170results about How to "Avoid unreliability" patented technology

A method for realizing light multicast in intelligent light network includes forming user group management base by utilizing service management module in management layer; applying light multicast mechanism managed by management layer and control layer and utilizing manner of dynamically setting up multicast route, adding and deleting leaf node, summing ¿C up link and setting up connection one by one to achieve light multicast on large network for saving a lot of routes and bandwidth.

The invention discloses a controller area network (CAN) bus-based anti-electromagnetic interference method and a CAN bus-based anti-electromagnetic interference device, which belong to the technical field of battery electric vehicle buses. Each control unit of a battery electric vehicle shares all information and resources by a CAN bus so as to fulfill the aims of simplifying wiring, reducing the number of sensors, avoiding the repetition of control functions, improving the reliability and maintainability of a system, reducing the cost and better matching and coordinating each control system. The key for well control over the battery electric vehicle is the reliability of CAN bus communication. The battery electric vehicle is a high-mechatronics product, and the whole system may generate a great number of high frequency signals when working to influence the normal communication of the CAN bus. The method and the device aim to improve the anti-interference capability of the CAN bus; and an anti-interference circuit is designed by utilizing the principle of CAN bus transmission, and a common mode choke is arranged to filter common mode electromagnetic interference on a signal wire and suppress the external transmission of own electromagnetic interference so as to greatly improve the reliability of the CAN bus communication.

The invention discloses a crank torsion sensing device and a crank torsion detection method. The crank torsion sensing device is arranged at a five-way shaft of a power-assisted electric vehicle; a backward pull is generated at the pivot of the five-way shaft through a reacting force borne by a chain driven by a big fluted disc when a pedal is treaded, and the torsion value generated when the pedal is treaded can be acquired by measuring the magnitude of the backward pull; and the magnitude of the backward pull borne by the five-way shaft is acquired on the basis of the similar principle of a spring platform scale, by measuring the displacement of the five-way shaft and according to the set elasticity coefficient and the deformation of a spring. The displacement generated by the five-way shaft due to stress enables a detector to generate a voltage or current signal, the electric signal is used as a sensing control signal, and the control signal can determine the magnitude of the driving power, so that the purpose of power-assisted drive is fulfilled.

The invention discloses an encrypting and decrypting method and system in a TR069 comprehensive terminal management platform, including that a transmitting terminal generates a random and calculates random<-1>mod(n); the information m to be transmitted is switched to get the abstract information M is equal to h(m); the abstract information M is encrypted by using a private code da to get the encrypted abstract information Cm and calculate the parameter s that is used for authentication and is equal to k( M plus da ramdom) mod(n); by using a private code d of 256bit and a 256bit grouping length Rijndael algorithm to encrypt the information ( m plus Cm) to get a complete cryptograph C and calculate kP that is equal to (x1, y1), y is equal to x1 mod(n); ( C, y, s) is transmitted to a receiving terminal; wherein, the C is the cryptograph after being encrypted by 256 bits of encrypting intensities and the y and s refer to the authentication information. The invention solves the unreliable problem caused by using an RSA algorithm.

The invention discloses a delivery device of a vending machine and a delivery mode of the delivery device. The delivery device comprises a lifting platform connected with a lifting mechanism, a lifting-platform goods receiving box in butt joint with a storage shelf is arranged on the lifting platform, and an opening used for receiving and discharging goods is arranged in one side of the lifting-platform goods receiving box; a synchronous belt arranged on the bottom surface of the lifting-platform goods receiving box and is driven through a motor arranged at the bottom of the lifting platform and used for receiving and transferring the goods; a flexible protective cover used for isolating outer interference is mounted on the lifting platform; when the lifting platform is operated to the position where the storage shelf receive the goods and the goods are transferred to the lifting platform from the storage shelf, and the lifting platform is controlled to shake vertically in a small range through a computer pulse counting mode, so that the goods on the lifting platform are safer in position; failure rate of the lifting platform is greatly reduced, reliability in selling of the lifting-type automatic vending machine is guaranteed, and market popularity of the lifting-type automatic vending machine is improved.

The invention discloses a method for achieving dual-network hot standby redundancy of a blank pipe automatic system. The method comprises the steps of establishing network hardware connecting topology, establishing network state monitoring process in an application layer of a control procedure of each machine, establishing a working net switching control procedure in a network monitoring procedure of each machine, establishing a redundancy sending operation procedure at the data sending end of each machine, establishing a data filtering control procedure at the receiving end of each machine, establishing a network state monitoring terminal and the like. The method has the advantages that a distributed network monitoring mechanism is adopted, the network state is monitored in real time, and the automatic switching speed of a network is high; two three-layer exchangers are in cascade connection so that when one of the networks of each machine is normal, communication between the two sides can be conducted and the cross fault can be avoided; in terms of data transmission, data are simultaneously sent to the main network and the standby network of each receiving end by one sending end, and redundancy of the data on the main network and the standby network is achieved; due to the filtering of data numbers and timestamps, a repeat and leakage of data receiving are avoided and the effectiveness and the seamlessness of switching are guaranteed.

