146results about How to "avoid collision" patented technology

The present invention is related to a statistical multiplexing method and apparatus using a multi-dimensional orthogonal resource hopping multiplexing method in a wired/wireless communication systems where a plurality of communication channels, which are synchronized through a single medium, coexist. The present invention, in order to implement a generalized statistical multiplexing communication system using a multi-dimensional orthogonal resource hopping multiplexing method, comprises a multi-dimensional hopping pattern generator which is located in the primary communication station, a data symbol modulator that modulates data symbols based on the corresponding orthogonal resource hopping pattern generated by said multi-dimensional hopping pattern generator, a collision detector and controller that detects whether a collision occurs or not between the multi-dimensional hopping patterns and compares the consistency of the data symbols toward the secondary communication stations between said collision interval, a transmission power controller that controls the transmission power of the remaining parts excluding the parts where the multi-dimensional hopping patterns collide and the transmission is stopped due to transmitting data symbol inconsistency and compensates for the loss in the average reception energy due to a transmission stoppage.

Refresh of memory cells is performed periodically by a refresh timer, and collision between memory access and memory refresh is avoided. When memory access occurs, an F/F 163 is set by a one shot pulse from an OS circuit 161, a memory access request is inputted to a memory accessing pulse generator circuit 171 through a NOR gate 167, and a latch control signal LC and an enable signal REN are outputted. When a refresh request from the refresh timer is inputted to an AND gate 168 during the memory access, the output of the NOR gate 167 is at the “L” level, and the refresh request is blocked by the AND gate 168. Thereafter, at the time when the latch control signal LC is turned into the “L” level, F/Fs 163, 164 and 165 are reset, the output of the NOR gate 167 is turned into the “H” level, the refresh request is inputted to a refreshing pulse generator circuit 170, and a refresh enable signal RERF is outputted.

The invention relates to a technology of remote monitoring of tower crane security, in particular to a method and device for preventing collision in the tower crane cluster operation. The anti-collision device disclosed by the invention consists of a microprocessor module, an amplitude sensor, an angular sensor, a signal conditioning module, a keystroke input module, a voice alarm module, an RS232 module, a liquid crystal display and a ZIGBEE module; before the tower crane is subjected to anti-collision judgment, the microprocessor module acquires the tower crane information through the amplitude sensor and the angular sensor, and acquires the anti-collision information through the ZIGBEE module, and then omni-directional safety monitoring aiming at anti-collision in the tower crane cluster operation can be realized through the judgment of three given judging methods, thus collision accidents are effectively avoided.

Methods and apparatus are provided to prevent collisions between one drilling tool and another drilling tool during drilling operations. If the drilling tools reach a certain proximity to one another, a controller takes action to prevent a collision.

A system and method are provided to determine the collision status of a nearby vehicle or vehicles. If a nearby vehicle has been in a collision, responsive systems may be triggered automatically. Responses may include warning the driver of the host vehicle and/or warning drivers of other vehicles or centralized networks by, among other methods, V2V or V2I communications. Responses may also include automatically triggering countermeasures in the host vehicle.

A method and apparatus for avoiding a collision of an uplink preamble using a cell identifier. In a case of installing a new small-sized base station in a mobile communication system, the method and apparatus may set a code parameter, a time parameter, and a frequency parameter, differently from a neighboring small-sized base station using the cell identifier even when dedicatedly using a preamble in a contention-free scheme to avoid a collision of the preamble, so that a random access preamble may be managed without occurrence of the collision with the neighboring small-sized base stations.

A Bluetooth-enabled terminal having a radio manager for minimizing frequency collisions between channel hopping patterns transmitted over plural channels established between such terminal and correspondent Bluetooth devices is described. The radio manager extracts successive sets of projected future N—time slot segments of the respective Bluetooth channel hopping patterns. Each extracted set is tested to detect a time slot, if any, where frequency hops of the segments of the set coincide, indicating a frequency collision. When a collision time slot is detected, the radio manager generates a marker which triggers an alteration of the frequency hops that would otherwise be exhibited by a subset of the generated channel hopping patterns in such detected time slot. Such terminal may optionally be provided with an additional network interface to define a collision-resistant Bluetooth access point.

