399results about How to "Keep a safe distance" patented technology

The invention discloses an air traffic control system for four-dimensional (4D)-trajectory-based operation. The air traffic control system comprises a data communication module, a monitoring data fusion module, an airborne terminal module and a control terminal module, wherein the monitoring data fusion module is used for fusing the monitoring data of an air traffic control radar and automatic dependent monitoring data, and providing real-time trajectory information for the control terminal module; and the control terminal module comprises a preflight conflict-free 4D trajectory generation sub-module, an in-flight short-term 4D trajectory generation sub-module, a real-time flight conflict monitoring and alarming sub-module and a flight conflict resolution 4D trajectory optimization sub-module. The invention also discloses an air traffic control method for the system. The control terminal module processes flight plan data, generates 4D trajectories, analyzes potential traffic conflicts of air traffic conditions and provides an optimal resolution scheme. By the system and the method, flight conflicts can be effectively prevented, and the safety of air traffic can be improved.

A method of transmitting data over lines of power line network comprising: inductively generating opposite polarity currents representing the data on first and second lines of a pair of lines of the network at a first location along the lines that propagate along the lines; and sensing the propagated currents at a second location along the lines.

A system and method for detecting a proximity of a person to a machine includes a first transmitter unit carried by the person, a plurality of receiver units located on the machine at know locations, and a processing unit including data defining a first boundary around the machine. The first transmitter unit transmits a magnetic proximity signal having a predetermined signal strength and a predetermined signal frequency. Each of the plurality of receiver units is for determining a received signal strength of the received magnetic proximity signal. The processing unit: determines a location of the first transmitter unit relative to the machine based on the received signal strength of the magnetic proximity signal and the known location of the plurality of receiver units; and outputs a proximity warning signal if the location of the transmitter relative to the machine is within the first boundary around the machine.

The invention discloses an unmanned surface vessel formation control method based on a leader follow-up structure. The method is used for multiple fully-driven unmanned surface vessel systems, and a formation control method based on a leader-follower is provided to prevent any follower from colliding and being kept in connection with a leader thereof. The method comprises following steps of establishing a dynamic model of an unmanned surface vessel; setting a position output tracking error constraint condition of a follower; designing a tracking error conversion function; applying the dynamic surface control technology and designing a virtual controller; designing a disturbance observer for compensating external unknown interference like wind wave flows; and constructively designing a tracking formation controller. According to the invention, it is ensured that any follower is always kept away from the leader thereof for a certain safe distance, and is in a communication connection range of the leader thereof; and by use of the dynamic surface control technology, accelerated speed of the leader is prevented from being used and practicability of a design scheme is improved.

A remotely activated door-opening mechanism is provided for a cage trap having an animal enclosure, preferably a cage trap as disclosed in U.S. Publ. No. US2008 / 0115405. The mechanism is mounted outside the enclosure of the trap and is preferably remotely activated by an IR or RF transmitter to open a door of the trap and release a trapped animal when the operator is at a safe distance away. The mechanism may also be manually set with a time delay and may be associated with either a main entry door to the trap or with a secondary escape door located at an opposite end of the trap.

The invention discloses an unmanned vehicle path planning method for a special scene in a 5G environment, and the method depends on an unmanned vehicle path planning system based on 5G communication.The path planning system comprises an unmanned vehicle, a road side unit, a cloud platform, and a 5G network. The method provided by the invention has the characteristics of a high transmission speed,more transmission information and high signal quality, can overcome a problem of special scene communication, and realizes efficient, stable and rapid information interaction among the unmanned vehicle, a road side unit and a cloud platform; through organic combination of historical information and real-time perception, computing resources occupied by the cloud platform in conventional operationare effectively reduced, and the safety and accessibility of unmanned driving are guaranteed; and the vehicle, the road and the cloud interact, all-time, all-weather, full-coverage and high-precisioncollaborative perception can be achieved, and a decision of path planning and adjustment is completed together so that the vehicle running efficiency is improved.

