118results about How to "Eliminate Collisions" patented technology

A system and method of providing distributed election of a shared transmission schedule within an ad hoc network. The invention includes a collision-free access protocol which resolves channel access contentions for time division multiple access (TDMA) of a single channel. Time-slots are organized into part numbers, which are included within sections, a sequence of which define a block. Each node is given a ring number according to its location within the network topology and maintains local neighbor information along with its own part number and message digest. Collision-free channel access is automatically scheduled and repetitious contention phases are resolved by a random permutation algorithm operating in message digests. An empty time-slot utilization method is also described and data packets may also be transmitted subject to a non-zero collision probability within a blind section of the block.

An autonomous vehicle collision / crossing warning system provides for simple, inexpensive and decentralized installation, operation and maintenance of a reliable vehicle collision / crossing warning system. The autonomous warning system preferably utilizes a single frequency TDM radio communication network with GPS clock synchronization, time slot arbitration and connectionless UDP protocol to broadcast messages among vehicles and components in the warning system. Adaptive localized mapping of components of interest within the warning system eliminates the need for centralized databases or coordination and control systems and enables new vehicles and warning systems to be easily added to the system in a decentralized manner. Preferably, stationary warning systems are deployed as multiple self-powered units each equipped to receive broadcast messages and to communicate with the other units by a low power RF channel in a redundant Master-Slave configuration. The communication schemes are preferably arranged for low duty cycle operation to decrease power consumption.

The invention discloses a robot collision detecting system and method, a storage medium and an operation system. The collision detecting system comprises a motion instruction module, a dynamic module,a state feedback module and a collision predicating module, wherein the motion instruction module is used for performing motion control on a robot; the dynamic module is used for performing dynamic modeling and system identifying on the robot according to characteristics of the robot, and solving a dynamic equation; the state feedback module is used for obtaining position data, speed data and force moment data of each joint of the robot; and the collision predicating module is used for predicating collision external force, a force acting point and a collision type according to the robot dynamic equation, and the position data, the speed data and the force moment data of each joint of the robot. Based on collision detection of current ring feedback, the robot collision detecting system canreduce complexity and cost of a robot structure, can detect whether a user collides or not when the robot works, and safety of the user when the robot and the user are effectively guaranteed to be cooperatively work.

A computer implemented method for identifying and linking a data originator and a data file or data batch from the originator through one or more data source systems. The system stores the data files and batches on a permanent basis for subsequent verification purposes, verifying the identity of the data file originator through originator-specific information from the data source system; and generating unique data entries associated with the originator identity, the file identity and / or a file verification cryptographic digest, and a unique originator signature. The data entries and signature are stored in encrypted form in a Relay Access Table (RAT), as are the public and private keys associated with both the data file and the originator. A certificate for verification of the data file is generated, that contains a digital signature, as well as a file cryptographic digest and metadata associated with filing conditions.

An autonomous vehicle collision / crossing warning system provides for simple, inexpensive and decentralized installation, operation and maintenance of a reliable vehicle collision / crossing warning system. The autonomous warning system preferably utilizes a single frequency TDM radio communication network with GPS clock synchronization, time slot arbitration and connectionless UDP protocol to broadcast messages among vehicles and components in the warning system. Adaptive localized mapping of components of interest within the warning system eliminates the need for centralized databases or coordination and control systems and enables new vehicles and warning systems to be easily added to the system in a decentralized manner. Preferably, stationary warning systems are deployed as multiple self-powered units each equipped to receive broadcast messages and to communicate with the other units by a low power RF channel in a redundant Master-Slave configuration. The communication schemes are preferably arranged for low duty cycle operation to decrease power consumption.

The invention discloses a method for accessing user equipment into network equipment, which comprises the following steps: A. a network side, according to user access types of user equipment, sends access information to the user equipment; the information comprises configuration information of corresponding access signal channel resources; B. the user equipment, based on the configuration information of the access signal channel resource, is connected to the network equipment in a corresponding access signal channel. The method solves the problems of high resolution and low success rate in the prior art when district switching is carried out to the user equipment. A system for accessing user equipment into network equipment is disclosed either.

The invention relates to a conflict-free, on-demand multiple access method, comprising: central control node announces collisions of node-sent reserved access packets have occurred and starts up conflict resolution stages, where each conflict resolution stage comprises several forecast burst and forecast confirm micro time gaps set in sequence; in the forecast burst micro time gap, each access conflicting node monitors or sends forecast burst packet according its virtual ID number, and the central control node receives the forecast burst packets; in the following forecast confirm micro time gaps, the central control node sends the results, and each access conflicting node monitors the results; after a node succeeds in access, the central control node sends result broadcast packet. And the invention can assure access conflicting nodes quickly connect to channel and obtain the channel use right and increases service packet transmitting time as far as possible, and increases the throughput of channel.

