84 results about "Stopping set" patented technology

Disclosed are an encoding device and a decoding device which can effectively reduce the decoding failure frequency in LDPC encoding / decoding. A loss correction encoding device (120) includes a padding unit (121) which adds a padding packet to an information packet sequence; an interleave unit (122) which rearranges the padding packet and the information packet; and a loss correction encoding unit (123) which performs loss correction encoding for the packet string after the interleave. The interleave unit (122) rearranges the padding packet and the information packet according to variable nodes constituting a minimum stopping set of the inspection matrix which defines a low-density parity inspection code. The interleave unit (122) uses such a rearrangement pattern that avoids a loss correction failure by the minimum stopping set of the LDPC inspection matrix so as to reduce the probability of the loss correction failure by the minimum stopping set.

While directional communication using millimeter waves is realized, the number of communication stations through which simultaneous communication is possible is increased to increase the throughput of the entire system.A communication apparatus stores, as a stop setting person direction, a beam direction in which received electrical power when an RTS or a CTS destined for another station is received becomes a maximum and then sets a transmission stop period. Within the transmission stop period, only when the direction of a frame transmission destination is separate from the stop setting person direction, transmission of frames is performed by directing a transmission beam toward the frame transmission destination. Whereas a hidden terminal does not unnecessarily stop a frame transmission operation, the hidden terminal is not against the intention of requesting the setting of the transmission stop period.

Disclosed are an encoding device and a decoding device which can effectively reduce the decoding failure frequency in LDPC encoding / decoding. A loss correction encoding device (120) includes a padding unit (121) which adds a padding packet to an information packet sequence; an interleave unit (122) which rearranges the padding packet and the information packet; and a loss correction encoding unit (123) which performs loss correction encoding for the packet string after the interleave. The interleave unit (122) rearranges the padding packet and the information packet according to variable nodes constituting a minimum stopping set of the inspection matrix which defines a low-density parity inspection code. The interleave unit (122) uses such a rearrangement pattern that avoids a loss correction failure by the minimum stopping set of the LDPC inspection matrix so as to reduce the probability of the loss correction failure by the minimum stopping set.

An imaging lens apparatus comprises four lenses with refractive power by which lead the light from the object side to the image side: a first lens with a convex object-side surface and positive refractive power, at least one surface of the first lens is aspheric; an aperture stop set next to the first lens; a second lens which is a biconcave lens with negative refractive power, at least one surface of the second lens is aspheric; a third lens which is a positive meniscus lens with a concave object-side surface, both side of the third lens are aspheric; and a fourth lens which is a negative meniscus lens with a convex object-side surface, both side of the fourth lens are aspheric with at least one inflection point; and the imaging lens apparatus satisfy the conditions below: |1 / slope_S8|>0.9; −0.2 <SAG_S8<0.1.

The present invention provides an open and close device for thermal insulating box which cover is easy to open. The open and close device sets on the thermal insulating box, and has box side stop part, operation part, cover side stop part, force load part, thereinto, thermal insulating box has box main body and cover of open for open and close the box main body. The box side stop sets on the box main body, the operation part sets on the cover, and has upper operation part towards one side of upper surface of the cover and lateral operation part towards one side of lateral surface of the cover, and make the upcast movement of the mentioned operation part and the movement of the mentioned lateral operation part towards cover medial side linkage. The cover side stops part sets on the cover, and load towards the fastening position direction with the box side stop part, and to switch the cover side stop part from the fastening position to releasing position through lifting the upper operation part towards upper or pressing the lateral operation part towards the cover medial side. The force load part loads the cover side stop part on the fastening position with the box lateral stop part.

The invention discloses a medium and small city bus line network design method based on whole-process travel perception time. The method takes the line length, the total number of line network vehicles, the departure interval, the transfer frequency and the like as constraints and takes the minimum travel perception time of the whole passenger travel process as a target to carry out bus line design, and comprises the following steps: firstly, determining a bus stop set and first and last stop pairs, and generating an initial candidate line set by using a K shortest path algorithm; secondly, screening the initial candidate line set according to the line length and the sum of weight coefficients of bus nodes on each line to obtain a second-generation candidate line set; thirdly, a genetic algorithm and an exhaustion method are used for obtaining a third-generation bus line set, a bus trunk line scheme and a branch line scheme are determined, finally, the bus line network is adjusted in combination with the actual situation, the actual requirement is better met, and the method can provide a method basis for design of the bus line network of small and medium cities according to the design requirement of different levels of the bus trunk line and the branch line.

