60results about How to "Convenient and accurate determination" patented technology

The invention discloses a method for establishing a high-throughput sequencing library and an application thereof. The method for establishing the high-throughput sequencing library comprises the following steps of: conducting DNA (Deoxyribose Nucleic Acid) fragmentation on a genome; conducting end repairing on DNA fragments; adding a basic group A to a 3' end of the DNA ends subjected to end repairing; connecting the DNA fragments with sticky ends A with methylated joints; conducting hybridization capture on the connection products by using a specific probe so as to obtain target fragments; conducting bisulfite treatment on the target fragments so as to convert non-methylated cytosine in the target fragments into uracil; conducting PCR (Polymerase Chain Reaction) amplification on the converted target fragments; separating and purifying the amplification products; and establishing the high-throughput sequencing library by using the amplification products. By utilizing the method for establishing the high-throughput sequencing library and the application thereof, the high-throughput sequencing library of a specific genome area of a sample can be conveniently and effectively established.

The invention relates to a pavement roughness detection system and method, wherein the system comprises at least one reference target, arranged above a to-be-measured pavement; at least one line structured light sensor, used for casting line structured light to the to-be-measured pavement and shooting a light bar image of the line structured light, formed on the to-be-measured pavement; and a computing device, connected with the line structured light sensor; the computing device converts the light bar image received from the line structured light sensor into three-dimensional data, according to the reference target, the three-dimensional data of the to-be-measured pavement is modified, and according to the modified three-dimensional data, the roughness of the to-be-measured pavement is determined. By use of the line structured light sensor for capturing the light bar image of the to-be-measured pavement, then the light bar image is converted into the three-dimensional data, according to the reference target, the three-dimensional data of the to-be-measured pavement is modified, and the roughness of the to-be-measured pavement can be conveniently and accurately determined.

The embodiment of the invention provides a positioning method, device and system, and relates to the technical field of electronics. The accuracy and efficiency of wiping a printing plate are improved. The scheme includes the steps that if a substrate comprises a bad point position, the positioning device obtains first coordinate information, in a substrate coordinate system, of the bad point position, and the first coordinate information is used for indicating the position, on the substrate, of the bad point position; according to the preset coordinate corresponding relation between the substrate coordinate system and a printing plate coordinate system, the positioning device converts the first coordinate information into second coordinate information in the printing plate coordinate system, and the second coordinate information is used for indicating the position, corresponding to the bad point position on the substrate, of the printing plate; the positioning device outputs a position signal, corresponding to the second coordinate information, on the printing plate. The scheme can be used for positioning the bad point position on the printing plate.

The invention relates to a nondestructive testing method and a nondestructive testing device for a crack of a metal part. The nondestructive testing method for the crack of the metal part comprises the following steps of (1), connecting the two ends of a to-be-tested part with a direct-current power supply, and enabling an infrared lens of an infrared thermal imager to face the to-be-tested part; (2), selecting the time and the size that the to-be-tested part is subjected to the direct-current power according to the dimension and the material property of the to-be-tested part and a position where the crack damage exists, and electrifying the to-be-tested part; (3), after the electrification of the to-be-tested part is completed, observing and imaging the electrified to-be-tested part through the infrared thermal imager, showing that the crack does not exist in the to-be-tested part if an imaged image is in a same color, and showing that the crack exists in the to-be-tested part if the imaged image is in different colors. As a circumferential motion effect and a Joule heating effect are adopted for the nondestructive testing method and the nondestructive testing device for the crack of the metal part, higher temperature rises can be automatically generated at the position of a crack tip by both the circumferential motion effect and the Joule heating effect, and the position of the crack damage of the part is easily and accurately determined. In view of reasons above, the nondestructive testing method and the nondestructive testing device for the crack of the metal part can be widely used for the field of the nondestructive testing of metal cracks.

The invention relates to a method and system of reducing a hierarchical access direct current commutation failure risk. The method of reducing a hierarchical access direct current commutation failure risk includes the steps: determining a key fault set influencing a hierarchical access direct current inversion side converter station; adjusting reactive power output of dynamic reactive compensation equipment, performing time domain simulation on the key fault set, and calculating the reactive voltage control sensitivity of a dynamic reactive source; sorting m reactive voltage control flexibilities, and calculating the weight coefficient of the dynamic reactive source; and after calculating the reactive standby capacity of the dynamic reactive source based on the weight coefficient, establishing a dynamic reactive standby optimization model, and utilizing an inner point method to solve the dynamic reactive standby optimization model to obtain the optimized reactive standby capacity. The method and system of reducing a hierarchical access direct current commutation failure risk can provide an optimization model for reducing the hierarchical access direct current commutation failure risk, can improve the transmission capability of the alternating and direct current power transmission channel, and has significant meaning for improving operation stability of power grid.