A device for ultrasonic strain imaging computes displacement of tissue between a pre-deformation and post-deformation data set along columns to provide for independent calculations that may be parallelized for multiprocessor systems.

Disclosed herein is a data communications system configured to execute data communication between three parties of a reader / writer, an integrated circuit card wirelessly communicable with the reader / writer in a non-contact manner, and an information processing terminal connected to the intergraded circuit card via a wired interface, the data communications system including: the reader / writer having a read / write wireless control block; the integrated circuit card having an integrated circuit card wireless control block; and the information processing terminal having a request acceptance block, a data storage block, and a data transmission block.

The present invention discloses a no-collision spring steel ball safety clutch, which has the characteristics of no overload impact or no collision, high rotating speed, simplicity and reliability, easy manufacture, and long service life. The present invention is characterized in that the no-collision spring steel ball safety clutch is provided with a blocking embedding mechanism preventing a steel ball embedding mechanism from being embedded under the overload condition, the mechanism on the axial direction is positioned in the steel ball embedding mechanism, and the mechanism on the radial direction is positioned in the steel ball embedding mechanism or outside the steel ball embedding mechanism; a lift angle of both sides blocking the working surface is formed to enough ensure the friction self-locking collided on the both sides and the stability of the blocking operating condition, in order that the lift angle has the capabilities that the adaptive axle base is changed and the abrasion is automatically compensated; no collision characteristic of the overrunning operating condition of the two embedding mechanisms, and the separating block of the blocking embedding mechanism and the absolute reliability of the embedding return process are maintained for a long time. After the overload separation, the positive rotation or negative rotation which is simple and convenient can evenly realize the embedment replacement of the clutch automatically.

A transmission schedule is overlaid on the Ethernet protocol to allow use of this readily available high speed protocol for transmission of I / O data communicated in an industrial control environment and requiring a high degree of determinism. Scheduling improves load leveling and bandwidth utilization and by producing a more consistent delay may be teamed with time synchronization to produce more accurate clock synchronization.

A fork-lift reach truck having an extraction mast which is adapted to be displaced, by means of a mast drive, towards and away from a driving portion of the fork-lift truck on a horizontal guide, a load-carrying means which is mounted on a side shift, a side shift guide which is supported by the extraction mast in a height-adjustable way and is adapted to be actuated by means of a lifting and lowering drive, which guides the side shift in a laterally movable way, and a side shift drive, and an electric control and regulation device for the respective drives which is connected to operating members for the lifting and lowering modes, the mast extraction mode, and the side shift mode, wherein an analog sensor detecting the position of the side shift is provided the position signal of which is sent to the control and regulation device, and that the control and regulation device is connected to a separate operating member for the side shift or the operating member for the side shift is configured in such a way that actuating it causes the side shift to be automatically moved to a predetermined position.

A system and / or methodology that enables schema motion and “just-in-time” installation thereof. Aspects of the invention employ signing technology to facilitate secure definition of schema data. These public key technologies can also be employed to facilitate verification of the document (e.g., schema) received at a destination.

A movable Tower Inventory System which contains a number of RFID antennas mounted vertically along the tower. The Tower Inventory System is the moved along the front of storage racks to acquire information from RFID tags affixed to assets positioned on the storage rack. This information enables the determination of the x, y and z location values for each unique RFID number stored in the RFID tags.

The related asynchronous interactive multi-address accessing method comprises: a central node sets the basic access unit number and business group-transmission unit number according to the business condition, and sends the subscribe group for startup; all nodes requiring group- transmission compete in time slot, and the central node counts collision condition and sends the subscribe-start group to distribute the successful access result, and prompts the next time slot; repeating till all basic access units end; the central node sends business groups or polling-control group and prompts the follow-up successful node to transmit business group till all successful node end, and goes into next stage. This invention has large channel throughput, small access time delay, low abandoning rate, and well service quality.

An improved antenna arrangement and synchronization system for use when multiple radio base stations, using a deterministic over the air MAC layer, are located within overlapping coverage areas is disclosed and more specifically the method described here discloses an improved antenna and coordination arrangement for use at the base station which will eliminate over the air collisions while doubling the effective data rate of each base station. The result being large area networks which all share exactly the same radio spectrum without mutual interference and with little effort required to expand a single base station system into a grid of cooperative base stations forming a coverage area of ubiquitous coverage and multiplied data capacity.