The present invention provides one kind of emergency vehicle stopping set with simple structure, easy setting and shifting, and capacity of stopping vehicle reliably in emergency. The emergency vehicle stopping set includes one vehicle stopping member of horizontal hollow angled column, one buffering body connected to one end of the vehicle stopping member, one prolonging member connected to the other end of the vehicle stopping member, and blocking material extending from the prolonging member to the buffering body. The emergency vehicle stopping set can stop vehicle via absorbing impact and rubbing with road.

The invention provides an electric heating control method for a zoned air supply air conditioner and discloses the air conditioner simultaneously. The electric heating control method comprises the following stages of the start control stage and / or a stopping control stage. According to the start control stage, whether linkage function parts, the indoor environment temperature, the difference value of the indoor environment temperature and the set temperature, and the detection values of coil pipe temperature sensors arranged in a same shell with electric heaters meet the starting setting conditions or not is determined, when all the starting setting conditions are met, the electric heaters are started. According to the stopping control stage, stopping of any one of the electric heaters comprises the following multiple parallel steps that whether the linkage function parts, the indoor environment temperature, the difference value of the indoor environment temperature and the set temperature, and the detection values of the coil pipe temperature sensors meet the stopping setting conditions or not is determined, and when one of the stopping setting conditions is met, the electric heaters are switched to be in a stopped state or maintained to be the stopped state, wherein the linkage function parts at least comprise compressors and cross-flow fans. The electric heating control method and the air conditioner have the advantages that the air conditioner effect is good, the control mode is flexible, and comfort is high.

The invention provides a night-shift bus stop and path selection method, which comprises a candidate bus stop setting method and an optimal bus path selection method, wherein the candidate bus stop setting method is characterized by defining hot spot regions of a city by utilizing getting-on / off position information of taxies, and then, selecting a candidate bus stop from each hot spot region; and the optimal bus path selection method is characterized by constructing a directed graph based on the candidate bus stops and driving route direction and distance, and then, obtaining one-way and two-way bus optimal driving paths through a one-way optimal path algorithm and a two-way path selection algorithm respectively. The method can help to improve an urban bus service system, provides more convenience to related people and meanwhile, can improve efficiency.

A method and an apparatus for transmitting a signal in a communication system are provided. An information vector is encoded according to a Low Density Parity Check (LDPC) encoding scheme, thereby generating an LDPC codeword. Minimum surviving check nodes are reserved for recovery of punctured nodes in the LDPC codeword. A check node is selected having a smallest cost function from among unreserved check nodes. A variable node is selected being unpunctured and having a smallest cost function from among variable nodes connected to the selected check node. The selected variable node is punctured when the selected variable node is not connected to the reserved check node. A stopping set check is performed when the selected variable node is connected to the reserved check node. The variable node is punctured when the stopping set check has been successfully performed. The check node is selected until there remains no variable node to be punctured and puncturing the variable node.

The invention discloses a single-toe elastic strip fast detecting tool and a detecting method. The appearance dimension precision of a single-toe elastic strip can be fast and accurately measured for judging whether the dimension of an elastic strip conforms to the technical requirement or not, and the problems of inconvenient measurement and inaccurate measurement caused by the complicated appearance of the elastic strip can be solved. The single-toe elastic strip fast detecting tool and the detecting method have the positive effects that the unified detected state of the elastic strip and the consistency with the work state of the elastic strip are ensured, whether the dimension of the elastic strip conforms to the requirements or not can be conveniently and fast judged through the pass-stop setting in each direction, the process control of mass production and the use acceptance check are met, and the production efficiency and the quality level of the elastic strip can be effectively improved.

