setting part for setting an area, in which weather information is acquired. The area setting part sets the area by using at least one of an attribute of a vehicle travel road, vehicle equipment for bad weather travel, and vehicle information such as a vehicle type and vehicle chassis lowest height. If the acquired weather information varies along a travel road of the vehicle, weather information is provided at earlier time according to the attribute of the travel road or unnecessary weather information is limited according to the equipment or the information of the vehicle.

The invention discloses a fluorosilicone rubber nano-composite alloy triplicate-prevention paint and the production method. The organic silicon provided with hydroxyl is introduced into the carbon resin, and is dispersed into resin polymerize and cross-linked by a variety of polymer resin via nano-particle which is processed by nano-dispersion solution; and then the fluorosilicone rubber nano-composite alloy triplicate-prevention paint which can resist salt spray, acid, alkali and impact; has strong adhesive attraction, strong resistance to elements, and heavy corrosion resistance; can prevent pollution flashover , and can drain for anti-icing is produced by modifying the obtained resin. The invention has high reaction energy and ultra-low surface energy, can resist chemical corrosion and electrochemical corrosion, has ability for resisting strong corrosion medium, has strong adhesive attraction and high reliability between paint film layers, can prevent water, oxygen and other corrosion mediums from destructing, can resist ultraviolet radiation, can resist temperature change, has super resistance to elements, has long coating maintenance usage duration, and is applicable to bad weather conditions and all kinds of strong corrosive environments.

A security system that secures a building includes a weather detector for detecting weather conditions, such as thunder or high winds, which are likely to cause false alarms in sensors such as an acoustic glass break sensor, shock sensor and vibration sensor. The weather detector may include a sensing component that senses atmospheric conditions external to the building, such as temperature, pressure, wind speed and/or lightning. The weather detector may also include a component for receiving a data communication, such as from a radio, Internet, or telephone link, indicating that the weather condition is present in a vicinity of the building. The security system operates in a bad weather mode by requiring corroboration of intrusion detection signals from the sensors that can cause false alarms.

The invention discloses an automatic protection device of a photovoltaic solar cell panel. The automatic protection device comprises a solar cell panel and a bracket thereof, a solar cell panel protection curtain plate and a driving device thereof, and slide grooves formed in the two sides of the bracket of the solar cell panel, wherein a curtain plate supporting frame is arranged on the bracket of the solar cell panel; a hairbrush is arranged at the front end of the curtain plate; the bracket of the solar cell panel is arranged on a bracket capable of moving up and down, forwards and backwards; and the bracket of the solar cell panel can be used for adjusting the levelness of the bracket of the solar cell panel through an electric screw rod device and a slide way mechanism at the front part. A sensor provided by the invention can be used for detecting a signal of bad weather; and the curtain plate covers the solar cell panel so that the protection aim is realized. Particularly, an air speed signal is detected through an air speed sensor and a solar device is prone to be a leveled state by a control device through the electric screw rod device, so that damages of air pressure are reduced.

The vehicle supervision system based on the comprehensive real-time command and control system of intelligent transportation involves the supervision field of vehicles; it is mainly composed of: control system, communication network system, monitoring system, defense alarm system, and power supply system; the control system through the power supply system 1. The communication network system is connected with the monitoring system and the defense alarm system; the vehicle supervision system transmits the relevant information of the vehicle, the relevant information of the driver, and the operation related to traffic flow performed by the driver to the vehicle through the communication network system. The information and/or data information is transmitted to the traffic control system; the vehicle supervision system obtains the traffic-related information and/or traffic instructions transmitted by the traffic control system through the communication network system; the application of the present invention It is convenient for the driver to understand the traffic conditions in detail, drive safely, and complete the trip quickly. Inclement weather and unfamiliar road conditions ensure smooth and safe travel of the vehicle.