The master arm includes two parallel branches (1, 2), preferably symmetric, joining together at a control wrist (7). The branches are formed of segments (3, 4, 5, 6), the first (3) of which extend from a common base (8), and moving away from the base such that the branches move apart from each other and prevent the appearance of kinetic singularities.

The present invention is automatic vehicle blocking and obstacle eliminating system for unattended railway crossing and its usage. The system includes control mechanism connected to warning alarm mechanism, vehicle blocking unit and conveyer belt mechanism. The sensor of the control mechanism is matched with railway to receive train running signal, the conveyer belt mechanism is set between andby railway tracks, there are isolating band outside the conveyer belt and vehicle blocking unit outside the isolating band, and the warning alarm mechanism has warning device set in proper location.When some train is near the crossing, the control mechanism sends out command, the warning alarm mechanism sends sound and light signal, the vehicle blocking unit becomes blocking state to block vehicles and passengers and the conveyer belt mechanism removes the vehicle and other matter from inside the crossing to ensure safety.

A wireless multiple access method allows multiple transmitters to access the same channels so that substantial interference occurs. The transmitters use low rate turbo coding and the receiver uses multi-user detection to separate and decode the transmissions. Different propagation and / or transmission characteristics between the transmitters help to distinguish the transmissions at the receiver. The transmitters may add random variation to their transmission timing, power and / or frequency to assist with decoding.

The invention relates to an impact-free gear shift control method and system for an electrically driven mechanical transmission without a synchronizer. The electrically driven mechanical transmission is provided with no synchronizer; a drive motor and the electrically driven mechanical transmission are directly coupled, and a clutch between the drive motor and the electrically driven mechanical transmission is omitted. An automobile controller determines the target gear and sends a gear shift instruction to a system coordinating controller; the system coordinating controller coordinates the working sequence and working mode of a dual target tracking controller and a rule-based controller, so that the drive motor and the electrically driven mechanical transmission are in coordinated fit to achieve gear shift; and by accurately controlling a motor rotor, a target joint gear ring accurately tracks rotation of a joint sleeve in the joint process, the requirements for zero rotation speed difference and zero rotation corner difference are met, and impact-free gear shift control is achieved. The method and system can eliminate collision between the joint sleeve and the joint gear ring in the joint process, then gear shift impact is restrained, and the power failure duration is shortened.

A method to transmit local area radio broadcast signals (38) that is coupled to wide area radio broadcast signals (39) is described. Local area radio broadcasting is used to transmit audio content from personal audio players into the audio of an automobile. Local area radio broadcast signals (38) are coupled to wide area radio broadcast signals (39) using time based or algorithm based time slot allocation methods. A personal audio player such as a smartphone (32) or a music player is enabled with a local area broadcast radio signal transmitter (53) that transmits radio signals into a desired channel (35) which may be occupied by a wide area transmitter (68). The local area transmission may be mutually exclusive or overlapping with wide area transmission. When overlapping, signal cancellation techniques may be used such that a signature signal from wide area broadcast station may be cancelled by local area broadcast.

The invention belongs to the technical field of renewable energy sources and micro-miniature power generation, and particularly relates to a two-degree-of-freedom electromagnetic energy harvester forconverting vibration and linear reciprocating motion into rotary motion. The device is characterized in that the device at least comprises a base, a rotor, a top cover, a spring, a rope, magnets, a coil, a radial bearing and ferromagnetic patches; the radial bearing is fixedly connected with a cylindrical shaft; the rotor is fixedly connected with the outer ring of the radial bearing; the two endsof the spring are fixedly connected with the top cover and the base respectively to support the top cover to move up and down; the plurality of groups of magnets are fixed to the rotor; and the two ferromagnetic patches are fixed on the outer cylindrical surface of a cylinder. When external excitation acts on the top cover, the rope drives the rotor to rotate, the magnets fixed to the rotor and the coil move relative to each other, and electric energy is continuously output through the electromagnetic induction principle. The energy harvester has the characteristics of being high in output power, wide in working frequency band, free of influence of the placing direction, wide in application range and the like.

The invention belongs to the field of guide blade structure design applied to sectional multi-stage centrifugal pumps, and particularly relates to a radial guide blade structure with a streamline structure. Forward guide blades are arranged on the disc face of a guide blade disc, backward guide blades are arranged on the back face of the guide blade disc, a forward flow pass and a backward flow pass are formed between every adjacent forward guide blade and backward guide blade. A notch portion penetrating through a disc body is formed in an outlet of the forward flow pass of the guide blade disc, the disc face, where the notch portion is located, of the guide blade disc, the outer blade faces of the forward guide blades, the peripheral surface of the guide blade disc and a guide face arranged opposite to the disc face, where the notch portion is located, of the guide blade disc jointly form a transition cavity, the appearance of the guide face is of a cambered surface structure, the center of curvature of the guide face of the cambered surface structure is located at the end, where the backward guide blades are located, of the guide blade disc, and the curvature radius of the guide face of the cambered surface structure from a water inlet end of the transition cavity to a water outlet end of the transition cavity is reduced gradually. The radial guide blade structure with the streamline structure can reduce ring currents, fluid collision and vortex situations generated in the transition section, energy loss can be restricted effectively, and working efficiency is higher.