The present invention relates to a method and an acoustic measurement system for determining individual noise sound contributions of a plurality of physical noise sources of a motorized vehicle at a target or reference location. The method comprises steps of placing a plurality of reference microphones at respective reference positions adjacent to respective ones of the physical noise sources, placing a measurement microphone at the target location, recording a plurality of noise sound signals and recording a target noise signal. The plurality of noise sound signals are adaptively separated using blind source separation to produce a plurality of mutually independent noise sound signals representing respective estimated noise sound signals of the plurality of physical noise sources. Each of the mutually independent noise sound signals is correlated with the recorded target noise signal to determine time domain or frequency domain characteristics of a plurality of linear transfer path filters representing respective transfer functions between the plurality of independent noise sound signals and the measurement microphone at the target location. At least one of the independent noise sound signals, representing one of the physical noise sources, may be applied to the corresponding linear transfer path filter to generate at least one target noise signal component representing the individual noise sound contribution of the physical noise source at the target location.

A method of transmitting data over lines of power line network comprising: inductively generating opposite polarity currents representing the data on first and second lines of a pair of lines of the network at a first location along the lines that propagate along the lines; and sensing the propagated currents at a second location along the lines.

The invention discloses a multi-train rank longitudinal control method based on vehicle-vehicle communication. The method comprises the following steps that: 1) each vehicle senses the motion state information of the vehicle per se and sends the motion state information to other vehicles in a broadcasting mode, and after each vehicle receives the state information of other vehicles, it is determined whether the vehicle meets the formation condition or not; 2) a pilot vehicle sends a team formation request, and vehicles meeting the formation condition start to form a team; 3) vehicle-vehicle communication devices of each vehicle obtain respective sensor information, and package the sensor information into a data stream to be broadcast to other vehicles; 4) an upper layer controller of eachfollowing vehicle calculates the expected acceleration and the expected speed of the vehicle according to the pilot vehicle state information, the front vehicle state information and the sensor information of the vehicle per se obtained by the vehicle-vehicle communication devices; 5) a lower layer controller of each following vehicle receives the expected speed or acceleration from the upper layer controller to complete the control and tracking of the longitudinal speed of the rank. The method can obviously improve the adaptability of the motorcade under complex working conditions.

Feed line for at least one local coil in a magnetic resonance tomography apparatus, comprising at least one coil plug as well as at least one standing wave barrier for suppression of unwanted radio-frequency currents on a conductor cable of the feed line, with the standing wave barrier integrated into the coil plug.

An electrified cleaning insulator device based on an unmanned aerial vehicle comprises a machine frame (4) and a propeller wing. The electrified cleaning insulator device is characterized in that a camera (5) is installed on the abdomen of the unmanned aerial vehicle; and a detergent spray head (1), a high-pressure spray head (2) and a low-pressure spray head (3) are installed on the machine frame (4). The detergent spray head (1), the high-pressure spray head (2) and the low-pressure spray head (3) are controlled through different valves, the opening of the valves is controlled through a steering engine connected to a flight control system on the unmanned aerial vehicle; the valve opening is controlled by means of transmission information of a ground station, and the opening of the different valves is regulated by arranging different buttons on the ground station to perform transmission to the flight control system of the unmanned aerial vehicle. The electrified cleaning insulator device has the advantages that an insulator can be cleaned flexibly and conveniently; compared with manual cleaning through manual water spraying, water resources can be saved, and the manual operation risk is reduced. In the aspect of cleaning effects, the three spray heads are adopted, the targeted cleaning is performed, and the insulator cleaning efficiency is improved.