The invention provides a method for inhibiting Bluetooth interference in WIFI (wireless fidelity) communication. The method is characterized in that an RTS/CTS mechanism in an 802.11 protocol is modified, and in addition, a self-adaptive packet selection mechanism is adopted, so a Bluetooth micro network node senses the existence of the WIFI communication and carries out back return, meanwhile, a WIFI data packet is dynamically divided so that the WIFI obtains better transmission performance under the Bluetooth interference. The method provided by the invention has the advantages that the receiving rate of the WIFI data packet under the Bluetooth interference can be improved, and in addition, the collision probability (the time overlapping and the frequency overlapping) between the WIFI data packet and a Bluetooth data packet can be reduced, so the method can be preferably applicable to the WIFI communication under the complicated signal interference.

The invention provides a vehicle-mounted car-backing simulation system comprising a vehicle-mounted navigating instrument arranged in a car and a wide-angle camera arranged at the tail of the car and also comprising a speed sensor and an analog-to-digital conversion module which is connected between the wide-angle camera and the vehicle-mounted navigating instrument; the vehicle-mounted navigating instrument comprises an image processing module, an MCU (Microgrammed Control Unit) control module and a display; the MCU control module is used for calculating the position of the car after a set time according to information on the speed sensor and the angle of a steering wheel under a car-backing mode; and the image processing module is used for analyzing and processing environment image information captured by using the wide-angle camera and digitally processed by the analog-to-digital conversion module, overlying the environment image information with the position of the car after the set time, which is calculated by the MCU control module, and simulating the motion curve of the car within the set time on the display. The vehicle-mounted car-backing simulation system can be used for simulating the motion curve of the car within several seconds according to the surrounding environment of the car as well as the car-backing speed and direction and enabling a driver to more intuitively know the car-backing condition and plays auxiliary car-backing and stopping roles.

Disclosed are a myoelectric prosthetic hand force tactile feedback method and a tactile feedback myoelectric prosthetic hand system. A three-dimensional force sensor is mounted on a wrist of a mechanical prosthetic hand, and a stress shaft of the three-dimensional force sensor is connected with a mechanical prosthetic hand base via a flange and senses stress conditions in directions of three axes of the mechanical prosthetic hand. After the three-dimensional force sensor receives three-dimensional force action, force signals are converted into voltage signals via a bridge principle, the voltage signals are inputted into a control module provided with a single chip microcomputer and a motor driving circuit, the single chip microcomputer acquires the voltage signals which are transmitted from the three-dimensional force sensor and stand for force action on an X axis, a Y axis and a Z axis, positive and negative directions of the voltage signals include directions of X+, X-, Y+, Y-, Z+ and Z-, corresponding pulse width modulation signals are outputted according to the voltage amplitudes in the six directions, namely measured magnitude of stresses in the six directions, and the motor driving circuit drives miniature vibrators in the corresponding directions, so that amplitudes of the vibrators are in direct proportion to the voltage amplitudes in the corresponding directions.

The invention provides a resource allocation method in wireless communication system, comprising the following steps: a, a base station sends group call resource information to all adjacent base stations with the same frequency; b, the base station receives group call resource information from all the adjacent base stations; c, the base station allocates wireless resource for the current call request according to the group call resource information of the base station and the adjacent base stations with the same frequency, the current wireless resources state and the current call request. The invention also provides a wireless communication system which correspondingly realizes the resource allocation. After adopting the invention, through interacting the group call resource information within the base station between base stations, the collision of the wireless resource can be avoided when reservation and allocation of the call resources are conducted; meanwhile, through reserving the group call resources, the needed resources can be rapidly allocated for new-arrival group request of the base station.

