194results about How to "Increase detection function" patented technology

The invention discloses a railway line inspection method. Traveling train information on a railway line is determined by a traveling train information acquisition subsystem and the traveling train information is transmitted to a data and fault processing subsystem. A flight control system is used for controlling a light track and a flight posture of an unmanned aerial vehicle and avoiding movement of a traveling train. A data acquisition subsystem is arranged on the unmanned aerial vehicle and is used for acquiring field data of the railway line and transmitting the field data to the data and fault processing subsystem to be processed; and the field data comprises radar scanning data and field image data of the railway line. The data and fault processing subsystem is used for receiving and analyzing the field data of the railway line and determining types and occurrence positions of faults. With the adoption of the railway line inspection method, the technical problems of an existing railway line inspection manner that the measure is single, the reliability is low, normal traveling is influenced, and requirements on operation safety of high-speed railways cannot be met can be solved.

The invention provides a multifunctional car door inspection tool which comprises a bottom plate, a hinge positioning and inspection unit, a slide table, outer plate positioning and inspection units and a Y direction adjustment screw rod, wherein the hinge positioning and inspection unit matches with the bottom plate in a Y direction and in a sliding mode; the slide table matches with the bottom plate in an X direction and in a sliding mode and is provided with a locking device; at least one outer plate positioning and inspection unit is arranged on the slide table, and a plurality of outer plate positioning and inspection units are arranged on the bottom plate; the Y direction adjustment screw rod is arranged on the bottom plate; and among a plurality of outer plate positioning and inspection units arranged on the bottom plate, at least one outer plate positioning and inspection unit is provided with a pressing block fitting the Y direction adjustment screw rod, at least one outer plate positioning and inspection unit is provided with a X direction adjustment screw rod, and at least one outer plate positioning and inspection unit is provided with a Y direction adjustment screw rod. The multifunctional car door inspection tool can be used for multi-standard car door inspection and is low in cost.

The invention relates to a visual full-parameter wheel alignment detection system and method based on linear array images, and belongs to the technical field of automobile detection and diagnosis. The system comprises four measuring arms and a computer, wherein each measuring arm comprises two linear array cameras, an inclination sensor and other circuit components, one camera is installed on the end part of the measuring arm, and the other camera is installed below the installation shaft of the measuring arm; and both sides of the cylindrical lens of the camera are provided with two light-emitting diodes. The method comprises the following steps: when in detection, clamping the measuring arms onto the corresponding wheels, and acquiring images the cameras in opposite when the light-emitting diodes in the cameras work in a flickering mode; calculating the azimuth angle and distance between the two cameras according to the pixel coordinates and installation intervals of light spot images of the light-emitting diodes; and according to the dimensions, inclination and the like of the measuring arm, calculating all wheel alignment parameters by utilizing the principles of geometry and vector algebra. The invention can simultaneously detect the angle parameters and distance parameters of wheel alignment and realize full parameter detection of wheel alignment.

The invention discloses a message forwarding method and device based on an SRv6 network, a storage medium and an electronic device, an original message is sent by a device A to reach a device B through a plurality of End nodes and at least one NAT device, and the NAT device is located between the two End nodes. The SRH structure is different from a traditional SRH structure, the NAT detection message based on the SR strategy is sent through the End node and is used for public network address learning, meanwhile, an NAT-det type is added into a Next Header of an SRH message extension header, sothat an End operation type End.N of an SRv6 is newly added in an End node; and NAT public network address learning and message packaging during forwarding can be carried out according to different Next Header types, and the problem that in an existing SRv6 communication system, a message cannot be forwarded due to existence of equipment of a private network IP is solved.

The invention discloses a field effect transistor gas sensor and an array preparation method thereof. The field effect transistor (FET) gas sensor is a gate-sensitive FET gas sensor with a gate electrode modified by quantum dots, and a gate-sensitive electrode layer (5) of the FET gas sensor is of a two-layer composite structure or of a single-layer structure made of a composite material. The two-layer composite structure comprises a metal film layer and a quantum dot layer deposited on the surface of the metal film layer. The single-layer structure made of a composite material is specificallya single-layer structure made of a composite material formed by combining quantum dots and a metal or metalloid material. According to the invention, improvement is made on the internal composition and structure of the gate-sensitive FET, the corresponding preparation method and the like, quantum dots are used as a gate electrode and a gas sensitive layer at the same time, and the bias voltage ofthe gate electrode and the channel modulation effect are regulated and controlled by utilizing the adsorption characteristic of a quantum dot gate-sensitive electrode to different gases. A room-temperature gas sensor with high sensitivity, low power consumption and high selectivity can be obtained, and low-concentration target gases (such as H2) can be detected.