The purpose of the present invention is to provide an energy-saving-operation recommending system that can calculate the energy consumption predicted to be consumed by the entire body of a rolling line, with high accuracy and with respect to a material to be rolled that is scheduled to be rolled next. The total energy consumption consumed by plurality of equipment during a step in which one material to be rolled is passed through the rolling line is calculated. The total energy consumption is divided by the width and the length of the material to be rolled prior to rolling, and energy consumption reference values, which define the energy consumption per width unit and length unit of the material to be rolled, are calculated. The energy consumption reference values are associated with the steel grade of the material to be rolled and the target post-rolling plate thickness, and stored. An energy consumption reference value that corresponds to the steel grade and target post-rolling plate thickness of the material to be rolled, which is scheduled to be rolled next on the rolling line, is acquired. The width and the length of the material to be rolled that is scheduled for rolling is multiplied by the energy consumption reference value, and an energy consumption prediction is calculated.

The invention relates to the technical field of internal combustion engines, in particular to a gas engine intake mixing cavity. The intake mixing cavity is arranged between a gas fuel and EGR mixingdevice and an engine intake elbow. The mixing cavity comprises a shell, and one or more core cover and core tube sets. The outer portion of the core cover and core tube sets is sleeved with the shell.Each core cover and core tube set comprises a core cover and a core tube, wherein the core tube is arranged in the core cover. The multiple core covers and the multiple core tubes are sleeved in sequence. The shell comprises a shell top plate, a shell bottom plate and a shell cover plate connected with the top plate and the bottom plate. Each core cover comprises a core cover top plate, a core cover shell and a connecting plate. The wall surface of each core cover and the wall surface of each core tube are each provided with a plurality of mixing holes. In the engine intake process, cylinderEGRs and gas mixed gas are more uniform in the mixing cavity, the difference, caused by air, gas fuel and EGR fluctuation, of the cylinder EGRs and the gas mixed gas is reduced, the operation consistency of cylinders of the gas engine is effectively improved, and the operation stability and reliability of the gas engine are improved.

The invention discloses a quick change floating tool for robot casting polishing. The quick change floating tool for robot casting polishing comprises a mounting plate, a tool plate, and multiple floating tools mounted on the tool plate; the detachable tool plate is mounted on the mounting plate; the floating tools comprise spring pressing plates, and positioning blocks fixed thereon; the spring pressing plates are mounted on the tool plate through floating mechanisms; and workpieces to be machined are positioned through the spring pressing plates and the positioning blocks. The floating mechanisms comprise bolts and springs; through holes for enabling the bolts to pass through are formed around the spring pressing plates; the tool plate is provided with thread holes corresponding to the through holes; the bolts are sleeved with the springs after penetrating through the through holes, and are tightened in the thread holes; the bolts are locked on the tool plate through locking the nuts; and the spring pressing plates can move up and down through the springs. As the workpieces are positioned and clamped on the floating tools, when the workpieces are taken and placed, the damage to grippers and the workpieces caused by direct contact of robot grippers and the workpieces can be effectively reduced, and huge economical benefits can be gained for enterprises.

The invention relates to a bistable contactless magnetic vibration energy capture device comprising a plurality of bistable piezoelectric sleeves (1). Each bistable piezoelectric sleeve (1) has two stable states including a raised state and a recessed state; first permanent magnets (4) are arrange on the outer walls of the bistable piezoelectric sleeves (1), and the bistable piezoelectric sleeves (1) are mounted on the outer wall of an inner cylinder (5) in a sleeving manner; a plurality of magnetic sleeves (6) sleeve the bistable piezoelectric sleeves (1), are coaxial with the bistable piezoelectric sleeves (1) and are mounted on the inner wall of an outer cylinder (7); second permanent magnets (8) are embedded in the magnetic sleeves (6), and the pole directions of the second permanent magnets (8) embedded in adjacent magnetic sleeves (6) are opposite. The bistable contactless magnetic vibration energy capture device has the advantages that vibration energy is captured through switching between the recessed stable state and the raised stable state of poles due to vibration of the bistable piezoelectric sleeves, collision and friction energy losses can be eliminated in a contactless mode under the action of magnetic force, and accordingly, energy capture is improved.