The invention discloses an ultrahigh frequency passive radio frequency identification reader which mainly comprises a frequency synthesizer, an up-conversion mixer, a down-conversion mixer and a receiving-transmitting separator, wherein the up-conversion mixer and the down-conversion mixer are connected with the frequency synthesizer; the receiving-transmitting separator is respectively connected with the up-conversion mixer and the down-conversion mixer. The ultrahigh frequency passive radio frequency identification reader is characterized in that the frequency synthesizer is also connected with a true-random number generator. The invention also discloses a frequency hopping method of the ultrahigh frequency passive radio frequency identification reader. The true-random number generator is used for controlling frequency hopping, and a working channel of each frequency hopping is decided by the true-random number generator. Because a true-random number is not generated by calculating by an algorithm but comes from physical randomness, the true-random number has unpredictability. The invention effectively overcomes the defect that an ordinary ultrahigh frequency passive radio frequency reader adopting a pseudo-random number frequency hopping is easy to be inimically tracked and interfered.

The present invention provides an animal electronic identification remote sensing amplification device, which can read the information in the implanted or plug-in animal electronic identification and transmit the information by short-range wireless technology. The device comprises a built-in fitment which fixes the whole device on an animal as well as a main control chip, an animal electronic identification reading module, a wireless data transmission module for transmitting the animal information identified and a power module which are arranged in the built-in fitment; a interlock mechanism is arranged on the belt body of the two ends of the built-in fitment; a switch for controlling the power module and the working state is positioned on the interlock. Without getting close to the animal, the remote sensing amplification device can read the information content of the electronic identification on the animal, and provide a more convenient device for the user who applies the animal electronic identification to do management to read the electronic identification conveniently, thereby improving the convenience of the electronic identification in the actual use, saving the manpower, increasing the working efficiency and improving the application value of the animal electronic identification.

One example of a solution provided here comprises: identifying a location of one or more animals that are on a path to collide with a vehicle or device; directing millimeter-wave electromagnetic energy toward the location; and administering an effective amount of the electromagnetic energy to repel the animals. Another example comprises: identifying a location of one or more animals that are in a vehicle's path; directing millimeter-wave electromagnetic energy toward the location; and administering an effective amount of the electromagnetic energy to repel the animal, thereby avoiding a collision between the animal and the vehicle. The vehicle could be an aircraft, for example, or another kind of vehicle. Examples in the aviation context involve moving birds or mammals away from runways and taxiways, or otherwise repelling birds that are in the path of an aircraft.

The invention provides a sheet glass carrying rack which is simple in structure and convenient to control, can press glass tightly and carry glass stably, is high in safety factor and can prevent tilting. The sheet glass carrying rack comprises a bottom rack; rolling wheel devices are arranged at the lower end of the bottom rack; a rear stand rod slanting rearward is fixed to the center of the rear end of the bottom rack; side racks perpendicular to the bottom rack are arranged on the two sides of the bottom rack; the side racks are provided with rubber toothed bars; the rear stand rod is provided with a slider capable of sliding along the rear stand rod; the rear end of the slider is provided with a locating threaded hole and a locating bolt penetrates the locating threaded hole to lock the slider to the rear stand rod tightly; the front end of the slider is fixedly connected with an upper pressing rod parallel to the bottom rack; the upper pressing rod is sleeved with a pressing slider capable of sliding along the upper pressing rod; the upper end of the pressing slider is provided with an adjusting threaded hole; an adjusting bolt penetrates the adjusting threaded hole to lock the pressing slider to the upper pressing rod tightly; the rear side of the lower end of the pressing slider is provided with a pressing block.

The invention relates to the technical field of robot safety work control, in particular to a method of robot safety work control. According to the method, a movement model of the robot and the movement model of an operator are established through the method of the robot safety work control, and a dynamic safe working distance in a moving process of the movement model of the robot and the movementmodel of the operator is obtained; in a working process of the robot, a three-dimensional motion posture of the operator is collected, then the dynamic working distance between the operator and the robot is obtained, whether the dynamic working distance is smaller than the dynamic safe working distance or not is judged; and if yes, the robot is controlled to stop working so as to prevent the robot and the operator from colliding with each other, so that the occurrence of safety accidents can be greatly reduced.