The invention discloses an online imprinting detection method and system. The system employs multiple colorful CCD (Charge Coupled Device) cameras and multiple parallel high-speed image collecting, operating and processing systems to detect and timely monitor printing qualities, including the front-side number printing quality, the front-side fluorescent pattern printing quality, the front and back side nominal value printing quality and the watermarking pattern printing quality (inverted note defect detection), for large RMB note products which are printed online; and the detection system emits a related command and an acousto-optic alarm signal the moment that continuous wastes or severe wastes are detected, thereby controlling an imprinting machine to stop running. Operation interfaces of different detection functions are integrated in a terminal display with a big screen for concentrated display, wherein the interfaces are clear, and operation is convenient. Number printing is the last procedure for RMB note printing, the printing quality detection after number printing can be used to verify defects detected in the previous procedures and intercept products missed in detection, thereby ensuring the quality of delivered products, and improving the production efficiency.

The invention relates to a rotating machinery fault simulation platform. The simulation platform is a laboratory device for verification experiment and diagnosis experiment teaching of rotating machinery faults. The rotating machinery fault simulation platform comprises a sliding gear mechanism, a geneva wheel mechanism, a triple sliding gear mechanism, a lead screw nut mechanism and a combination mechanism formed by a worm gear and inner gearing incomplete gear. All the mechanisms are independent to one another, and power can be obtained through a gear pair formed by gears and power gears at the ends of the mechanisms. By means of the rotating machinery fault simulation platform, the problems that it is difficult to replace fault parts in the experiment process, and the experiment function is single and the teaching requirement cannot be met are mainly solved. The integrated building is conducted in combination with the teaching purpose, and the blank of rotating machinery type fault experiment in colleges and universities is filled; based on construction of machinery transmission and test devices of certain existing machinery type experiment platform, the reliability, practicability and usability of the novel rotating machinery fault simulation platform are improved beneficially, and the experiment platform is made to have good popularization value.

A method for controlling X-ray crack detector includes adding X-ray dosage detection-control unit on existing X-ray crack detector to let said detector have detection-control function of radiation dosage for displaying dosage rate and accumulation dosage of radiation in real time, enabling to convert accumulation dosage to be blackness value of film for controlling exposure parameters so as to have optimum imaging-result.

The invention discloses a system for detecting sediment content by adopting capacitive differential pressure sensors. The system comprises a water sample pretreatment system, a signal acquisition system, a control treatment system, and a touch screen display system, wherein the systems are orderly connected, the touch screen display system is connected to a data transmission system; the data transmission system is connected with a configuration monitoring system; the signal acquisition system comprises a depth sensor, a sediment content sensor, a flow velocity sensor, a water temperature sensor and an analog quantity input/output module; and the depth sensor, the sediment content sensor, the flow velocity sensor and the water temperature sensor are connected with the analog quantity input/output module respectively; and the analog quantity input/output module comprises four analog signal input channels. The system comprehensively considers a plurality of environmental factors, realizes the high-accuracy sediment content measurement, can be applied in the field of general river sediment detection, and can also be applied in fields such as water quality management of reservoir areas and channel cleanout of yellow river basin, sludge discharge management of sewage treatment plants and the like.

The invention discloses a method for processing the failure of a node supported by GPRS service, which comprises the following steps: a. a major SGSN and at least one stand-by SGSN are configured; b. the major SGSN and the stand-by SGSN respectively set up a physical link and an NSVC link with a BSC, and the stand-by SGSN obstructs the NSVC link between a home terminal and the BSC; the major SGSN carries out the sending and receiving of grouped data; c. the stand-by SGSN detects the state of the major SGSN at a regular time; if the SGSN is detected to be unavailable, the NSVC link between the home terminal and the BSC is not obstructed; switching to the major SGSN is carried out, and the sending and the receiving of mobile grouped data are carried out. By optimizing the configuration of the stand-by SGSN and increasing the link detection function of the major SGSN and the stand-by SGSN, the method of the invention causes the stand-by SGSN to be capable of automatically taking over a service without upgrading the BSC in a large area when unpredictable abnormity of the major SGSN occurs, thereby reducing operation cost and improving the reliability of SGSN failure.