The invention relates to a control method of an air traffic control system. The air traffic control system comprises a data communication module, a monitoring data fusion module, an airborne terminal module and a control terminal module; the monitoring data fusion module is sued for fusing air traffic control radar monitoring data and automatic related monitoring data so as to provide real-time track information to the control terminal control; the control terminal module comprises a preflight conflict-free 4D track generation sub-module, an in-flight short-period 4D track generation sub-module, a real-time flight conflict monitoring and warning sub-module and a flight conflict resolution 4D track optimization sub-module. The air traffic control method of the system is that the flight plan data are processed through the control terminal module, and a 4D track is generated through a hidden markov model, so as to analyze the potential traffic conflict of the air traffic condition; the optimal resolution scheme is provided by the model predictive control theory method. By adopting the control method of the air traffic control system, the flight conflict can be effectively prevented, and thus the safety of air traffic can be improved.

The invention discloses an active prevention and control system for vehicle transportation safety. The active prevention and control system comprises an infrared distance measuring sensor, a video acquisition module, a main control chip, an analysis module, a cloud server, an intelligent navigation system and a terminal module, wherein the infrared distance measuring sensor is used for measuring the distance between a vehicle and other vehicles, and the video acquisition module is used for acquiring video information of a driver in the driving process; and the main control chip is used for analyzing and processing the acquired information, judging whether the vehicle is currently in a safe distance or not and whether the driver is in a fatigue driving state or not, and forwarding an analysis result to the terminal module through the cloud server to remind the driver. According to the active prevention and control system, the driving distance and the state of the driver can be effectively monitored, and active early warning is carried out on non-safe distance and fatigue driving, so that the driving safety performance is improved, and a guarantee is provided for the life safety of the driver.

The embodiment of the invention discloses a vehicle automatic lane changing method and system and a vehicle. A current vehicle is provided with a camera device and a short-wave radar device. The method comprises the following steps of detecting whether or not the current vehicle satisfies triggering condition of lane changing, and the condition is satisfied, a first motion parameter of surroundingvehicles can be obtained through the camera device, and a second motion parameter can be obtained through the short-wave radar device; judging that whether the current vehicle meets low-speed detection condition, if not satisfying, based on corresponding combined weight of the camera device and the short-wave radar device, data combining is conducted on the first motion parameter and the second motion parameter to obtain a first target location and a first target speed of the surrounding vehicles; and determining a target lane satisfying the condition of lane changing from adjacent lanes at the two sides of the current vehicle based on the first target location and the first target speed of the surrounding vehicles and controlling the current vehicle to change from the current lane to thetarget lane. According to the embodiment of the vehicle automatic lane changing method and system and the vehicle, the security of lane changing of the vehicle can be improved.

A method and apparatus are described for detecting the presence of explosives. The invention utilizes Laser Induced Acoustics (LIA), wherein an area of a substrate surface is irradiated, via deep UV pulsed laser, with laser pulses to generate a detectable audible signal. The invention also provides substantial improvements in the eye-safety of otherwise potentially harmful laser beams. Thus, the invention is particularly well-suited to use in public venues where detection of explosives or improved laser safety may be required.

A warning system for warning a following vehicle includes a distance measuring unit, a calculating unit, a warning unit, a video recording unit and a display unit. The distance measuring unit measures a distance to the following vehicle, and the warning unit shows warning information if the following vehicle does not keep a safe distance. When the distance is smaller than a threshold distance, the video recording unit records video of the following vehicle. Thus, the warning system can effectively warn a driver who does not keep the safe distance, and provide a direct evidence for policing the driver who disobeys traffic rules so that the good driving environment can be obtained. Meanwhile, it is also possible to provide a reference to tell the driver the speed and the distance of the following vehicle through the display unit.

A load change safety system in which a sheet stacker having a stacking deck formed with a discharge end discharges sheet material onto and builds a sheet stack on a conveying sheet stack removal system formed with a receiving means. A variable pinch point gap is formed by relative motion between the discharge end of the stacking deck and the receiving means of the conveying sheet material removal system. The safety system includes redundant means selectively preventing a decrease in the variable pinch point gap. The redundant means of the safety system preferably includes an electro-optical light guard means operably connected to the redundant means with one or more redirections of light beams to create a light guard perimeter guarding portions of the stacker and sheet removal system to guard against access to the pinch point.