The invention discloses an intelligent vehicle navigation system, a navigation method and an intelligent vehicle. The navigation system comprises a weather information acquisition module, a road condition information acquisition module, a communication module and a navigation processing module. The communication module is used for transmitting information, about weather, road condition and location of pathways, acquired by the intelligent vehicle to a navigation server to allow the navigation server to generate weather and road condition navigation information according to the information about weather and road condition and relevant location information acquired by at least one intelligent vehicle. The navigation processing module is used for acquiring weather and road condition navigation information which are fed back by the navigation server according to users' navigation requirement, and displaying the information about weather and road condition on a display, thereby determining navigation ways according to the navigation information about weather and road condition. Users of the intelligent vehicle can determine driving ways according to information about weather and road conditions which are shared by other users, thereby avoiding ways with bad weather or severe road conditions initiatively.

The invention relates to the fields of intelligent robot, in particular to a multi-axis propulsion water search and rescue robot. The multi-axis propulsion water search and rescue robot comprises a central control platform, at least three downward projecting brackets are arranged along the circumferential direction of the central control platform, hinge cable devices are arranged on each bracket, hinge cable devices are hoisted with foldable lifesaving net under the central control platform through cables, a power float device is also connected at the lower end of each bracket, a controller is arranged on the central control platform, and the controller is communicated with the hinge cable device and a power float device. The multi-axis propulsion water search and rescue robot has various motion modes, such as hovering, advancing, retreating and 360 DEG free steering in water, has high stability, has high ability to withstand wind and wave, and can be a good alternative to the traditional rescue way; meanwhile the design of the foldable lifesaving net realizes the purpose of fast and safe lifesaving, can realize multiple tasks such as water search and rescue, the water surface monitoring, the water measurement and control and the like in complicated water area and bad weather condition, practicability is high, flexibility is good and popularization prospect is good.

There is provided a device in which surroundings of a building can be monitored using a sensor; when detecting an intruder, an object can be detected even in the case of bad weather; and a predetermined area can be monitored using as few sensors as possible. The device includes a security system which emits a radio wave from a building to a predetermined area outside the building to detect an object, and on the basis of output of the object detecting unit, a judgment is made as to whether or not the object will intrude into the predetermined area.

The invention relates to a vehicle trajectory prediction and collision warning method based on high frequency and high precision positioning information. Real-time positioning information with the frequency of 5hz and the accuracy of centimeter level is collected by a vehicle-mounted positioning device. According to the information of vehicle position, speed and direction angle at multiple pointsin the adjacent time, a vehicle driving trajectory is fitted. The vehicle position is predicted at the target time. According to a contour conflict method, whether a vehicle has the risk of collisionwith a neighboring vehicle at the target time is judged if the vehicle still drives at the current speed and direction angle. Compared with a traditional method which carries out vehicle distance determining and collision warning through vehicle-mounted sensors, the method proposed by the invention can effectively avoid collision warning failure caused by high running speed of vehicles, bad weather, poor line of sight and other conditions, and has the advantages of simple algorithm, low cost and easy promotion.

Disclosed is an array type sea wind and sea wave dual-functional generating device, which relates to a generating device, in particular to a generating device applying the energy of sea wind and sea wave. The device comprises a generating unit array group mutually connected by steel poles and every generating unit comprises a sealed can buoy internally provided with a generator; the spindle of the generator stretches outside the upper side and the lower side of the can buoy and is fixed with a plurality of wind and wave bearing devices. The bottom of the spindles of all generators is inserted into a quadrilateral bottom border, four angles of which are respectively provided with a motor in a sealed box body; an anchor chain is around the rotating shaft of the motor and the other end of the anchor chain is fixed to a moorstone at the bottom of the sea. The wind and wave bearing devices are a main component receiving the push power of the sea wind the sea wave. The wind and wave bearing device comprises a rotating ring which is evenly provided with a plurality of umbrella push wheels folding or unfolding with the wind and wave. The device of the invention drives the generators to converse the energy of sea wind and sea wave into power by the umbrella push wheels and avoids damage caused by typhoon and other bad weather through submergence.