A method of moving a virtual articulated object in a succession of individual movements in a virtual environment, the articulated object being specified in said environment by a global position, a global orientation, and a plurality of joint angles defining the positions of a set of articulated elements making up said articulated object with a plurality of degrees of freedom, the method comprising the following steps: calculating an interaction distance between the articulated object and its environment; extracting from said interaction distance a first point belonging to one of the elements of the articulated object, and a second point belonging to the environment; defining a single extraction vector from said first and second points; and moving the articulated object away from its environment by a movement defined as a function of the single extraction vector and acting on the global position, and/or the global orientation, and/or the degrees of freedom of the articulated object so as to avoid a collision between the articulated object and the environment.

The invention discloses a double protection control method for the upward coiling process of a steel coiling vehicle. An encoder is mounted on a wheel shaft of a wheel of the steel coiling vehicle; a displacement sensor is arranged in a lifting hydraulic cylinder; the specific control process is that a first link is in lifting operation, the lifting displacement of a steel coiling saddle is monitored and the condition that the height of a steel coil central line is in a safety range all the time can be guaranteed; a second link is in the transverse movement process and the drive torque of a travelling drive motor is monitored; any one of the lifting displacement or the drive torque exceeds a prewarning value, a control system sends out an alarm signal, and meanwhile, an execution mechanism stops an action of the lifting hydraulic cylinder or the travelling drive motor. According to the method, a double-protection measure is adopted, so that the normal operation of the upward coiling process is guaranteed, a steel coil is effectively prevented from being collided with a coil barrel, and the normal running of a production line is guaranteed.

The present invention provides a graded braking control device and control method for vehicle tire burst, and belongs to the technical field of vehicles. It solves the problems of rear-end collision and more instability of the vehicle resulting from emergency brake after vehicle tire burst. The device includes a tire pressure sensor, a controller, a radar sensor, a stability detection module and an ESC, wherein the radar sensor and the stability detection module are respectively connected with input ends of the controller, the tire pressure sensor is in wireless connection with the controller, and the ESC is connected with an output end of the controller. The control method includes: 1. monitoring vehicle tire condition; 2. carrying out traffic state assessment and determining a first maximum braking deceleration value for preventing the rear-end collision with the follower vehicle after emergency brake of the present vehicle; 3. carrying out tire burst vehicle stability state assessment in combination with the current speed and setting the maximum braking deceleration under stable state; and 4. carrying out tire burst graded braking. The device and the method can ensure quick and stable braking of the tire burst vehicle, and avoid the rear-end collision of the present vehicle with the follower vehicle.

The invention belongs to the technical field of medical apparatus cleaning device, and more specifically relates to an operating knife high-efficiency cleaning and disinfecting device. The operating knife high-efficiency cleaning and disinfecting device comprises a cylindrical box body, a motor, a rotating shaft 1, a shaft coupler, a rotating shaft 2, an ultraviolet ray disinfection unit, a cleaning unit, and a drying unit; the motor is arranged on the bottom of the cylindrical box body; the rotating shaft 1 is arranged on the motor; the shaft coupler is used for controlling connection of therotating shaft 1 with the rotating shaft 2; the ultraviolet ray disinfection unit is used for disinfection of operating knifes; the cleaning unit is used for cleaning of operating knifes; the drying unit is used for drying of operating knifes. The operating knife high-efficiency cleaning and disinfecting device is mainly used for cleaning, disinfecting, and drying of operating knifes, is comprehensive in functions, is simple, is capable of protecting operating knifes as far as possible, avoiding injury caused by artificial cleaning, and reducing labour amount of medical staff.

