227results about How to "Reduce the likelihood of a collision" patented technology

The possibilities of collision of a mobile robot with objects can be reduced significantly in actual robot movements. In an aspect of the present invention, there is provided an autonomous mobile robot system including a mobile robot and a computing system. The mobile robot includes: a sensing section for measuring surrounding conditions of the mobile robot; a position-posture estimating section for estimating position-posture data from sensing data obtained by the sensing section and an environmental map; and a robot moving section for controlling movements of the mobile robot according to movement control data determined from the position-posture data thus estimated and movement route data.

The invention relates to a robot path planning method based on an improved artificial potential field method. Based on a traditional robot path planning algorithm, that is, the artificial potential field method, a scale factor is first introduced between a gravity function and a repulsion function to adjust the respective proportional actions in the resultant force, which effectively solves the problems of the hovering robot and the unreachable target near the target point; when the robot falls into a local minimum problem, a tangent method is used to select the optimal escape force directionsuch that the robot can jump out of the trap in time to explore other feasible paths; and finally, the robot can adaptively adjust the step size according to the complexity of the environment in whichit is located, thereby effectively reducing the possibility of collision with obstacles, reducing the number of path planning steps, and improving the execution efficiency of the algorithm.

The invention relates to a variable cross-section channel structure of a low-power cusp magnetic field plasma thruster, which relates to the field of cusp magnetic field plasma thrusters. The present invention aims to solve the problem that under the low power working condition of the existing tangential magnetic field plasma thruster, the insufficient ionization leads to performance degradation when the current density is low, and the performance degradation is also caused by the intensified interaction between the plasma and the wall surface when the current density is high. The problem. The channel is constructed by a ceramic channel and a permanent magnet. The ceramic channel is a one-piece structure, which is divided into two sections: the upstream part of the channel and the downstream part of the channel. The channel structure gradually expands from the upstream part of the channel to the downstream part of the channel. The outer wall of the ceramic channel is used for To achieve clearance fit with the inner wall of the permanent magnet. This structure increases the atomic density and ionization rate in the upstream ionization area, and at the same time reduces the interaction with the channel wall during the accelerated ejection of ions generated by ionization, prolonging the life of the thruster. It is used in the low power working condition of the tangent magnetic field plasma thruster.

A laboratory sample distribution system (100) comprises: a number of container carriers (1), said container carriers each comprising at least one magnetically active device, preferably at least one permanent magnet, and being adapted to carry a sample container (3), a transport plane (4) being adapted to carry said container carriers, and a number of electro-magnetic actuators being stationary arranged below said transport plane, said electro-magnetic actuators being adapted to move a container carrier on top of said transport plane by applying a magnetic force to said container carrier.

Embodiments of the invention allow a heater to reduce the clearance between a head element section and the magnetic section while reducing the risk of collision between the head element section and the magnetic disk during load/unload. In one embodiment, an HDD judges whether a heater is ON or OFF after the load process is started. If the heater is found set to ON, the HDD sets the heater to OFF. With the heater kept OFF, the HDD starts the actuator pivoting. If the heater is found set to OFF, the HDD moves the actuator from the parking position to the magnetic disk with the heater kept OFF. Upon completion of the load process, the HDD goes to the subsequent process. Since the heater is OFF during load, the risk of collision between the head element section and the magnetic disk is reduced.

The invention discloses a ship collision risk assessment and early warning method, a ship collision risk assessment and early warning system, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring hydrological information and meteorological information of a position where a specified ship is located, and acquiring navigation information ofthe specified ship and other ships; based on the hydrological information, the meteorological information and the navigation information, evaluating the trained adaptive ship collision risk evaluationmodel to obtain a real-time collision risk of the specified ship; determining a collision risk level of the specified ship according to the real-time collision risk; and outputting an early warning message associated with the risk level to the specified ship. According to the scheme, the self-adaptive ship collision risk assessment model is constructed, the ship collision risk is assessed by combining the regional historical information and the information during navigation, so that the assessment accuracy and the early warning timeliness of the ship collision risk can be improved.