An extendable electronic discharge staff will consist of a central sliding member translating within a tubular body member to be positioned by the means of a spring-loaded ball detent. When the central sliding member is positioned, it will be locked in place by the means of a locking nut at the distal end of the tubular body member. A forward adjustable handgrip will be located and locked into position along the length of the tubular body member to accommodate the size and comfort of the person using the device. By rotating the rear hand grip, the device will be turned on or off, and by sliding the rear handgrip forward or backward a high or low voltage will be delivered to the distal contact end of the central sliding member. On an alternate embodiment having three contact positions, the default center position delivers low voltage while both forward and backward outer positions deliver high voltage. This action gives the operator two different voltage capabilities along with a visible snapping arc to indicate the potential of the device. A sealed cylindrical housing fixed to the rear of the tubular body member will house a removable battery pack and electronic control module. The device is capable of giving a momentary delivery, a prolonged delivery, or several prolonged deliveries and has been designed not to stun an individual unless necessary, giving the unruly individual several warnings in advance.

The invention relates to a length-adjustable con rod (1) for a reciprocating piston engine, particularly an internal combustion engine, having at least a first and a second rod part (2, 4), wherein the two rod parts (2, 4) can be pushed together and / or inside one another in a telescoping manner, wherein the second rod part (4) forms a guide cylinder (4a) and the first rod part (2) a piston element (3) which can be pushed longitudinally in the guide cylinder (4a), wherein a high-pressure chamber (4b), into which at least one oil channel (10) opens, is clamped between the first and the second rod parts (2, 4). To enable the compression ratio to be adjusted in the simplest and most reliable manner possible, according to the invention the two rod parts (2, 4) can be fixed, by a locking device (32), relative to one another in at least one position, preferably corresponding to a minimum length of the con rod (1).

A remotely activated door-opening mechanism is provided for a cage trap having an animal enclosure, preferably a cage trap as disclosed in U.S. Publ. No. US2008 / 0115405. The mechanism is mounted outside the enclosure of the trap and is preferably remotely activated by an IR or RF transmitter to open a door of the trap and release a trapped animal when the operator is at a safe distance away. The mechanism may also be manually set with a time delay and may be associated with either a main entry door to the trap or with a secondary escape door located at an opposite end of the trap.

The invention discloses a vehicle distance control system based on communication among vehicles and a control method thereof. According to one aspect of the invention, the vehicle distance control system based on communication among vehicles comprises a relative distance and speed input part which receives a relative distance and a relative speed between a front vehicle and the vehicle; a communication part which receives pavement information from an identified front vehicle; a constant changing part which compares the received pavement information with the pavement information received at a previous time point and changes a vehicle distance constant when the pavement information changes; a target vehicle distance calculation part which calculates a target vehicle distance between an identified front vehicle and the vehicle according to the changed vehicle distance constant; and a target acceleration calculation part which utilizes the received pavement information to calculate a target acceleration of the vehicle. According to the invention, a safe distance is ensured according to pavement assistance.

The various embodiments of the present disclosure relate generally to crane control systems. An exemplary embodiment of the present invention provides a crane control system comprising a real-time position-location module, an on-off controller module, and an input-shaper module. The real-time position-location module generates a position signal indicative of the distance between crane trolley and a desired location of safety. The on-off controller module maps the position signal to a velocity command signal, wherein the velocity command signal comprises instructions for the crane trolley to move in a vector relative to the desired location in at least a first velocity only if the distance between the crane trolley and the desired location is greater than a cut-off threshold 150. The at least a first velocity is a substantially constant. The input shaper module manipulates the velocity command signal mapped by the on-off controller module to dampen payload oscillations.