The invention discloses a program play control method and device, relates to the technical field of a frontend application of an internet television. The technical problem that in the prior art, a user cannot control program play under the condition that a remote controller cannot be found or a battery of the remote controller is powered off due to the fact that the dependence on the remote controller is high when the program play is controlled is solved. The method comprises the steps of in the process of playing a video program, identifying a gesture feature when the user waves a gesture; determining corresponding play control information according to the identified gesture feature; and controlling the video program according to the play control information, wherein the control comprises play progress control and voice adjustment control.

The invention belongs to the technical field of antenna control, and discloses a CAN bus-based antenna lodging control device, including a main control circuit, an isolated CAN communication circuit, an angle detection circuit, a motor drive circuit and a motor; the isolated CAN communication circuit also has a function for connecting Data interface of external equipment; isolated CAN communication circuit, angle detection circuit, and motor drive circuit are all connected to the main control circuit; the drive end of the motor is connected to the motor drive circuit; the external angle control command is received through the isolated CAN communication circuit and passed through the main control circuit Control the motor drive circuit to drive the motor to drive the antenna lodging, detect the antenna lodging angle in real time through the angle detection circuit, and control the motor drive circuit to drive the motor to adjust the operation according to the lodging angle detection value through the main control circuit to achieve precise adjustment of the antenna lodging angle ; The CAN bus-based antenna lodging control device provided by the present invention has a communication control function and an angle control feedback function.

The invention provides a body position icon. The body position icon is located at the position, used for identifying ultrasonic examination, of an ultrasonic display interface and is a three-dimensional body position icon; the invention further provides a control device and equipment for the body position icon. By means of the body position icon, different positions of the three-dimensional body position icon can be marked according to a probe, thereby an operator can determine the examination position conveniently and accurately, operation convenience of doctors is improved, and meanwhile the aesthetic effect is enhanced.

In order to determine a signal offset (OFF_SIG) of a pitch rate sensor of a vehicle (2), a signal (OMEGA_TETA_SIG) from the pitch rate sensor is detected. Longitudinal acceleration (ACC) of the vehicle (2) is determined. A time derivative (ACC_DRV) of the longitudinal acceleration (ACC) is determined. A check is carried out in order to determine whether a magnitude of the time derivative (ACC_DRV) of the longitudinal acceleration (ACC) is less than a first predefined threshold value (THD_1). The signal offset (OFF_SIG) of the pitch rate sensor is determined on the basis of the signal (OMEGA_TETA_SIG) from the pitch rate sensor if the magnitude of the time derivative (ACC_DRV) of the longitudinal acceleration (ACC) is less than the first predefined threshold value (THD_1).

The invention provides an integrated pouring type composite fireproof glass and a preparation method thereof. The fireproof glass comprises at least two pieces of plate glass, a whole glass pressing strip is arranged between the two pieces of plate glass, the glass pressing strip is perpendicular to the two pieces of plate glass, the glass pressing strip surrounds the periphery of the two pieces of plate glass, a cavity is formed by the glass pressing strip and the pieces of plate glass, and the cavity is filled with a fireproof liquid; and the contact surfaces of the glazing strip and the pieces of plate glass are internally bonded and sealed.

The invention provides a time synchronization method and device and electronic equipment, and the method comprises the steps: initiating a synchronization request to a classroom server, and determining the local initiation time; receiving a response message returned by the classroom server, and determining local receiving time, wherein the response message comprises server response time; determining a time error between the local client and the classroom server according to the local initiating time, the local receiving time and the server response time, and determining target time according to the time error; and executing a corresponding operation according to the target time. Through the time synchronization method and device and the electronic equipment provided by the embodiment of the invention, the time error between the local client and the classroom server can be conveniently and accurately determined under the condition of not paying attention to the specific size of the network delay; and thus, the local client can determine the target time matched with the server time of the classroom server. The method is simple in calculation and high in accuracy.

