125 results about "Link design" patented technology

A forward link design is provided employing CDMA (code division multiple access) technologies in which time division multiplexing is employed between data and control information on the forward link to service multiple users per slot. Another forward link design employing CDMA (code division multiple access) technologies is provided in which code division multiplexing between data and control information is employed on the forward link to service multiple users per slot, which is preferably backwards compatible with legacy standards such as IS2000A. A reverse link design is also provided.

A system and method for managing access to a satellite-based transponder by a plurality of aircraft each having a mobile radio frequency (RF) system. The system employs a ground-based, central control system for managing access to the satellite-based transponder so that the aggregate power spectral density (PSD) of the RF signals of all the mobile systems does not exceed, at any time, limits established by regulatory agencies to prevent interference between satellite systems. This is accomplished by a dual control loop arrangement for monitoring the signal-to-noise ratio (Eb / No) of the RF signal transmitted by the satellite-based transponder. A ground-based control loop is used whereby a ground-based central controller monitors the Eb / No and transmits commands to the aircraft (via the satellite transponder) to maintain the Eb / No of the transmitted signal within a predetermined range. A fast scan angle compensation is used by the mobile system of the aircraft to implement another control loop to further adjust the transmit power. This control loop maintains the Eb / No of the signal transmitted to the satellite-based transponder at the commanded level inbetween updates from the ground-based central controller.

A method and system for interactive modeling of high-level network performance with low-level link design provides a tool for optimizing networked computing systems and their link components simultaneously. The method models a fixed portion of a network and specifies operational performance levels and power constraints. A solution is chosen for a non-fixed network portion and the network is simulated to determine link requirements and synthesizes links in conformity with the link requirements. The links are analyzed to determine performance (e.g., bandwidth) and requirements (e.g., power) and network performance is recalculated. An iterative loop from the selection of the non-fixed topology through synthesis and recalculation of link performance can be implemented to optimize the link and network design. The links may be links that use an adaptive management policy that trades off power and bandwidth in multiple operating modes and the method may be used to optimize the operating modes and / or management rules.

The invention discloses a double-linear polarization Doppler weather radar system which comprises an outdoor part and an indoor part. The outdoor part comprises an antenna servo subsystem, a transmitting subsystem, a receiving subsystem, a monitoring calibration subsystem and a power distribution subsystem. The indoor part comprises a signal processing terminal and a user subsystem. According to the double-linear polarization Doppler weather radar system, the ingenious signal link design is adopted, the equipment quantity is reduced, and the reliability of the system is improved; a multi-channel signal processing mode is used, simultaneous measurement of all parameters of a double-linear Doppler weather radar is achieved, and the timeliness of detection data is improved; a signal processing technology based on a GPU is utilized, and the processing capacity of double-linear signals is enhanced; a unique two-channel full-path transmitting-receiving calibration technology is used, two-channel transmitting-receiving system errors of the radar system are reduced, and an effective guarantee is provided for improving the quality of the detection data.

A flexible piece of jewelry, such as a charm bracelet or necklace, that utilizes non-continuous chain links that constitute the continuous chain of the piece of jewelry. This link design allows more non-continuous links to be added to the bracelet as the child grows and the need for a larger piece of jewelry evolves and minimizes damage to the piece of jewelry caused by the addition of additional charms or links.

The invention discloses a distributed node self-adaptive routing algorithm for an LEO satellite network. The technical characteristics are that the algorithm includes the following steps: a latticed LEO satellite communication system similar to an Iridium constellation is constructed; according to an interstar link design in a longitude and latitude direction, each satellite node is independently responsible for forwarding datagrams in a queue through a netted topological structure of a satellite constellation; and through increases and transmission of additional network state information in the datagrams, the satellite nodes sense and predict network states in different routing directions, and then the datagrams are guided to select forwarding links. The distributed node self-adaptive routing algorithm is reasonable in design. The determined self-adaptive routing mechanism balances traffic to prevent congestion through a load balancing means, and is applied to a low earth orbit Iridium-like constellation satellite network system. The network performance index of the algorithm is better than network performance indexes of other conventional algorithms. Particularly in a condition that a few routing hops is increased, the network load balancing degree is substantially increased, and the performance of the algorithm is more excellent than the conventional algorithms.

