312results about How to "Avoid error conditions" patented technology

The present invention centers upon uplink communication protocols for use primarily with orthogonal frequency division multiple access (OFDMA) communication systems. Aspects of the invention relate to narrow band frequency division multiplexed (NBFDM) modulation protocols primarily for uplink usage in asymmetric OFDMA communication systems. In particular, NBFDM uplinks that use quadrature multiplexed continuous phase modulation are detailed and noncoherent detection schemes are developed to process the uplink channel signals without the need to transmit uplink phase reference signals. Other aspects of the invention relate to burst mode uplink communications in OFDMA systems such as those involving opportunistic beamforming.

An embodiment of the invention discloses a redundancy detecting method and a system thereof. The redundancy detecting method comprises performing binary chopping on titles of POI data, creating an inverted index for chopped binary words, and searching similar POI data for the POI data according to the word with the lowest occurrence frequency in the inverted index, further, calculating similarity of titles and addresses for searched POI data which has title similar relations, obtaining a total similarity according to the title similarity and the address similarity of the POI data, comparing the total similarity with a preset threshold, and if the similarity is larger than the preset threshold, defining the corresponding POI data as redundant data. By utilizing the invention, redundancy detection in POI data of electronic maps can be realized.

The invention discloses a method and apparatus for processing a request from a client. The method comprises: a request sent by a client is received and a unique identifier of the request is obtained according to the request; matching of the unique identifier of the request and a unique request identifier in a database is carried out; and if the matched unique request identifier exists in the database, a processing result corresponding to the matched unique request identifier in the database is returned to the client instead of carrying out corresponding processing is carried out based on the request. According to the technical scheme, problems that time and resources are wasted and a data operation error is caused because request execution equipment like a server needs to carry out repeated operation according to a repeated request sent by the client when a request time-out situation occurs can be solved successfully, so that the request execution efficiency is effectively improved, resources are saved, and wrong operation occurrence due to needless execution of requests of data can be avoided.

The invention discloses a finger vein recognition method by interested areas and directional elements. Existing vein recognition algorithms can be divided into two types, namely local feature utilization and global feature utilization, but the problems of long time consumption, large computing capacity and low image quality cannot be solved simultaneously. The method includes firstly reading a finger vein image, extracting an interested area by the interested area extraction method based on rotation correction, then constructing vectors by adopting gradient magnitude and direction of pixel points on finger vein lines to represent direction feature of the vein lines in the interested area, combining the direction feature and membership degree of image sub-blocks, creating feature vectors of the vein image, finally during the finger vein matching process, measuring similarity of different linear feature vectors by adopting cross-correlation coefficient, and figuring out matching results. The method is used for finger vein recognition.

A laser osteotomy robot system and path planning method thereof are disclosed, The invention solves that problem that the position accuracy of the lase osteotomy is not high in the prior art, as thatrobot can be effectively control, the beneficial effect of improving operation efficiency, a path planning method for laser osteotomy robot system is proposed. Medical staff complete the design of surgical osteotomy scheme based on preoperative three-dimensional image reconstruction and editing, extract the position information of osteotomy line in image space, map the position information into the coordinate system of robot manipulator, and obtain the path planning.

The invention belongs to the nuclear power plant instrument control field and provides a processing method and system of a nuclear power plant distributed control system. The method includes the following steps that: information transmitted by a current acquisition and processing board is received, wherein the information includes ranging codes of first current signals and significance bits of the current acquisition and processing board; whether the current acquisition and processing board is in a ranging switching state is judged according to the received information; and when the current acquisition and processing board is in the ranging switching state, delay time for transmitting second current signals to anticipated transients without trip (ATWT) protection is determined according to the received information which is transmitted by the current acquisition and processing board, wherein the second current signals are determined according to the ranging codes and analog quantity of the first current signals. With the processing method and system provided by the embodiment of the invention, the probability of misoperation of the ATWT protection can be decreased.

Present invention relates to Present invention relates to multimedia broadcast / multicasting service, and discloses a method to response MBMS modification service so as to obtain MBMS modification service messages response in compromising user experience and preventing error precondition. In said invention, when receiving point-to-point professional subscriber equipment received í‹MBMS re - obtaining MCCH íŒset to true in IE of MBMS MSI messages, increasing step of judging whether needs stopping operated point-to-point service, according to judging result releasing current point-to-point connection to monitor MCCH or ignoring said MSI or forced releasing current point-to-point connection to monitor MCCH, Said invention also can execute not to transmitting MSI messages containing IE í‹MBMS re - obtaining MCCH íŒto subscriber equipment in receiving point-to-point service, when MBMS occurring error and needing re - obtaining controlling messages, to notify subscriber equipment by DCCH point to point controlling messages.