The invention discloses a method for determining the diameter of a high-pressure rotary jet grouting pile based on a circular free turbulent jet theory. The method comprises the following steps of: determining soil layer parameters through a geological survey method so as to determine a critical damaging speed of a soil layer; determining a flow speed of cement slurry at a nozzle outlet and a decay coefficient of the flow speed of the cement slurry along a spraying distance according to construction parameters; and finally, accurately determining the diameter of the high-pressure rotary jet grouting pile, thereby bringing about convenience for the construction of a high-pressure rotary jet design. Based on the circular free turbulent jet theory, the unreliability of the diameter of the high-pressure rotary jet grouting pile which is determined by pure experience previously is avoided by comprehensively considering the influence of the soil layer parameters and the parameters of high-pressure rotary jet construction on the diameter of the high-pressure rotary jet grouting pile when the high-pressure rotary jet grouting pile is constructed. In the actual application of the method provided by the invention, compared with the traditional method, the method has the advantages that the judgment and the predication on the diameter of the high-pressure rotary jet grouting pile can be more accurate and the method is simpler. The method is applicable to determining the diameter of a high-pressure rotary jet reinforcement body in the high-pressure rotary jet design.

The invention discloses an electromagnetic lead screw driving type precise-punching presser which comprises a presser body, a working platform, a controller and a stand, wherein the presser body is fixed on the working platform; the stand is arranged above the working platform, and is movably connected with the stand through a connecting plate. The stand is provided with an electromagnetic lead screw system which comprises an electromagnetic nut and a punch shaft. The electromagnetic nut is fixed on the stand, and comprises two circular cores. Each circular core is divided into two parts by a coil. A circular permanent magnet is clamped between the two cores. The punch shaft penetrates through the stand and the electromagnetic nut, and has a gap with the electromagnetic nut. Threads which have the same pitch are processed at the inner hole side of the circular core and the part of the punch shaft. The controller is used for controlling the density, the frequency and the phase of the current in the coil. The invention has the advantages of adjustable speed and punch force, quick response, high guiding and positioning precision, simple structure, convenient control, less component consumption, low noise, convenient maintenance and long service life.

The invention discloses a recording data-based power transmission line fault accurate judgment method. The method comprises the following steps of: S1, bus-bar automatic matching; S2, zero-sequence analog signal reverse connection intelligent identification and correction; S3, whole analog signal-based circuit breaker tripping judgment; S4, boundary prediction method-based fault reference point screening; and S5, bus-bar voltage disturbance feature identification-based anti-error locking. The method of the invention can adapt to the random change of the operation mode of a power grid and is compatible with channel reverse connection phenomena which easily occur in field electrical construction. With the method adopted, the problem of inadequate judgment basis caused by the absence and incompleteness of core state quantity signal configuration parameters can be solved; the problem of high unreliability of a method using a single fault reference point in the prior art can be solved; threats imposed by the interference of a variety of kinds of simulation signals in a substation test can be eliminated; the accuracy of fault line judgment can be greatly improved; and the requirements of the management and operational characteristics of a power system can be well satisfied.

The invention discloses a method, equipment and a system for detecting a display screen without a video signal. The method comprises the following steps of: capturing an image of the whole screen of a display screen to be detected; calculating a histogram of the captured image; determining an image, of which the histogram meets the preset distribution, as a candidate image; judging whether adjacent candidate images are similar based on the distance between the histograms of the adjacent candidate images; and outputting a signal which shows that a video signal is absent in the display screen under the condition that the number of similar continuous candidate images reaches the preset value. By the scheme, the detection reliability and detection precision can be improved.

The invention relates to the field of the medical microecology, in particular to a new vaginal microecological evaluation system and a reagent kit used for measuring and evaluating the vaginal microecology; the vaginal microecological system of the invention comprises the evaluating items that: the intensity of flora, the diversity of flora, dominant bacterium and reason bacterium; by using the system of the invention, three vaginal inflammations of BV, VVC and trichomoniasis which are common in clinic can be diagnosed fast at one time, and the problem existed in the vaginal microenvironment of patients with vaginal inflammation can be found; the most important is that microecological evaluation can be carried out for the patients with vaginal inflammation which comprises symptoms of increasing leucorrhea and pruritus vulvue, etc. without special pathogenic bacteria in the current clinic and is hard to diagnose by the existing method, the clinic drug is guided and evaluation is prognosed, thus achieving the purpose of guiding the clinical treatment.

