31results about How to "Avoid excessive collision" patented technology

A method for allocating transmission channels to devices configured to communicate short data packets to a diversity of non geostationary satellites is disclosed hereby. The method suggests a dynamic cellular partitioning of the earth surface, based on the smallest intersections of overlapping satellite service areas (“footprints”), defined as mega-cells, and reusing channels in different mega-cells. In addition, a transmission cycle is defined and divided to time slots, synchronized at each device by GPS timing signals, and mega-cells served by more satellites are allocated with fewer time slots, in order to increase the chance of transmitters placed in mega-cells served by fewer satellites to be detected. Further, each mega-cell is divided to cells, and different channels and time slots are allocated to each cell, from those allocated to the corresponding mega-cell. Consequently, collision of transmissions from different mega-cells is reduced, and collision of transmissions from different cells in a mega-cell is avoided.

Determining and simultaneously using a base station coupled to a mobile device, the base station comprising a detector for receiving a first identification signal corresponding to a first module and a second identification signal corresponding to a second module from the mobile device. A transmitter for sending a plurality of signals to the mobile device, said plurality of signals is configured to set up communication between the mobile device and the base station. A receiver for receiving a plurality of parameters for determining whether the second module is able to attach to the base station; and a processor for connecting the first and second module in the mobile device to the base station simultaneously in response to a plurality of slots by time multiplexing and the plurality of parameters when the second module is acceptable by the base station, wherein said plurality of slots are determined by the base station.

A mass spectroscope includes an ion source for generating ions, a mass spectrometry portion, and an ion retention portion arranged between the ion source and mass spectrometry portion for storing, cooling and / or dissociating the ions before the ions are discharged into the mass spectrometry portion. The mass spectroscope further includes a flow adjusting device for adjusting a gas flowing into the ion retention portion from an outside, and a control device for controlling the flow adjusting device in order to appropriately set a gas pressure in the ion retention portion according to an operation mode such as an introducing operation, a retention operation, and a discharging operation.

Determining and simultaneously using a circuit for a mobile device couple to a base station, the circuit may comprise an identification signal detector for receiving a first identification signal corresponding to a first module and a second identification signal corresponding to a second module in the mobile device. The circuit may comprise a receiver for receiving a plurality of signals from the base station; said plurality of signals is configured to set up communication between the mobile device and the base station. The circuit may comprise a calculator for calculating a plurality of parameters in response to the first identification signal, second identification signal and said plurality of signals received from said base station. The circuit may also comprise a processor for attaching the first and second module to the base station simultaneously in response to a plurality of slots by time multiplexing and the plurality of parameters,

The present invention is a method and system for developing a dynamic scheme for Gamma Knife radiosurgery based on the concept of “dose-painting” to take advantage of robotic patient positioning systems on the Gamma Knife C and Perfexion units. The spherical high dose volume created by the Gamma Knife unit will be viewed as a 3D spherical “paintbrush”, and treatment planning is reduced to finding the best route of this “paintbrush” to “paint” a 3D tumor volume. Under the dose-painting concept, Gamma Knife radiosurgery becomes dynamic, where the patient is moving continuously under the robotic positioning system.

A method of manufacturing of power transmission chain 1 by interconnecting plural link plates 2 with pins 3. Individual pin pairs 3 are arranged and temporarily fixed to places. The link plates 2 are sequentially stacked in layers by press-fitting respective through-holes 4 of the link plates 2 about the respective pin pairs 3, whereby the link plates 2 are interconnected to form a circular chain (an endless loop). Subsequently, the individual pin pairs 3 are released from the temporarily fixed state. Thus, the manufacture of the power transmission chain 1 is decreased in the number of operation steps, so that the chain may be assembled easily.

A method of allocating frequency channels in a wireless communication system comprising commo n channel framework enabled stations, said method comprising: —using by said common channel framework enabled stations a common frequency channel at common time intervals in order to determine a communication frequency channel on which a pair of common channel framework enabled stations will be allowed to exchange data frames, —periodically changing the common frequency channel at the beginning of each common time interval.