The invention discloses an automobile five-limiting automatic alarm anticollision device and method. The device comprises a front collision recognition system, a rear collision recognition system and a five-limiting judgment processing system; the front collision recognition system comprises a front ultrasonic ranging module, an automobile speed measuring module and a front collision recognition module; the rear collision recognition system comprises a rear ultrasonic ranging module, an automobile speed measuring module and a rear collision recognition module; the five-limiting judgment processing system comprises a control unit, a voice alarm module, an automatic brake module and an electromagnetic anticollision module. According to the automobile five-limiting automatic alarm anticollision device, by means of division of the automobile five limits into the front three limits and the rear two limits, good alarm anticollision measures can be provided for a driver; when there is a collision probability, the collision probability is reduced to the minimum; when a collision occurs, the collision damage degree is reduced to the minimum.

The present disclosure relates to a system and method of alarm for a vehicle. The present disclosure describes a alarm system for a vehicle for allowing a driver to practice a defensive drive in a weather environment which is hard to recognize the situation around the vehicle. An embodiment provides a alarm system for a vehicle including a camera operable to be disposed at the vehicle so as to have a field of view exterior of the vehicle, where the camera configured to capture image data, an image processor operable to process image data captured from the camera; a plurality of sensors disposed at the vehicle for sensing at least one of a front, side, or rear so as to capture sensing data, an alarm device for alerting a driver when detecting an object located in blind spot of the rear of the vehicle, and controller including at least one of processor configured to process at least one of (i) processing result of the captured image data and (ii) sensing data captured by the plurality of sensors.

A vehicle travelling control device is configured to cause a vehicle to automatically travel along the target lateral position set in a travelling lane in advance. The device includes a peripheral information detection unit configured to detect peripheral information of the vehicle, a preceding vehicle recognition unit configured to recognize a position of the preceding vehicle in an adjacent lane which is adjacent to the travelling lane based on the peripheral information detection unit, and a travel control unit configured to cause the vehicle to automatically travel along a separated lateral position which is separated from the target lateral position at the opposite side of the adjacent lane side in a case where a lost duration that is a continuous period of time during which the position of the preceding vehicle is lost in the preceding vehicle recognition unit reaches a first predetermined time.

A communication control apparatus in which, when requested to transmit (transmission) terminal information from information processing means, a transmission timing controller obtains past own terminal communication band information from an information storage, and determines whether or not to control a transmission timing. Moreover, the transmission timing controller calculates a back-off parameter for the control based on a past reception power information history that is obtained from the information storage, and sets a back-off parameter to a transmission device.

The invention is applicable to the field of data communication, and provides a method for realizing data transmission based on a gatekeeper by aiming at the problems existing in the prior art. The method is used for calculating an HASH ID value by aiming at the conditions that IP messages passing through the gatekeeper are effective, and IP messages passing through the gatekeeper have source IP addresses and target IP addresses. Isolation rule matching of the IP messages is carried out through the HASH ID value, and when the IP messages pass through the gatekeeper, a host at one end of the gatekeeper needs to transmit four or more layers of data to a host module at the other end of the gatekeeper, and the host module at the other end of the gatekeeper reconstructs the received data into IP messages and sends out the IP messages.

The present invention relates to a wireless communication terminal and a wireless communication method for efficiently scheduling simultaneous uplink transmissions of a plurality of terminals.

To this end, provided are a wireless communication terminal, the terminal including: a transceiver; and a processor, wherein the processor is configured to: generate an uplink packet, wherein a predetermined field of a MAC header of the uplink packet indicates information on uplink data of the terminal, and transmit the generated uplink packet to a base wireless communication terminal, and a wireless communication method using the same.

An embodiment of the invention provides a detection system based on an unmanned aerial vehicle, and belongs to the technical field of automatic driving. The system comprises a vehicle and the unmannedaerial vehicle; the unmanned aerial vehicle collects lower obstacle information; the unmanned aerial vehicle is further configured to determine an azimuth angle of the obstacle relative to the vehicle according to the lower obstacle information; and the unmanned aerial vehicle is further configured to send the azimuth angle to the vehicle for enabling the vehicle to increase a collection frequency of a vehicle-mounted radar corresponding to the azimuth angle to a preset high frequency higher than an initial preset frequency according to the azimuth angle, and meanwhile, identify a vehicle shot image which is currently shot by a vehicle-mounted camera and corresponds to the azimuth angle in preference to other vehicle shot images, so that the obstacle which is shielded or relatively remoteis detected by the unmanned aerial vehicle in advance, and the vehicle is controlled to take corresponding measures in advance. The vehicle can selectively perform key monitoring on the azimuth angleof the obstacle, so that the possibility of collision is reduced, and the safety of the vehicle is improved.