The invention relates to a communication system and a communication method between a client and a server side. The communication method between the client and the server side comprises the steps: detecting whether WCF (Windows Communication Foundation) channels are available in a channel caching pool or not after a WCF client receives a service request; if so, invoking any one available WCF channel from the channel caching pool to be communicated with the WCF server side; and if not, creating the WCF channel to be communicated with the WCF server side based on the service request. The technical scheme provided by the invention can enhance the performance of the WCF client.

The invention discloses a power calibration method and system for a radio frequency receiver of a terminal. The power calibration method for the radio frequency receiver of the terminal includes that the terminal receives a first signal emitted from test equipment and acquires the received power of the first signal; the terminal receives a second signal emitted from the test equipment and acquires the received power of the second signal; a calibration tool subtracts the received power of the second signal in the corresponding power section and the received power of the first signal in the corresponding power section in sequence, and the difference value is used as the calibration value. The method and system are capable of effectively improving the power calibration efficiency for the radio frequency receiver of the terminal.

Theinvention provides a device and method for detecting longitudinal tearing of a large conveyor belt. The device comprises an industrial camera, a line laser transmitter, a brush, a dust removal airgun, a synchronous detection wheel and a PC machine; the industrial camera is installed below the non-carrying surface of the conveyor belt; the line laser transmitter is installed below the non-carrying surface of the conveyor belt and emitted line laser is in a view field of the industrial camera; the brush is installed on the upstream of the industrial camera in the movement direction of the conveyor belt and used for cleaning the conveyor belt; the dust removal air gun is installed close to the industrial camera to prevent dust from falling and contaminating a lens; the synchronous detection wheel is used as a passive wheel to be in contact with the conveyor belt, installed below the conveyor belt, rotates with movement of the conveyor belt, and is used for detecting the moving speed of the conveyor belt; and the PC machine processes collected images, generates a tearing alarm, and displays length, width, depth and position information of longitudinal tearing of the large conveyorbelt, so as to complete detection of longitudinal tearing of the large conveyor belt.

The invention discloses a formal analysis method for parallel system performance. The method comprises: step 1, establishing a parallel program performance model and a parallel machine model; step 2, establishing mapping relations between the parallel program performance model and the parallel machine model, to form a parallel system performance model, and performing parallel system performance analysis. The invention provides the efficient parallel system performance analysis method.

The invention provides a start-stop control system and a control method of a mine conveyer. The start-stop control system comprises an instruction unit, an interlock control module and an operation module. The interlock control module and the operation module are in bidirectional communication connection; and the output end of the instruction unit is connected with the input end of the interlock control module. The control method comprises the following steps: obtaining sequence information and operation speed information of each mine conveyer; sending status instruction information to the interlock control module; calculating operation time information of each mine conveyer; converting the status instruction information into an instruction information frame of each mine conveyer; and driving the corresponding conveyer to operate according to the instruction information frame. According to the technical scheme, start and stop of each mine conveyer can be controlled automatically through the unified control system, thereby reducing physical output of operation personnel, allowing each mine conveyer to start or stop reliably according to preset sequence, simplifying work process, reducing idle running time of the equipment and improving efficiency.

The invention provides a voltage determination method and device for SOC initial value calculation. The method comprises steps that after a BMS is powered on, battery core sampling voltage values at multiple continuous sampling moments are obtained; a sampling average voltage value of the battery core is obtained through a plurality of battery core sampling voltage values; a voltage value of the battery pack is obtained within the sampling time, and a calculated average voltage value of the battery core is obtained through the voltage value of the battery pack; whether a difference value between the sampling average voltage value and the calculation average voltage value is within a first voltage threshold range or not is determined; if yes, whether the standing time before the BMS is powered on is within a first time threshold range or not is determined; if not, an SOC initial value is calculated through the sampling average voltage value. The method is advantaged in that the batterypack voltage is utilized to verify the core voltage, and further determination is carried out through the standing duration of the BMS, so the situation that the SOC initial value is wrong when the voltage is abnormal is avoided, and estimation accuracy of the SOC initial value is improved.

The invention discloses an online shopping delivery automatic ordering method. The method mainly comprises the following steps: a consumer enters an ordering platform through network connection to order a product; the ordering platform gives a list of independent stores or branch stores of chain stores near the delivery place of the consumer for consumer selection; the order data is transmitted to a computer in the selected store through the Internet for displaying; and a notice device sends out a signal to notify a shop assistance to deal with the order; each single ordering requirement data and delivery data of the consumer in the order are automatically printed and output; and after each product in the order is processed, the products are delivered according to the delivery data appointed by the consumer. Therefore, the consumer does not need to record data of the store, and can conveniently enjoy delivery service; misunderstanding condition occurring when people answer the telephone can be prevented, and time spending in ordering can be reduced.