The invention belongs to the technical field of hydraulic elements and discloses a thread plug-in mounting type load holding valve. A valve body is provided with an oil inlet, an oil outlet, a controloil opening and an oil unloading opening. A one-way valve element is located at the oil outlet and can move axially relative to the valve body. The lower end of a valve seat makes contact with the one-way valve element in a sealed manner. A flow control valve element is located in the valve seat and can axially move relative to the valve seat. An axial hole is formed in the lower end of the valveseat, and the lower end of the flow control valve element makes contact with the axial hole in a sealed manner. A control cavity is formed by the flow control valve element and the valve seat. A first spring is arranged in the control cavity and generates pressing force on the flow control valve element. A valve hole and a damping hole are formed in the flow control valve element, the damping hole communicates with the oil outlet and the valve hole, and the valve hole communicates with the oil unloading hole and the control cavity. The upper end of a pilot valve element forms a control oil cavity with the valve body and communicates with the control oil opening, and the lower end of the pilot valve element makes contact with the valve hole in a sealed manner. The thread plug-in mounting type load holding valve is easy to integrate and long in service life and has a safety overflow function and a micro moving function.

A method for allocating transmission channels to devices configured to communicate short data packets to a diversity of non geostationary satellites is disclosed hereby. The method suggests a dynamic cellular partitioning of the earth surface, based on the smallest intersections of overlapping satellite service areas (“footprints”), defined as mega-cells, and reusing channels in different mega-cells. In addition, a transmission cycle is defined and divided to time slots, synchronized at each device by GPS timing signals, and mega-cells served by more satellites are allocated with fewer time slots, in order to increase the chance of transmitters placed in mega-cells served by fewer satellites to be detected. Further, each mega-cell is divided to cells, and different channels and time slots are allocated to each cell, from those allocated to the corresponding mega-cell. Consequently, collision of transmissions from different mega-cells is reduced, and collision of transmissions from different cells in a mega-cell is avoided.

A method of manufacturing of power transmission chain 1 by interconnecting plural link plates 2 with pins 3. Individual pin pairs 3 are arranged and temporarily fixed to places. The link plates 2 are sequentially stacked in layers by press-fitting respective through-holes 4 of the link plates 2 about the respective pin pairs 3, whereby the link plates 2 are interconnected to form a circular chain (an endless loop). Subsequently, the individual pin pairs 3 are released from the temporarily fixed state. Thus, the manufacture of the power transmission chain 1 is decreased in the number of operation steps, so that the chain may be assembled easily.

A ceramic balancing control valve of a faucet includes a fixed valve pipe, a movable spool, two flow covers and two caps. The fixed valve pipe has a through hole, and each side of the pipe body engraves a conduction gap communicating with the through hole. The movable spool is located inside the through hole of the fixed valve pipe, and each side thereof has a concave groove compartment separated by a partition. Two flow covers are facing each other, and a flow channel is formed on an upper and lower portion of the flow cover corresponding to the conduction gap of the fixed valve pipe; and each caps has at least one circulation hole, and is located at an upper portion of the flow channel, so the water flowing into the flow cover is configured to flow out of the cap from circulation hole.

Methods and an appropriately setup communication unit for positioning in vehicle-to-surroundings communication are described, wherein the method involves a first sensor (S1) of a first communication subscriber using a transmission and reception unit to emit a challenge pulse, to which a transmission and reception unit of a second sensor (S2) of a second communication subscriber responds with a response pulse. The response pulse is received and evaluated by the first sensor (S1) and positioning is performed. In order to achieve reliable cooperative sensor communication, the transmission and reception units of the first and second sensors (S1, S2) use a frequency band (SCH2) which is reserved for vehicle-oriented safety applications.