A method for wireless LAN communication using multiple channels is provided. An ATIM containing channel information is generated when there is data to be sent, and the ATIM is transmitted via a main channel after a predetermined period of time. When a station loses a channel reservation competition, the station generates and transmits via the main channel another ATIM containing channel information regarding another channel to be used from data transmission. The station then performs channel switching to the other channel corresponding to the channel information, transmits the data via the other channel, and switches the channel back to the main channel at the time of a subsequent beacon.

The invention relates to a train protection system and method based on laser detection. The train protection system comprises a laser sensor module used for emitting laser pulses to the front side of a current train and receiving echo pulse information, an electronic map positioning module used for acquiring the current position of the train, information whether the train is located at a curve and curve curvature information when the train is located at the curve, an information acquisition and storage module acquiring and storing the above echo pulse information in real time, and a data processing and analysis module used for acquiring distance measurement data, the current position of the current train and/or the curve curvature information to adjust the running speed of the current train. By the adoption of the system, only corresponding equipment needs to be installed at the front portion of the train, ground equipment does not need to be installed on each station, dependence on the normal working states of other trains is not needed, the occupied train-mounted space is small, and installation is easy and convenient. Meanwhile, the system can serve as an auxiliary system for an ATP system, the train collision possibility is reduced, and the train traveling safety is improved.

The utility model relates to a small water surface garbage cleaner. It includes a catamaran, a garbage storage box, a garbage collection device, a wireless video transmission module, an infrared obstacle avoidance module, a first motor, a second motor, a propeller, a controller, a garbage drainage filter plate, a solar panel, and a storage battery; the present invention Effect: Through video transmission, the garbage separation situation on the water surface in the distance is presented to the staff, making the cleaning more efficient. The infrared obstacle avoidance module can minimize the possibility of collisions during the working process of the garbage cleaner, avoiding damage to the garbage cleaner, causing unnecessary losses, and affecting the efficiency of garbage cleaning. Through the function of the brush, the remaining garbage on the garbage collection device is cleaned, falls on the garbage drainage filter plate, and finally stored in the garbage storage box, which can prevent the garbage on the garbage collection device that has not been stored in the garbage storage box from falling into the water again.

The embodiment of the invention discloses an automatic lane changing collision avoidance control method and device, a vehicle and a storage medium. The method comprises the steps that when lane changing operation is conducted, self-vehicle driving parameters, target vehicle driving parameters and road information are obtained; advancing collision safety detection time, back-off collision safety detection time and a lane changing virtual action line are determined according to the own vehicle driving parameters, the target vehicle driving parameters and the road information; and when it is detected that lane changing is abnormal, a collision avoidance strategy is determined according to the position relation between the vehicle and the lane changing virtual action line, the advancing collision safety detection time and the returning collision safety detection time, and the vehicle is controlled to execute the collision avoidance strategy. According to the technical scheme of the embodiment of the invention, the problem that the collision avoidance strategy with the lowest risk is difficult to determine when the vehicle encounters the abnormal lane change condition in the automatic lane change process is solved, the possibility of collision when the vehicle automatically changes the lane is reduced, the severity of collision under the condition that collision cannot be avoided isreduced, and the driving safety of the vehicle is improved.

The invention discloses an Ad hoc network route discovery method based on Brownian motion, and the Ad hoc network route discovery method based on Brownian motion aims to reduce the routing overhead of a network with the help of the thought of combining history record orientation and probability forwarding. According to the method, a mobile network model based on Brownian motion is built, and the distribution rule of intermediate nodes which have met a targeted node is found and summarized; a calculation formula of probability of intermediate node forwarding is designed according to the distribution rule and the network environment; whether the intermediate nodes participate in forwarding or not is determined according to the forwarding probability, and routing between a source node and the targeted node is built. Based on the directional broadcasting, the routing algorithm reduces the density of the intermediate nodes which participate in forwarding, and is simple and low in consumption.

The invention discloses a co-location construction method for a satellite queue, and belongs to the technical field of satellite queues. The satellite queue comprises a first satellite and a second satellite, so that the technical problem about how to increase the number of the satellites capable of being contained by an earth stationary orbit is solved. The co-location construction method for the satellite queue includes the steps that a satellite queue model is established, and the satellite queue comprises the first satellite and the second satellite which are located on the south side and the north side of the earth stationary orbit face respectively and are relatively stationary; an initial parameter set of the satellite queue is set; combined with the set initial parameter set and the established model, the spatial distribution of the first satellite and the second satellite in the satellite queue is determined.