A decoder performs iterative decoding of a codeword encoded by a binary symmetry-invariant product code, such as a half product code or quarter product code. In response to the iterative decoding reaching a stopping set, the decoder determines by reference to an ambient error graph formed from the stopping set whether or not the stopping set is correctable by post-processing. If not, the decoder outputs the uncorrected codeword and signals a decoding failure. In response to determining that the stopping set is correctable by post-processing, the decoder inverts all bits of the codeword corresponding to edges of the ambient error graph, applies an additional round of iterative decoding to the codeword to obtain a corrected codeword, and outputs the corrected codeword. Post-processing in this manner substantially lowers an error floor associated with the binary symmetry-invariant product code.

The invention relates to an automatic voltage regulation (AVR) singlechip control-based thick wire electric-gas vertical welding machine and a control method. The welding machine comprises a three-way trolley travelling set circuit, a swing front and back stop set circuit, a swing amplitude and speed set circuit, a welding torch centering swing control set circuit, a welding start / end control circuit, a digital display circuit, a welding mode selection control circuit, a welding start / stop control circuit, an optocoupler isolation circuit, a travelling motor control drive circuit, a swinging motor control drive circuit and a motor voltage current feedback circuit. In the method, welding voltage is sampled to serve as a feedback control signal of automatic climbing of a trolley and the change of wire feeding speed; when the arc length is increased by interference in the automatic welding process, the arc voltage is increased and the wire feeding speed is increased, so that the arc length is reduced, and the speed of a climbing direct current servo motor is reduced, so that the arc length is reduced; when the arc length is reduced by interference, the arc voltage is reduced and the wire feeding speed is reduced, so that the arc length can be increased; and when the arc length is not changed in the automatic welding process, the wire feeding speed and the travelling speed of the climbing trolley are not changed, so that the arc length is stable.

The invention relates to the technical field of intelligent public transport and especially relates to a candidate bus route calculating method and system and an electronic device. The method comprises the following steps: a) screening a candidate bus stop set according to screening rules, and constructing an initial candidate bus route map according to the screened candidate bus stops; b) carrying out pruning on the initial candidate bus route map to obtain a final candidate bus route map; and c) based on a bus route generation algorithm, calculating a bus route reaching maximum passenger flow within the maximum driving time in the final candidate bus route map to obtain an optimal candidate bus route. The method realizes design of city candidate bus routes based on heuristic search, canquickly find the bus route reaching the maximum passenger flow under the constraint condition of the maximum driving time, fully considers travel requirements of passengers and economic benefit of a bus operation company, and is simple in algorithm parameters, simple in optimization process and high in execution efficiency.

An image-reading apparatus includes a gain correction processing portion, and a gain setting control portion including a setting portion that sets a gain condition, the gain setting control portion: repeatedly sets the gain condition in the setting portion at predetermined time intervals, and records the set gain condition in the recording portion, in an idling state from when the power supply portion switches to an on state until a reception portion receives a read instruction; stops setting the gain condition in the setting portion in a reading state after the reception portion receives the read instruction; and implements gain correction on electrical signals output from an imaging element in the gain correction processing portion by applying the gain condition recorded in the recording portion just before the reception portion receives the read instruction.

A method and an apparatus for transmitting a signal in a communication system are provided. An information vector is encoded according to a Low Density Parity Check (LDPC) encoding scheme, thereby generating an LDPC codeword. Minimum surviving check nodes are reserved for recovery of punctured nodes in the LDPC codeword. A check node is selected having a smallest cost function from among unreserved check nodes. A variable node is selected being unpunctured and having a smallest cost function from among variable nodes connected to the selected check node. The selected variable node is punctured when the selected variable node is not connected to the reserved check node. A stopping set check is performed when the selected variable node is connected to the reserved check node. The variable node is punctured when the stopping set check has been successfully performed. The check node is selected until there remains no variable node to be punctured and puncturing the variable node.