The invention discloses an integrated navigation method of a crab pond automatic working ship based on information fusion of a low-precision GPS, a laser ranging sensor and an orientation sensor, thereby realizing navigation of the crab pond automatic working ship. According to the navigation mode of the automatic working ship, an internal spiral path that starts with a certain point, is parallelto the pond embankment and is arranged at a certain travel interval is used. According to the invention, a low-precision GPS system determines the location of an inflection point of a navigation trackand a track course; an orientation sensor determines the motion direction of a current automatic working ship; and a laser ranging sensor determines a distance between the automatic working ship anda near-side pond embankment. On the basis of the distance between the working ship and the pond embankment, certain mathematical calculation is performed by combining a current course angle to obtaina difference between a current course angle and a desired course angle; an angle deviation value is introduced into a paddle wheel motor drive control system; a generated rotating speed difference between left and right paddle wheels is adjusted by a PD control method to realize the course controlling of the working ship, so that the navigation of the crab pond automatic working ship is realized.

The invention discloses a centering device used during guide rail conveying. The centering device comprises a fixed base, a first swing arm, a second swing arm, a telescopic drive device and guide rollers; the rear end of the first swing arm and the rear end of the second swing arm are each provided with a first rotating shaft pointing to the fixed base downwards, and are each provided with a second rotating shaft pointing to the upper portion, the guide rollers are arranged on the second rotating shafts, and the first rotating shafts are correspondingly sleeved with gears; and through the manner, according to the centering device used during guide rail conveying, the telescopic drive device carries out telescopic operation to drive the first swing arm or the second swing arm to swing, meanwhile, the first swing arm and the second swing arm are engaged through the gears to synchronously move, the included angle between the first swing arm and the second swing arm is changed, the distance between the two guide rollers is changed also, the centering device is suitable for guide rails of different widths, before the guide rails are centered, the distance between two guide rollers is increased, and impact of the guide rails is avoided.

The embodiment of the invention provides an automatic parking method and device. The method comprises steps of determining the target parking position information of a to-be-parked parking space in anautomatic parking process, determining the obstacle position information corresponding to an obstacle when the obstacle is detected to exist in the to-be-parked parking space, and carrying out the automatic parking of the to-be-parked parking space according to the obstacle position information; the obstacle attribute information corresponding to the obstacle being acquired, and the target parking position information being updated according to the obstacle position information and the obstacle attribute information so as to perform automatic parking according to the updated target parking position information. The method is advantaged in that the target parking position information is updated according to the attribute and the position of the obstacle, collision between the vehicle and the obstacle during parking is avoided, safety and stability of parking are improved, and the driving experience of a user is improved.

The invention discloses an integrated system for monitoring the operation of a subway tunnel cleaning vehicle and a method for the same. The system comprises a plurality of cameras; the cameras are at least mounted a head, a tail and an underbody of the cleaning vehicle; the cameras are also connected with a power supply module; the cameras are used for acquiring video information in a subway tunnel and transmitting the video information to a video server; the video server sends the acquired video information into a monitor for display; and the power supply module, the video server and the monitor are all mounted in an operating room of the cleaning vehicle. The integrated system and the method are convenient for an operator to timely find obstacles in an operation area, collision is avoided, and moreover, the operator can clearly observe a cleaning effect of the operating vehicle.

A method of communicating with an embedded controller is disclosed. The method is adapted for an Advanced Configuration and Power Interface specification (ACPI). According to the method, a busy flag is set in the status register of the embedded controller. While the Operating System Power Management handler (OSPM) accesses the embedded controller, the busy flag is set with a busy state value. When the OSPM finishes accessing the embedded controller, the busy flag is set with a non-busy state value.

The invention discloses a vehicle control method. The method comprises the following steps: acquiring position information of a vehicle and a navigation path corresponding to the vehicle; based on theposition information and the navigation path, determining whether the vehicle is driven into a preset restricted area or not; if the vehicle is driven into a preset limiting area, determining whethera moving obstacle exists in a preset detection area corresponding to the preset limiting area or not; and if the moving obstacle exists in the preset detection area, adjusting operation parameters ofthe vehicle based on preset parameters. The invention further provides a vehicle control device and a computer readable storage medium. According to the invention, advanced speed reduction of the vehicle is realized, flexible control of the vehicle at a low speed is further realized, and when a moving obstacle exists in a navigation path of the vehicle, the vehicle can timely execute obstacle avoidance operation, collision is avoided, and the driving safety of the vehicle is improved.