The invention discloses an optical fiber detection device for monitoring the flowing direction and the flowing speed of underground water in an observation well. The device comprises a device shell (1); an electronic compass (3) is movably arranged in the device shell (1); the lower part of the electronic compass (3) is connected with a connecting pipe (7); the lower part of the connecting pipe (7) is connected with a steering fan (6) in a vertical direction; the center of the electronic compass (3) is hollow, a steel pipe (8) penetrates through the center of the electronic compass (3) and isfixedly connected with the device shell (1) and used for fixing an optical fiber (2), the steel pipe (8) and the optical fiber (2) penetrate through the connecting pipe (7), and the lower end of the device shell (1) is connected with an optical fiber support (10) used for fixing a lower endpoint of the optical fiber (2). The optical fiber detection device for monitoring the flow direction and theflow speed of the underground water in the observation well is low in cost, not prone to being interfered by the surrounding electromagnetic environment and more accurate and stable by being comparedwith a common probe.

The invention discloses a method and a device for identifying a type of a DNS tunnel upper layer protocol. The method comprises the steps of: acquiring first feature information of a to-be-detected DNS tunnel based on the traffic of the to-be-detected DNS tunnel; and inputting the first feature information into a trained identification model used for detecting the type of an upper layer protocol of the DNS tunnel, so as to determine the type of the upper layer protocol used in DNS tunnel traffic to be detected. According to the method and the device, the identification model for detecting thetype of the upper layer protocol used in the DNS tunnel traffic is obtained through model training, the identification model is used for detecting the DNS tunnel traffic, so that the type of the upperlayer protocol used in the DNS tunnel traffic can be conveniently and accurately determined, and malicious behaviors in the DNS tunnel can be further subjected to evidence collection and analysis.

An apparatus and a method for monitoring a temperature of a cable joint (201) of a cable (200) connected to a gas insulated switchgear (300). The apparatus comprises an adaptor (101) adapted to be coupled to a cable socket (31) of the switchgear, the cable socket being provided with a mounting hole (311) for connecting the cable joint, the mounting hole being provided at a mounting surface (312),wherein the adaptor, when coupled to the cable socket, is situated at the mounting surface and outside the mounting hole; a temperature sensor (102) arranged in the adaptor and configured to detect atemperature of the adaptor; and a processor (103) configured to determine the temperature of the cable joint based on the detected temperature of the adaptor. Then the temperature of the cable joint may be determined conveniently and precisely.

The invention discloses a positioning device convenient in mine drilling position seeking. The positioning device comprises a hole position indicating rod. A hanging ring is disposed at the upper end of the hole position indicating rod. A sleeve is disposed on the hole position indicating rod. At least three support legs are disposed at the outer edge of the sleeve. Each support leg includes an upper support leg and a lower support leg which are connected through a threaded shaft, and a ball-shaped support part is disposed at the bottom of the lower support leg. The positioning device further comprises a position sensing device disposed on the hole position indicating rod. The position signals of the position sensing device is received by a receiver. The positioning device is simple in structure, convenient to machine, low in cost, convenient to use, convenient to store, wind resistant and falling resistant, recyclable, and capable effectively increasing work efficiency.

The invention provides an automatic lamp searching method of an intelligent evacuation system and aims at accurately, simply and conveniently searching intelligent evacuation emergency illumination lamps and evacuation indicating lamps in the system and reflecting the specific installing positions of the intelligent evacuation emergency illumination lamps and the evacuation indicating lamps in passageways in the intelligent evacuation system. The automatic lamp searching method comprises the following steps that intelligent indicating lamps are cured with unique physical codes, and the surfaces of lamp bodies are provided with bar codes, two-dimensional codes or physical node digits corresponding to the physical codes. When the system operates for the first time, the mainframe automatically searches all the intelligent evacuation emergency illumination lamps and evacuation indicating lamps subordinate to the system, all the intelligent indicating lamps upwards feed back their physical code information, a mobile terminal performs interactive communication with the mainframe through a mobile network, provides a code scanning and identifying function or/and a manual inputting function and calls out corresponding setting interfaces of the intelligent evacuation emergency illumination lamps and the evacuation indicating lamps according to identified or used-input physical codes, input items of the installing positions are provided on the setting interfaces, and setting information containing the physical codes and the installing positions is submitted to the mainframe after lamp settings and installing position entering are completed.

The embodiment of the invention provides a method and system for configuring remote control function data according to an image of remote control equipment. The method comprises the steps of obtaininga first image of the remote control equipment, and determining a first feature based on the first image, wherein the first feature comprises a key layout feature of the remote control equipment; anddetermining remote control function data corresponding to the remote control equipment based on the first feature. By identifying the image of the remote control equipment and determining the corresponding remote control function data according to the key feature layout, the remote control function data can be configured more conveniently and accurately, and the user experience is improved.