The invention relates to a low-complexity load balancing route algorithm based on an LEO satellite network. According to the technical characteristics, a latticed low-orbit satellite communication system similar to an Iridium satellite constellation is configured; according to inter-satellite link design in latitude and longitude directions, each satellite calculates a next hop of satellite node in a distributed manner by utilizing the netted topological structure of a satellite constellation, the queuing time delay is calculated, and a route is determined through a satellite node notification mechanism. According to the invention, the design is reasonable, the route algorithm is utilized to lower time complexity and obtain an optimum path, a load balancing means is utilized to balance flows and avoid congestion, the low-complexity load balancing route algorithm is applied to the low-orbit satellite communication system similar to the Iridium satellite constellation, the network performance index is better than those of other conventional route algorithms, and the time complexity is obviously lowered; and especially when the number of network nodes are substantially increased, the performance of the algorithm is better than that of the conventional algorithms.

Various conveyor designs suitable for conveying objects along a transport direction and various related link designs are disclosed. The conveyor may include a plurality of the connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport, a conveying surface, and at least one gripping member moveable along at least a portion of length of the link from a first position to a second position. The gripping member when in the first position is disposed below the conveying surface of the link, and the gripping member when in the second position is disposed above the conveying surface of the link for contacting one of the objects to hold the object during transport. Various designs of gripping members and related elements are disclosed, including spring loaded, cam driven, rack and pinion, and overhead designs. Various elements of the disclosed designs may be combined in various ways to form numerous link and conveyor options.

Various conveyor designs suitable for conveying objects along a transport direction and various related link designs are disclosed. The conveyor may include a plurality of the connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport, a conveying surface, and at least one gripping member moveable along at least a portion of length of the link from a first position to a second position. The gripping member when in the first position is disposed below the conveying surface of the link, and the gripping member when in the second position is disposed above the conveying surface of the link for contacting one of the objects to hold the object during transport. Various designs of gripping members and related elements are disclosed, including spring loaded, cam driven, rack and pinion, and overhead designs. Various elements of the disclosed designs may be combined in various ways to form numerous link and conveyor options.

A system and method for managing access to a satellite-based transponder by a plurality of aircraft each having a mobile radio frequency (RF) system. The system employs a ground-based, central control system for managing access to the satellite-based transponder so that the aggregate power spectral density (PSD) of the RF signals of all the mobile systems does not exceed, at any time, limits established by regulatory agencies to prevent interference between satellite systems. This is accomplished by a dual control loop arrangement for monitoring the signal-to-noise ratio (Eb / No) of the RF signal transmitted by the satellite-based transponder. A ground-based control loop is used whereby a ground-based central controller monitors the Eb / No and transmits commands to the aircraft (via the satellite transponder) to maintain the Eb / No of the transmitted signal within a predetermined range. A fast scan angle compensation is used by the mobile system of the aircraft to implement another control loop to further adjust the transmit power. This control loop maintains the Eb / No of the signal transmitted to the satellite-based transponder at the commanded level inbetween updates from the ground-based central controller.

A conveyor is disclosed suitable for conveying objects along a transport direction. The conveyor includes a plurality of connected links, each link having a length extending across the direction of transport and a width extending along the direction of transport. Each link has a conveying surface and at least one movable gripping member extending from the conveying surface of the link. Each gripping member is movable from a first opened position to a second gripping position. The gripping members each include a gripping arm having a pivot point, a gripping end spaced from the pivot point, and a cam follower extending outward from the gripping arm between the pivot point and the gripping end. The gripping arm is located so as to be able to contact one of the objects via the gripping end when the gripping member is in the second position to hold the object relative to the link during transport. Each link includes at least one spring member urging the gripping members toward the second position. The links may be connected by universal joints, and may have two opposed movable gripping members. Related conveyor and link designs are also disclosed.

A forward link design is provided employing CDMA (code division multiple access) technologies in which time division multiplexing is employed between data and control information on the forward link to service multiple users per slot. Another forward link design employing CDMA (code division multiple access) technologies is provided in which code division multiplexing between data and control information is employed on the forward link to service multiple users per slot, which is preferably backwards compatible with legacy standards such as IS2000A. A reverse link design is also provided.

Various conveyor designs are disclosed, along with related link designs, suitable for conveying objects along a transport direction. The conveyor may include a plurality of connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport. Each link may have a body, a slider, at least one gripping member, and a gear drive mechanism interconnecting the slider and gripping member. The slider is slidable along the length of the body to selectively move the gripping member between a first position and a second position via the gear drive mechanism. The gripping member when in first position is disposed in an open position, and the gripping member when in the second position is disposed in a gripping position for contacting one of the objects to hold the object during transport. The gear drive mechanism may be a rack and pinion mechanism, the gripping member may have one or more gripping arms, and the gripping arms may or may not be offset from the gear drive mechanism.