The invention discloses a method for resisting backward dispersion for a laser semi-active seeker. The laser semi-active seeker is used for automatically searching, intercepting and tracking a ground fixed/moving target by the adoption of diffuse-reflected laser of a target. Laser on a transmitting path is attenuated due to suspended matters in the atmosphere, and an echo signal formed by backward dispersion of the atmosphere may interfere the capture of a target signal by the seeker. According to the method, the technology of wave gate is used for dividing the backward dispersion light and the target reflection light in different distances according to a sequence of time, so that the target reflection light is enabled to reach and image in gating time of a laser receiver, and the seeker is ensured to accurately capture target echo. By the adoption of the method for resisting backward dispersion, the seeker can be used for overcoming backward dispersion in bad weather conditions of low brightness, poor atmosphere transmission characteristics or serious backward dispersion and the like, thus a signal-to-noise rate of laser imaging is improved, and the function of filter on an interference target is further provided.

The field of the invention is that of optoelectronic taxiing-aid devices for aircraft, comprising a so-called head-up display enabling information to be presented in the visual field of the pilot. It applies more particularly to large civilian aircraft of the Boeing 747 or Airbus A380 type. The purpose of the invention is to present, in the display, a set of ergonomic symbols for informing the pilot of the path to be followed in a turn and the exact situation of his vehicle on the taxiway, enabling him to taxi in total safety, including in bad weather conditions. These symbols comprise lateral safety marks, represented by posts of variable height, representing the limit of the taxiway, positioned at regular intervals and located either side of the center line of the taxiway and equidistant from the latter. When the taxiing conditions are such that these posts are no longer visible in the display, a view from above of the situation of the aircraft on the taxiway is displayed.

The invention provides a dynamic speed limit optimization control method to reduce secondary rear-end collisions in bad weather on a fast road. Traffic flow detection devices and meteorological monitoring devices are arranged on each section of the fast road to acquire traffic flow status and meteorological data. In the propagation process of congestion caused by traffic accidents in bad weather,a car-following model is used as the core algorithm to calculate the conditions of traffic accidents, so as to calculate and solve the optimal speed limit value of the upstream section. The speed limit value is issued through variable information signs on the roadside, so as to reduce secondary rear-end collisions. Compared with the prior method, the improved dynamic speed limit optimization control method provided by the invention considers the traffic flow operating status on the road and meteorological parameters such as visibility and road surface conditions at the same time; the calculated optimal speed limit value is accurate and reasonable; the climate and environmental conditions of the specific road can be considered; secondary rear-end collisions in bad weather can be effectivelyreduced; and the traffic safety of fast roads in China can be improved.

The invention relates to a composite modified asphalt waterproof coiled material. The composite modified asphalt waterproof coiled material consists of an upper covering layer, a lower covering layer, a middle carcass layer and two modified asphalt sizing material layers, and is characterized in that one of the two modified asphalt sizing material layers is arranged between the upper covering layer and the middle carcass layer, and the other modified asphalt sizing material layer is arranged between the lower covering layer and the middle carcass layer; and each modified asphalt sizing material layer consists of 50 to 62 mass percent of asphalt, 8 to 10 mass percent of SBS (styrene butadiene styrene) synthetic rubber, 15 to 25 mass percent of waste rubber powder, 10 to 12 mass percent of waste oil, 1.5 to 2.5 mass percent of polypropylene resin and 3 to 6 mass percent of coarse whiting powder. The low-temperature performance of the asphalt is further improved, the sensitivity of the asphalt at low temperature is reduced, and the cyclic action of bad weather can be resisted, so that the service life of the material is prolonged, the production cost is greatly reduced, and a renewable resource namely base rubber powder can be fully utilized. The composite modified asphalt waterproof coiled material is applicable to water proofing of building layers, toilets and basements.