The invention discloses engineering machinery, and a control system, a method and a device of an arm support of the engineering machinery. The control system, the method and the device can improve the operation safety of the engineering machinery. The control system of the arm support comprises a high-voltage sensor and a controller, wherein the high-voltage sensor is mounted on the arm support of the engineering machinery, is used for detecting an electrical signal around the arm support, and outputs a signal value according to the strength of the detected electrical signal; the stronger the electrical signal detected by the high-voltage sensor is, the larger the output signal value is; the controller is used for acquiring the signal value output by the high-voltage sensor, and controls a movement direction of the arm support according to the signal value output by the high-voltage sensor; and when the arm support moves to one direction, if the signal value output by the high-voltage sensor is increased along with the time and is greater than a preset alarm threshold, the arm support is controlled not to continuously move to the direction.

The invention discloses an anti-collision system for a telescopic working platform of a bridge detection vehicle. The system comprises the telescopic working platform which consists of a fixed truss part and a telescopic truss part matched with the fixed truss part and is characterized in that: the fixed truss part is provided with a fixed platform control box and a bus connector I which is connected with the fixed platform control box and a controller area network (CAN) bus in a pull box; both sides of the lower part of the fixed truss part are provided with eight bus branch connectors and eight ultrasonic sensor nodes I; each ultrasonic sensor node I is provided with an ultrasonic sensor I; the fixed platform control box is connected with a main controller of the bridge detection vehicle; a telescopic truss part I is provided with a bus connector II; and the bus connector II is connected with the CAN bus which is arranged in the pull box on the fixed truss part. The system has the advantages of stable and reliable anti-collision function, simple circuit and easiness and convenience of maintenance; and due to the adoption of the ultrasonic sensor, the system has the advantages ofeasiness of information processing, high speed and low price.

The invention provides a novel and simple water-hammer eliminating device. The device comprises a water conveying pipe, a pipe valve and a protection box arranged on the pipe. A penetrating hole is formed between the protection box and the pipe and arranged in a water inlet of the pipe valve. A pressure operated valve is arranged in the penetrating hole and opened and closed through water pressure. The pressure operated valve is of a rectangular plate, and a pressure operated valve shaft or a hole allowing a valve through shaft to penetrate through is formed in the two sides of the position atone third of the length of the pressure operated valve. The two ends of the pressure operated valve shaft or the through shaft are fixed into the protection box and perpendicular to the portion, corresponding to the pressure operated valve shaft or the through shaft, of lower end of the side wall of the pipe. Water flowing cyclically through an impeller exists in the protection box. The novel andsimple water-hammer eliminating device has the beneficial effects that the structure is simple, implanting is easy, the problems that in a pipe closed system, the water flowing velocity is suddenly dropped due to certain external reasons such as sudden closing of the valve, and water-hammers damage the pipe are solved, the service life of the pipe is prolonged, and the pipe materials are saved.

The invention provides a push-type door opener with damper and a push-type door opening anti-collision implementation method. The push-type door opener comprises a shell, a push rod, an elastic element used for pushing the push rod to move towards the outside of the shell and a push rod limiting device. The outer wall of the push rod is provided with a convex edge. The linear damper is arranged the convex edge on the push rod and the first end of the shell. The push-type door opening anti-collision implementation method comprises the steps that the push-type door opener is arranged in the position, opposite to the inner surface of a door, of a door frame; the push-type door opener is internally provided with the linear damper; when the push rod of the push-type door opener is popped outwards, the push rod makes contact with the linear damper, and compression to the linear damper is increased gradually; the push rod is popped out slowly under the action of counter acting force of the linear damper to the push rod, so that collision between the door and the push rod is avoided. By adopting the push-type door opener with damper and the push-type door opening anti-collision implementation method, collision between the door and the push rod can be avoided, and noise generated from collision can be avoided.