The embodiment of the invention provides a method for generating customized co-riding bus stops based on cluster center correction. The method comprises: determination of an optimal number of customized bus stops, construction of an initial clustering co-riding bus stop set, correction operation of a clustering center and judgment of a clustering co-riding bus stop generation result. Through adoption of the method, the customized co-riding bus stops can be reasonably arranged based on passenger reservation data; corresponding reference is provided for the location selection of the customized bus stops at a current stage; and method support is provided for the opening and implementation of customized bus. The method for generating the customized co-riding bus stops disclosed by the invention is applicable to the network topology of any real road network; the disadvantage that traditional bus stop planning needs subjective adjustment according to experience is abandoned; the defect thatthe current research on customized bus stop layout is not based on an actual road network environment is overcome; and the layout of co-riding bus stops is scientific, accurate, reasonable and effective.

The invention belongs to the technical field of traffic engineering, and relates to a bus stop optimization setting method in view of quantitative classification. The method comprises the following steps of 1, setting improvement on traffic capacities of a bus stop and adjacent roads as an optimization target; 2, building a bus stop comprehensive service level assessment model, and determining a quantitative classification standard; 3, building a bus stop optimization measure set; and 4, quantitatively classifying the bus stop comprehensive service levels under different optimization measures,and selecting the optimal optimization measure. According to the method provided by the invention, the optimized bus stop setting method is systematically quantized, the traffic capacity of the bus stop and the traffic capacities of the adjacent roads are integrated to form the bus stop comprehensive service level, the assessment model and the quantitative classification standard are built, the optimization measure set is built by using berth numbers and stop types as basic elements, and the optimal optimization measure of the bus stop is finally acquired through quantitatively classifying the bus stop comprehensive service level under the different optimization measures.

The invention provides a method for structuring a quasi-cyclic low-density parity check (QC-LDPC) code based on extrinsic message degree (EMD), comprising the following steps: determining parameters of an encoding matrix; structuring an index matrix M (H) of a parity check matrix of the QC-LDPC code; using the parity check matrix of the QC-LDPC code to initialize the index matrix M (H) based on approximate cycle EMD (ACE) algorithm; and assigning a cyclic shift value forming maximum ring length and extrinsic connectivity to each non-negative elements of the index matrix. By using the method provided by the invention, generated codes can be increased to correspond to the minimum stopping set in an ambigram, thus obtaining good error code correcting performance.

An imaging lens apparatus comprises four lenses with refractive power by which lead the light from the object side to the image side: a first lens with a convex object-side surface and positive refractive power, at least one surface of the first lens is aspheric; an aperture stop set next to the first lens; a second lens which is a biconcave lens with negative refractive power, at least one surface of the second lens is aspheric; a third lens which is a positive meniscus lens with a concave object-side surface, both side of the third lens are aspheric; and a fourth lens which is a negative meniscus lens with a convex object-side surface, both side of the fourth lens are aspheric with at least one inflection point; and the imaging lens apparatus satisfy the conditions below: |1 / slope_S8|>0.9; −0.2<SAG_S8<0.1.

The fault diagnosing controller includes mainly input and stable state data judgement module, fault detecting module, flow meter sensor fault diagnosis module, temperature sensor fault diagnosis module, confidence judgment module, data restoring, running set number optimizing module, module for optimizing selection of powdered sets and stopped sets, output, etc. The fault diagnosing control adopts statistical mathematics process based on conversation of energy and conversation of mass. The fault diagnosing controller of the present invention can diagnose the fault in sensors, judge the position and size of the fault, and optimize, select and control based on the diagnosis result to reach the aim of saving energy.

The invention described herein generally pertains to systems and methods related to repeatable and accurate setting of welding torch lead and lag positions, particularly with orbital welding systems. Specifically, a torch is coupled with a lead-lag coupler having a stop lug. A stop set with a stop pin is rotated to a desired position of lead or lag and secured. The lead-lag coupler, and torch which rotates therewith, are then unsecured and rotated until the stop lug contacts the stop pin. In this position, the torch is maintained at the desired angle. The stop pin remains in place throughout operation(s) to permit quick, accurate return to the desired angle if the torch is temporarily moved out of position.