The invention discloses a precise numerical control machine tool. The precise numerical control machine tool comprises a machine body. One side of the lower end of the machine body is rotatably connected with an oil cylinder. A bearing rod is rotatably connected to the tail end of a piston rod of the oil cylinder in a sleeving mode. Connecting rods are rotatably connected to the two ends of the bearing rod in a sleeving mode. One ends of the connecting rods are rotatably connected to one side of the lower end of the machine body in a sleeving mode. Two ends of the bearing rod are provided withfirst rotating wheels. One side of the lower end of the machine body is fixedly provided with two mounting pieces. A first fixing shaft is rotatably connected to the two mounting pieces jointly in asleeving mode. According to the precise numerical control machine tool, the position of a roller can be conveniently controlled, so that the roller or a bottom plate makes contact with the ground; when the roller makes contact with the ground, the position of the roller is convenient to adjust, positions of the bottom plate and the machine body relative to each other can be well adjusted and fixed, the stability of the machine body can be guaranteed, the machining quality can be improved, and meanwhile, the position of a first baffle can be well fixed, the situation that the first baffle collides with the machine body excessively is avoided, effective shielding can be ensured, and workers are protected.

A wireless communication circuit for operating over a wireless local area network (WLAN) supporting carrier sense multiple access / collision avoidance (CSMA / CA) in which real time application (RTA) traffic and non-RTA traffic coexist. Channel time is scheduled for transmitting real-time application (RTA) traffic based on expected RTA packet arrival time, with the schedule being shared with neighboring stations. Schedule time is adjusted based on schedules of neighboring stations to prevent channel contention collisions of multiple RTA traffics contending for the channel. Various mechanisms are described for supporting RTA transmissions while reducing channel access latency and contention collision.

An optical storage interface apparatus comprises a lens module (LM). The lens module (LM) may comprise, for example, a solid immersion lens for near-field optical readout or near-field optical recording, or both. The lens module (LM) forms a light spot (SP) on an optical information carrier (DSK) in response to a light beam (BO) that is projected on the lens module (LM). A lens actuator (LA) moves the lens module (LM) from a rest position, which is relatively distant from the optical information carrier (DSK), to a read position, which is relatively close to the optical information carrier (DSK). A controller verifies whether the lens module (LM), when moving from the rest position to the read position, has a velocity that is below a velocity threshold or not. If not, the controller causes the lens actuator (LA) to pull back the lens module (LM) with respect to the optical information carrier (DSK).

A method of playing a game having certain aspects and rules similar to those of regulation baseball, but with modifications to suit a wider range of age, gender and ability than regulation baseball. Only fastball pitches are allowed. Specifically, all pitches other than fastballs (e.g., curveballs) are prohibited. A penalty may be issued when the pitcher delivers a pitch other than a fastball. In addition, rules are provided that will speed up the pace of the game, such as issuing a strikeout after two strikes and a walk to the batter after three balls. The game also provides that divisions may be organized according to the velocity of pitching, age and / or gender of players. The game also optionally provides for the use of a reduced injury factor ball and a wooden bat for increased safety.

A connector includes a first buffer member that includes a spiral-shaped wire, a second buffer member that has a substantially annular and flat plate-like shape capable of warping in a thickness direction, a collar member that includes a first flange facing a radially inner side of the first buffer member, and a second flange facing a radially inner side of the second buffer member, and a coupling member. A gap for allowing the second buffer member to move in a radial direction is formed between the second buffer member and a cylindrical portion. A distance between a position of a surface of the second flange and a position of a lowest end of the collar member is greater than a distance between a position of a surface of the first flange and the position of the surface of the second flange in a view in an axial direction.

The application relates to a closed microcatheter treatment device in the venous cavity, including a control assembly and a catheter assembly; a power source and a male joint connected to the power source are installed in the control assembly; A matching female connector, a guide wire connected to the female connector, and a tube body sleeved outside the guide wire and fixedly connected to the catheter assembly; the guide wire includes a fixed end and a working end, and the fixed end of the guide wire is connected to the female connector; The control assembly is provided with a limiting structure, and the catheter assembly is provided with a limiting member; when the female connector is engaged with the male connector, the catheter assembly is moved away from the working end of the guide wire until the limiting member can rotate radially and snap into the limit. Position structure, so that the working end of the guide wire extends out of the tube body to a stable working state; after releasing the engagement of the limiter and the limit structure, move the catheter assembly so that the working end of the guide wire is retracted into the tube body and switched to non-working state. The application improves the therapeutic effect and shortens the postoperative recovery time of patients.