Various conveyor designs are disclosed, along with related link designs, suitable for conveying objects along a transport direction. The conveyor may include a plurality of connected links. Each link may have a length extending across the direction of transport and a width extending along the direction of transport. Each link may have a body, a slider, at least one gripping member, and a gear drive mechanism interconnecting the slider and gripping member. The slider is slidable along the length of the body to selectively move the gripping member between a first position and a second position via the gear drive mechanism. The gripping member when in first position is disposed in an open position, and the gripping member when in the second position is disposed in a gripping position for contacting one of the objects to hold the object during transport. The gear drive mechanism may be a rack and pinion mechanism, the gripping member may have one or more gripping arms, and the gripping arms may or may not be offset from the gear drive mechanism.

The invention relates to a classroom timely feedback device, which comprises a receiver, a teacher class guiding hand board and student hand boards. The invention further discloses a classroom timely feedback system, which comprises a teaching design problem assigning module, a teaching assessment module and a reporting module. The classroom timely feedback device and the classroom timely feedback system have the advantages that: the classroom timely feedback system utilizes the student hand boards to send out signals, the signals are received and processed by a 2.4G wireless receiving module in protocol communication with computer software, the signals are further processed through the software, thus subjective selection of students by the teacher is avoided through a vies to answer first manner, each student can have the opportunity to participate in teaching and learning activities through technical support; and through key operation of the student hand boards, the results of each students in each learning effect evaluation link designed by the teacher are fed back timely, the teacher and students can learn about their learning effect timely and accurately through multiple ways such as excel forms, bar chart and pie charts, thereby providing reference for adjusting teaching activities, and providing effective technical support for improve the effectiveness of classroom teaching.

The invention discloses a redundant link design method and system of an active-active storage system. The method includes the steps: determining whether a first data link malfunctions when monitoring that a first heartbeat link malfunctions, starting a second heartbeat link if determining that the first data link does not malfunction, and transmitting heartbeat information through the second heartbeat link; and starting the second heartbeat link and a second data link when determining that the first data link malfunctions, transmitting the heartbeat information through the second heartbeat link, and transmitting data information through the second data link. According to the above technical solution, heartbeat detection abnormity caused by abnormity of some heartbeat signal lines, abnormal communication and other reasons can be effectively prevented, the fault tolerance performance of communication lines between controllers in a storage system is great, and requirements of different application environments and network environments can be met. Therefore, multipath redundancy is achieved, and the reliability of the system and the continuity of services are guaranteed.

The invention relates to a statistical property-based method for synthetic aperture sonar target detection. In the method, the detection is performed on the basis of an echo statistical model, and a model which has deterministic components and of which the echo is supposed to be surrounded by background noise and the size is dependent on pixel resolution and pretreatment link design is adopted. The method for synthetic aperture sonar target detection comprises the following steps of: firstly, mapping a synthetic aperture sonar (SAS) original image to a mean-standard deviation plane; secondly, automatically setting a threshold of standard deviation on the SAS original image through an entropy rule; thirdly, counting by a statistic analytical mode of the SAS original image to obtain a scale factor between a mean and the standard deviation in the mean-standard deviation plane, and obtaining a mean threshold by utilizing the scale factor and the threshold of the standard deviation; and finally, performing dual-threshold image segmentation on the SAS original image by utilizing the threshold of the standard deviation and the mean threshold.

A conveyor is disclosed suitable for conveying objects along a transport direction. The conveyor includes a plurality of connected links, each link having a length extending across the direction of transport and a width extending along the direction of transport. Each link has a conveying surface and at least one movable gripping member extending from the conveying surface of the link. Each gripping member is movable from a first opened position to a second gripping position. The gripping members each include a gripping arm having a pivot point, a gripping end spaced from the pivot point, and a cam follower extending outward from the gripping arm between the pivot point and the gripping end. The gripping arm is located so as to be able to contact one of the objects via the gripping end when the gripping member is in the second position to hold the object relative to the link during transport. Each link includes at least one spring member urging the gripping members toward the second position. The links may be connected by universal joints, and may have two opposed movable gripping members. Related conveyor and link designs are also disclosed.

The invention discloses an optical module test system and a method thereof. The test system comprises an oscilloscope, a power meter, a spectrometer, an optical attenuator, a light source module and abit error detector. The key test indexes of the optical module, such as optical power, an extinction ratio, a spectrum, a channel cost, an overload, a sensitivity, a receiving / emitting terminal monitoring and the like, are integrated into a test link to realize the test. Compared with the prior art, the invention has the following positive effects: 1, under the condition of guaranteeing the module production and testing, the invention realizes: 1, integrates the testing process of the optical module, reduces the software management work, avoids the risk of the software management, reduces thetesting cost and ensures the testing demand; 2, clever link design enhances the efficiency of the instrument; 3, the relativity between the test indexes is established, which is equivalent to the strict test requirements and enhances the reliability of the test results.