A display device (20) for an elevator, having speed pattern creation means (9) for creating a speed pattern by which an passenger elevator car (3) arrives at a floor of the next stop within allowable drive capacity of a motor (13) and within the shortest time. The speed pattern is created based on an elevator car load obtained by car load detection means (17) and information on a floor of the next stop set by floor-of-the-next-stop setting means (15). An inverter (11) is operated based on the speed pattern to drive the motor (13) that in turn drives a hoist (7), and the display device (20) causes, based on the speed pattern, an advance mark (32a) indicating the advance direction of the elevator car (3) to be displayed on a display section (30). The display device (20) further has circulation continuation means (25) and speed decision means (23). The circulation continuation means (25) circulates the advance mark (32a) in correspondence with the advance direction of the elevator car (3) and causes the circulation of the advance mark (32a) to continue from the start to stop of the car (3). The speed decision means (23) determines circulation speed of the advance mark (32a) based on the speed pattern and inputting a command signal for the circulation speed into the circulation continuation means (25).

The present invention discloses zooming projection lens capable of installing in projection display device. Zooming projector lens includes first lens assembly having negative dioptre and second lens assembly having positive dioptre, wherein first lens assembly consisting of plurality of lens near by image surface and capable of moving along optical axis, second lens assembly consisting of plurality of lens near by object plane and capable of moving along optical axis, one aperture stop set between two adjacent lens of second lens assembly, said aperture stop capable of moving along with second lens assembly, said zooming projector lens capable of correcting aberration, thereby raising projection quality.

The invention discloses a bus route recommending method considering bus arrival frequency and bus riding comfort, which comprises the following steps of: firstly, establishing a bus complex network for all bus stops and bus routes in a research area, and calculating the intermediary centrality of each bus stop; meanwhile, constructing an evaluation system of the bus route recommending method considering the bus arrival frequency and the bus riding comfort; secondly, setting geographical positions of a departure place S and destination E, and carrying out walking buffer area analysis on the S and the E respectively to obtain stop sets {Sa} and {Ea} of the S and E in a specified buffer area; and calculating all recommended bus route schemes from each bus stop in the {Sa} to {Ea}, wherein theobtained results are recorded as a set {SE}; finally, solving bus routes considering the bus arrival frequency and the bus riding comfort, wherein the results are sorted according to a specified itemsequence. According to the invention, the problems of walking distance, transfer, bus passenger comfort degree, arrival frequency and the like can be considered more reasonably, and a scientific basis is provided for urban bus trip optimization.

The invention discloses an automatic stop announcement prompting device for a bus, which comprises a voice stop announcement prompting unit, various prompted stop setting units and a plurality of stop announcement prompters. The voice stop announcement prompting unit is controlled by a driver according to the position of a current arrival stop, the prompted stop setting units are mounted on backs of backrests of seats, the stop announcement prompters are respectively mounted on the seats and independently announce and prompt stops for passengers sitting on the seats, the prompted stop setting units correspond to the stop announcement prompters one by one, each prompted stop setting unit and the corresponding stop announcement prompter form an automatic stop announcement device, and the prompted stop setting units are connected with the voice stop announcement prompting unit. The automatic stop announcement prompting device for the bus is reasonable in design, simple and convenient in operation, high in intelligent degree and fine in service effect, and can solve problems that an existing bus cannot announce and prompt stops for each passenger, is troublesome and wastes labor, passengers need to follow stops or voice stop announcement prompting information continuously, attention and labor are wasted, the passengers get off the existing bus at wrong stops or miss destination stops easily, and the like.

The invention discloses an energy distribution method of a range-extended electric city bus. The energy distribution method includes: detecting a running condition parameter, judging whether the running condition parameter is smaller than a first preset value and larger than a second preset value or not, if so, sending out control commands to close an auxiliary power system and lead a power battery to provide energy; if not, acquiring a current SOC value of the power battery, further judging the current SOC value is larger than a stop-setting value of the auxiliary power system, if so, sending out the control commands to close the auxiliary power system and lead the power battery to provide the energy; if not, sending out the control commands to start up the auxiliary power system to provide the energy for the city bus and to have the power battery recharged. According to the energy distribution method, energy is distributed on the basis of the three parameters of the first preset value, the second preset value and the stop-setting values of the auxiliary power system, so that overall optimization of energy distribution is realized; especially in the third stage, the power battery is fully utilized to provide the energy, and economical efficiency of the city bus is improved.