The invention relates to a flight conflict resolution method of an air traffic control system. The air traffic control system comprises a data communicating module, an airborne terminal module and a control terminal module; the control terminal module comprises two sub-modules such as a real-time flight conflict monitoring and warning sub-module and a flight conflict resolution 4D flight path optimizing sub-module; the flight conflict resolution method of the system is characterized in that the 4D track of each aircraft is directly obtained by an air traffic control center in the future so that potential traffic conflicts under airspace traffic conditions can be analyzed, and the most optimal resolution solution is provided by adopting a model predication and control theory method. The flight conflict can be effectively avoided by the flight conflict resolution method and the security of the air traffic is also improved.

The invention discloses a convenient installation device for an insulation puncturing wire clamp, and relates to the field of fire connection of power scissors. The convenient installation device comprises an installation box body, an insulation long rod platform, a clamp lock wire device, a clamping device and a lifting device. Compared with a traditional device, the device has the advantages that the whole installation process can be completed by a single person during operation, the installation tool has a s suspension function, the person does not need to hold for a long time during installation, time and labor are saved, moreover, the device has relatively far insulation distance, and the personal safety can be ensured.

A remotely controlled, motorized drive system for a disconnector used in switchgear. An operator pushes a button on a remote control, which signals a receiver in the disconnector to engage a motor that is coupled to a drive shaft. The drive shaft causes movable contacts of the disconnector to be moved into engagement or out of engagement with sets of fixed contacts in the switchgear that are connected to the line supply and to the circuit breaker that is bolted into the switchgear. One set of contacts is electrically coupled to the line supply, which can carry up to three phases of current. Another set of contacts is connected to corresponding terminals of the circuit breaker. A second motor controls movement of a grounding bar that grounds the circuit breaker to earth. Indicator lights on the switchgear panel indicate the position of the disconnector for visual confirmation of the same.

The invention discloses a high-efficiency tree peeling machine. The high-efficiency tree peeling machine comprises a rack, a driving device and a plurality of cutting and feeding subassemblies, wherein each cutting and feeding subassembly comprises a cutter head subassembly, an upper feeding wheel and a lower feeding wheel; the cutter head subassemblies are rotatably arranged on the rack; the axis of each cutter head subassembly is parallel to the feeding direction; a connecting line between each cutter head subassembly and the center of the corresponding upper feeding wheel and a connecting line between each cutter head subassembly and the center of the corresponding lower feeding wheel form an acute triangle; feeding space is reserved between each cutter head subassembly and the corresponding upper feeding wheel; feeding space is also reserved between each cutter head subassembly and the corresponding lower feeding wheel; the axes of the upper feeding wheels and the axes of the lower feeding wheels are not parallel to the axes of the cutter head subassemblies; the direction of the horizontal component, which acts on materials, of each upper feeding wheel and the direction of the horizontal component, which acts on the material, of each lower feeding wheel are consistent with the feeding direction; and the cutter head subassemblies, the upper feeding wheels and the lower feeding wheels are driven to rotate by the driving device. By the cutting and feeding subassemblies, a plurality of trees can be simultaneously processed by the high-efficiency tree peeling machine, and the processing efficiency is improved.

An elevator with an elevator cage guided in a shaft between a shaft head and a shaft pit, having an elevator cage roof and an elevator cage base and a drive, which is connected by at least one hauling cable with the elevator cage, whereby in particular for performing maintenance work the elevator cage roof is designed to be accessible, whereby the drive is arranged at least partly in the shaft head over a first region of the elevator cage roof and the accessibility of the elevator cage roof is restricted to a second region.

A battery including a battery case, an electrode assembly disposed in the battery case, the electrode assembly including a winding of a first electrode plate, a second electrode plate and a separator, wherein the separator is interposed between the first and second electrode plates, a cap assembly covering the battery case, and a member configured to prevent a short circuit of the electrode assembly.