A hinge device for appliances with top loading has a first fixing means (3) assigned to be fixed to a body (S) or framework of an appliance and pivotally connected, by means of a hinge pin (4), to a second fixing means (5) assigned to be fixed to a top door (P) or hatch of the appliance to allow the opening and closing strokes between extreme opening and closing conditions of said door. In an operative condition, the rotation axis of said hinge pin (4) and the plane of the door in the closed condition are horizontal or almost horizontal. The second fixing means (5) is provided with a first connection pin (6) parallel to and spaced from the hinge pin (4),said first connection pin (6) is connected to an end of a transmission means (9) whose opposite end has a second connection pin (10) parallel to the first connection pin (6) and which can slide in a second slot means (35) of a shaped guide means (19) of the first fixing means (3) and nearly rectilinear and parallel to the path portion (21).Such second connection pin (10) is connected to a shaped body means (13) comprising at least a roll means (14) and a coupling means (16) for and end of a resilient means (17) acting at least in adirection according to the opening direction. Said shaped guide means (19) has a path portion (21) delimited between a first extremity (22) and a second extremity (23) thereof (21) and having at leasta recess means (24) placed between said extremities (22, 23) where the roll means (14) abuts with said path portion (21) and moves along it in the opening stroke starting from the closed condition, in which the roll means (14) abuts the first extremity (22). The roll means(14) reaches at least a metastable opening condition where it (14) is in the at least one recess means (24) and it (14) abutswith one edge of said recess means (24) facing the second extremity (23) until, due to a thrust towards the opening direction sufficient to leave the recess means (24), the roll means(14) reaches thecondition of extreme opening in which it (14) abuts against the second extremity (23) and vice versa in the closing stroke.

The invention relates to a load holding valve for construction machinery oil cylinder, which comprises a valve sleeve, which is provided with a first oil port and a second oil port; a screw sleeve, which is threaded on the upper end of the valve sleeve; a valve seat, which is fixedly connected to In the valve sleeve; the one-way valve core is slid in the valve sleeve, and has an inner cone surface to form a line seal with the lower end surface of the valve seat; the adjustment rod is threaded on the screw sleeve; the control spool is slid in the valve seat Inside; control spring. The load holding valve for engineering machinery oil cylinder of the present invention has the advantages of simple structure, compact volume, easy integration and long service life.

The invention belongs to the technical field of hydraulic components. The invention discloses a threaded plug-in load holding valve. The valve body is provided with an oil inlet, an oil outlet, a control oil port and an oil discharge port; The lower end of the valve seat is in sealing contact with the one-way valve core; the flow control valve core is located inside the valve seat and can move axially relative to the valve seat; the lower end of the valve seat is provided with an axial hole, and the lower end of the flow control valve core is sealed with the axial hole contact; the flow control spool and the valve seat form a control cavity, and there is a first spring in the control cavity to generate a pressing force on the flow control spool; the flow control spool is provided with a valve hole and a damping hole, and the damping hole and the oil outlet It communicates with the valve hole, and the valve hole is communicated with the oil discharge port and the control cavity; the upper end of the pilot spool and the valve body form a control oil cavity and communicate with the control oil port, and the lower end is in sealing contact with the valve hole. The threaded cartridge load holding valve of the present invention is easy to integrate, has a long service life, and has a safety overflow function and fretting performance.

The invention relates to the technical field of positioning and tracking, and discloses a neck wearing type intelligent lamb tracker which comprises a buffer strip with bandages arranged on the two sides and a positioner assembly located on the inner side of the buffer strip, and two switching mechanisms symmetrically distributed and located on the two sides of the positioner assembly are arranged on the outer side of the buffer strip. Fixing frames are arranged on the two sides of the positioner assembly correspondingly, and the positioner assembly is rotatably connected with an adapter clamped into each switching mechanism through fixing pins fixedly connected into the fixing frames in a sleeved mode. According to the neck wearing type intelligent lamb tracker, through cooperative use of the fixing sleeve, the clamping block, the limiting groove and the adapter, the positioner assembly on the lamb tracker can be directly disassembled by rotating the adapter, replacement and installation of the positioner assembly are facilitated, meanwhile, through cooperative use of a limiting rod, an ejector rod and a spring, the lamb tracker can abut against the clamping block through the conical surface of the ejector rod, and the positioner assembly is prevented from falling off from the lamb tracker.