The invention belongs to the field of power system dispatching automation, and particularly provides an energy-saving power generation dispatching method. The method comprises the steps of: pre-defining real-time load rates of units; calculating coal consumption difference per-unit values of the units; establishing the mathematical relation among load rates, coal consumptions and discharge standards of the units according to the coal consumption difference per-unit values of the units; calculating to obtain the load rates and loads of the units according to the real-time load rates of the units and the established mathematical relation; and performing energy-saving power generation dispatching according to the load rates and the loads of the units. The technical proposal provided by the invention breaks the prior fixed thinking of 'a top table method', originates the thought and the method of linking designed coal consumption values and actual power generation equivalent load rates of the units together, constructs a related mathematic model, breaks the technical bottleneck of the field of energy-saving power generation dispatching, scientifically solves the important problem of implementing an energy-saving power generation dispatching principle into the actual establishment of power generation plans, and has important significance in the concrete implementation of energy-saving power generation dispatching.

The invention provides a high-speed link signal integrity fast evaluation method and system. The method comprises the following steps: S1, selecting a test-corrected similar type topology as a reference topology; S2, performing modeling and simulation respectively based on the current topology and the reference topology; S3, and analyzing and comparing the simulation results of the current topology and the reference topology. The invention solves the problem of poor timeliness for high-speed link signal integrity simulation evaluation in the prior art, realizes the simulation evaluation of thehigh-speed link in a relatively short time, maximizes the time for link design and optimization, and improves timeliness. The method makes full use of the accumulated data, can quickly evaluate the risk of similar link design, improves the efficiency of high-speed link evaluation, and buys more time for project design optimization.

The invention relates to an adjustable picosecond laser. The adjustable picosecond laser is formed through the connection of all-polarization maintaining optical fiber devices; one end of the picosecond laser is a saturable absorption device, and then a gain optical fiber, a wavelength division multiplexer, a beam splitter, an optical switch, a plurality of delay optical fibers and optical fiber gratings correspondingly connected with the delay optical fibers one by one are orderly connected behind the saturable adsorption device; the other input port of the wavelength division multiplexer is connected with a pumping source, the other two ports of the beam splitter are respectively used as an oscillator output end and a monitoring end. An optical fiber link designed with the all polarization maintaining structure can resist the environment interference, and guarantee the long-term stabilization of the output pulse; a plurality of pulse widths, working wavelengths and repetition frequency required by the application can be previously set; by use of the optical switch, the adjustable picoseconds laser can be flexibly switched in multiple laser output parameters, so that application requirements can be met; and compared with the semiconductor picosecond laser in electric pulse modulation, the average power output by the adjustable picosecond laser is high, and adjustable picoseconds laser is more suitable to be a seed source for subsequent laser amplification.

Various methods and systems are provided for diagnosing a rotating device. In one example, a system includes a rotating device and a RFID circuit coupled to the rotating device. The RFID circuit includes a RFID chip, an antenna, and a mechanical link designed to change impedance with a changing input from the rotating device.

A lamp comprises a lighting module mounted on a front housing, an electric power supply device connected to the lighting module, a rear pressing part, and means for fixing. The latter comprise a flexible link fixed to the rear pressing part, a securing device having gripping means, means for tensioning, and sliding means of the link designed to move the front housing and the rear pressing part towards one another. The flexible link is formed by a cord, a lace, or a flexible wire, and the gripping means of the securing device are centralized on the rear pressing part.

The invention discloses an improved non-weak-link dual-unlocking safe. The safe comprises a safe body and a portable fingerprint instrument. A dual-recognition instrument comprising a sound receiver, a fingerprint acquisition area, buttons, a display, a vocal print / fingerprint recognition system, a recognizer and a battery is arranged on the inner side of the safe body. According to the safe, a fingerprint and vocal print dual-recognition system is used, when one kind of recognition is not convenient, the other kind of recognition can be used, and accordingly, the application flexibility is improved; non-weak-link design is used, peripheral equipment such as a password disc, a lock hole, a keyboard, a liquid crystal display panel, a card reader or a fingerprint instrument is not arranged on the periphery of the safe body, the safe body is provided with the complete rigidity of metal materials, and usable acting points for thieves are absent, so that the safe cannot be opened easily.