The invention discloses an electrochemical analyzer with wireless transmission function, which is used for connecting equipment with wireless transmission function such as a computer and executing electrochemical signal collection, transmission and treatment. The electrochemical analyzer comprises an electrode control unit, a data collector, a processor, a wireless transmission module, a signal generator and a power supply module. The analyzer can independently operate when the computer connected therewith is turned off or the connection is disconnected and store the collected data in a memory of the analyzer, and the stored data can be updated when the connection is reestablished. The analyzer can be used for remote continuous monitoring of waste water and gas and for electrochemical analysis and detection in harmful environments such toxic, high-temperature and radiation environment. Specifically, the analyzer can be used in combination with miniature electrochemical sensor to construct a miniature electrochemical data wireless collection system or disposed in other instrument or equipment for adding electrochemical analysis and detection function therefor.

The composite invention discloses a storage battery with simultaneously rechargeable unit cells and a multipath parallel-connected charger, and aims to provide a more ideal storage battery and a corresponding charging method for electric automobiles. The storage battery with simultaneously rechargeable unit cells comprises a storage battery shell, a positive plate, a negative plate, a separation plate, a positive bus bar, a negative bus bar, a gap bridge, a tab, an upper cover, electrolyte, a power circuit, a positive and negative pulse charging circuit, a unit cell detection circuit, a central processing unit (CPU) main control circuit and a power control circuit; a pole at the upper end of the rechargeable gap bridge of the storage battery passes through a connecting hole on the upper cover of the storage battery and then is connected with a charging lead wire by a screw, so the unit cells of the storage battery can be charged; and the same number of relatively independent charging power supplies are made for the charger according to the number of the unit cells of the storage battery. By the storage battery with the simultaneously rechargeable unit cells, the charging speed is increased, and the charging time is shortened, so the voltage of the storage battery or the storage battery group is more balanced or more sufficient; and adverse influences that some unit cells are overcharged and heated and some unit cells are charged insufficiently when the unit cells of the storage battery are charged in the conventional serial charging mode are eliminated.

A method for learning an object detector based on an R-CNN by using a first to an n-th filter blocks respectively generating a first to an n-th feature maps through convolution operations in sequence, and a k-th to a first upsampling blocks respectively coupled with the first to the n-th filter blocks is provided. The method includes steps of: a learning device instructing the k-th upsampling block to the first upsampling block to generate a (k−1)-st pyramidic feature map to the first pyramidic feature map respectively; instructing an RPN to generate each ROI corresponding to each candidate region, and instructing a pooling layer to generate a feature vector; and learning parameters of the FC layer, the k-th to the first upsampling blocks, and the first to the n-th filter blocks by backpropagating a first loss generated by referring to object class information, object regression information, and their corresponding GTs.

The invention discloses a mid-latitude ionized layer detection method based on a high-frequency ground wave radar. The method comprises the following steps: step 1, according to an echo RD spectrum ofa high-frequency ground wave radar under an FMPCW system, estimating the electron concentration of an ionospheric irregular body through a function relationship that the echo power of the ionosphericirregular body is in direct proportion to the electron concentration of the ionospheric irregular body in combination with an IRI model or a vertical measuring instrument; step 2, estimating the plasma frequency of the ionospheric irregular body according to the electron concentration estimation of the ionospheric irregular body; and step 3, according to the RD spectrum of the high-frequency ground wave radar echo, estimating a refraction index of the high-frequency ground wave radar echo through the ionospheric irregular body plasma frequency estimation value, and then correcting an irregular Doppler frequency shift to realize estimation and variance estimation of the irregular body drift speed along the radial direction of the radar. The ionospheric detection function is added to the existing high-frequency ground wave radar, and a novel application field of the high-frequency ground wave radar is developed.