The invention discloses a method and a system for association analysis of transcriptome and metabolome data. The method comprises the following steps of S1, performing transcriptome sequencing on a sample, performing bioinformation analysis on the transcriptome data for obtaining a differential expression gene; S2, performing metabolome sequencing on the sample, and performing bioinformation analysis on the metabolome data for obtaining a differential metabolite; and S3, performing bioinformation analysis on the association characteristic based on the obtained differential expression gene andthe differential metabolite. The method and the system settle problems of one-sidedness of single omic sequencing data and low reliability of partial data in prior art. Furthermore, according to the method and the system, through information transmission, cooperation and coordination between biomolecules, a specific function is presented, thereby realizing more systematical multi-omics integratedanalysis and facilitating discloses of a complicated function mechanism.

The invention provides a method for determining a soil permeability coefficient on the basis of piezocone sounding. The method includes steps of firstly, determining the depth of a piezocone sounding hole, the radius of a conical head and the underground water level of a field according to a piezocone sounding report and determining division of soil layers by a Robertson soil layer classification map; secondly, acquiring soil samples from the different soil layers, testing densities of the soil samples and determining unit weights of the soil layers; thirdly, determining piezocone sounding standard parameters which include pore water pressure ratios and standard tip resistance according to parameters obtained in the first step and the second step; fourthly, determining a permeability coefficient index according to the piezocone sounding standard parameters acquired in the third step; fifthly, determining coefficients of the soil layers in initial radial distribution of excessive pore pressure according to the division of the soil layers; and sixthly, determining the soil permeability coefficient according to results obtained from the first step, the second step, the third step, the fourth step and the fifth step. The method has the advantages that the soil permeability coefficient can be accurately determined, and the method brings great convenience for survey and design for soil permeability.

The invention relates to a full-hardware network interface applied to a very long baseline interferometry (VLBI) hardware related processor. The full-hardware network interface is used for enabling the hardware related processor to receive data from an outside data playback device, namely a client side. The full-hardware network interface comprises a top module, an Ethernet protocol layer, an internet protocol (IP) layer and a transmitting layer which are arranged in a descending order. The top module comprises a first first input first output (FIFO), a second FIFO, a protocol packaging module, a first input first output with locallink interface standard (LLFIFO), an Ethernet media access control (TEMAC) module and a physical layer chip, wherein the protocol packaging module is connected with the first FIFO and the second FIFO; and the LLFIFO, the TEMAC module and the physical layer chip are sequentially connected with the protocol packaging module. The function of the network interface can be achieved through a full-hardware mode based on a field programmable gate array (FPGA) chip, so that the purpose that the hardware related processor receives the data from the outside data playback device and processes the data is achieved.

A method for controlling a pluggable port on an interface board of a communication device, pre-setting; the process of controlling the port includes: the communication device receiving an external inputted password and verifies the received password according to a pre-set password; the communication device enables or disables the pluggable port according to the verification result. Also disclosed is an interface board with a pluggable port, the line(s) connecting with the pluggable module includes one or more switches, after verification by the above-mentioned method, control the pluggable port on the interface board to be enabled or disabled by controlling the switch(es) according to the verification result. The present invention can efficiently avoid the false or illegal use of the pluggable ports of the interface board, thereby guaranteeing the stability and reliability of the communication device and the communication network.

The invention discloses a method and a system for monitoring and detecting a target based on a fuzzy algorithm. The method comprises the following steps of: acquiring a target image and a background image; extracting differential characteristic parameters between the target image and the background image; dividing the current picture into a plurality of small regions of interest (ROI), and calculating image gray difference between a background and a plastic target as well as between the background and a die cavity target in the small ROI by using a difference algorithm; detecting target similarity; counting target occurrence parameter values in each small ROI according to the extracted differential characteristic parameters, and respectively accumulating target and non-target characteristic parameters in respective small ROI during counting; judging the target; and performing decision possibility judgment of target non-occurrence and target occurrence according to the counted parameter values of the target. By the method and the system, the calculation amount is reduced, the calculation speed is high, and the requirement for real-time detection is ensured; and the counted parameters are judged by adopting fuzzy mathematics, so that the reliability of target identification and detection is improved, and the contradiction between the speed and the effectiveness is effectively solved.