37results about How to "Realize recurrence" patented technology

The invention discloses a method for data storage during abnormal power down of a computer. The method comprises the steps that a PSU gives out power down warning signals to a mainboard CPLD before the power down; the mainboard CPLD sends a request for triggering synchronization to a PCH; the PCH sends a synchronizing signal to all CPUs after receiving the request; each CPU writes data in a Cache into a DRAM after receiving the synchronizing signal, and then sends a write-in completing mark to a controller of a mixed cache after write-up operation; when the controller detects the write-in completing mark, all the data in the DRAM are transferred to an NVM, and a storage completing signal is sent to the PCH after data transfer is completed; the PCH writes in a marking state of abnormal power down shutdown in an internal memory. According to the method for the data storage during the abnormal power down of the computer, when the computer powers down suddenly, running data of the computer can be stored in the NVM, when a system is restarted, the data can be read from the NVM, and reproduction of an accident site can be achieved, and losses of a user are reduced.

This invention discloses an automatic test method for CDMA cell phone software and a device, among which, the method includes the following steps: simulating CDMA cell phone keys by computer and generating related test scripts in the computer to be analyzed and translated to control orders for CDMA cell phones, transferring said orders to the CDMA cell phone via the computer serial interface, said cell phone responds to related key actions and feeds back the related response information to the computer to judge if a fault happens based on the response information, which can replace large quantities of artificial operations and effectively relicates events of small probabilities in the test to cell phone software so as to position the fault point of the software.

The embodiment of the invention provides a bullet screen issuing method for live broadcast playback, and the method comprises the steps: receiving a barrage pull request sent by a client during live broadcast playback, the bullet screen pull request carrying a timestamp; and in response to the bullet screen pulling request, issuing a bullet screen fragmentation file corresponding to the timestampin N bullet screen fragmentation files to the client, wherein the N bullet screen fragmentation files are obtained by segmenting live bullet screen data corresponding to the target live broadcast playback video, and N is a positive integer. According to the embodiment of the invention, the live broadcast bullet screen data corresponding to the target live broadcast playback video is segmented, andthe bullet screen fragmentation file is issued to the client in a fragmentation manner, so that the memory occupation rate of the bullet screen data is reduced, and the playing fluency is improved.

The invention provides a temperature tactile representation device with variable heat capacity, which is provided with a semiconductor cooler, a radiator, two temperature sensors and a measurement and control circuit, wherein the semiconductor cooler is used as a core of temperature control and hand perception, and consists of a P-N structure which is energized with direct current and is provided a cold end surface and a hot end surface; the radiator comprises a switch chamber with a cavity and a cooling liquid-gas two-path switching system, the cooling liquid switching system feeds cooling liquid to the cavity of the switch chamber by a cooling liquid groove via pipelines, and the switch chamber is communicated with the cooling liquid groove via a cooling liquid outlet pipeline; the gas path switching system switches air by an air inlet pipeline and an air outlet pipeline which are communicated with the cavity of the switch chamber; the pipelines of the cooling liquid-gas two-path switching system are respectively provided with an electromagnetic valve and a pump which are in connection with output control signal of the measurement and control circuit; the measurement and control circuit has a well-known power supply circuit, an analog-to-digital conversion circuit, a signal conditioning circuit and a control chip; and the two temperature sensors are respectively used for collecting temperatures of hand and the semiconductor cooler and outputs the temperatures to the measurement and control circuit.

The invention discloses an automatic test system and method for switching equipment in a rail transit system. The system comprises a test control module used for performing test control, an equipmentmanagement module used for managing accessed network device and more than one piece of test equipment used for executing tests. The test control module is connected with the test ends of the test equipment and the tested equipment through the equipment management module. The debugging end of the tested equipment is connected with the test control module, and the test control module configures thetest equipment and the connection between the tested equipment through the equipment management module so as to carry out required network topology configuration and controls the test equipment to test the tested equipment according to a required test task. The method can achieve the automatic testing of the switching equipment in the rail transit system, and has advantages of wide testing range,high testing efficiency and testing precision, and facilitating the implementation of complex topology testing and case reproduction.

The invention provides an SVG control hardware-in-loop simulation platform and simulation method. The SVG control hardware-in-loop simulation platform comprises a workstation, an SVG controller and areal-time simulator; the real-time simulator is used for simulating an SVG circuit topology model and model parameters to carry out disturbance tests on the grid voltage of the sending end system of anew energy base, and verifying whether the SVG controller is off-grid or not; the real-time simulator is connected with the workstation and the SVG controller; the workstation is used for issuing a test instruction to the real-time simulator based on the disturbance tests of the power grid voltage of the sending end system; the workstation is also used for acquiring test process information executed by the SVG circuit topology model based on the test instruction through the real-time simulator to monitor the test; the disturbance tests of the grid voltage of the sending end system comprise ahigh-voltage ride through disturbance test, a low-voltage ride through disturbance test and a commutation failure disturbance test; simulation and reproduction of an on-site transient working condition are realized; the transient operation characteristics of the reactive power compensation device of the new energy base can be mastered; and a reasonable new energy grid-connected equipment operationcontrol strategy is provided.

The invention discloses a driving recorder with an information prompting function. The driving recorder is provided with a central processing unit, a camera circuit, a screen circuit, a storage circuit, a power supply circuit, a gravity sensing circuit and an FM (Frequency Modulation) transmitter; the driving recorder is internally further provided with a vehicle speed detection circuit; the vehicle speed detection circuit comprises a vehicle speed sensor and a pulse acquisition circuit, which are connected with each other; the pulse acquisition circuit is connected with the central processing unit; the pulse acquisition circuit is internally provided with a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a triode VT1, a capacitor C1 and an optical coupler IC1; and the vehicle speed detection circuit for detecting a vehicle speed can be used for carrying out vehicle speed detection in real time, and the most accurate data is provided for real-time vehicle speed broadcasting of an automobile audio system, so that traffic accidents caused by overspeed are avoided and effective guarantees are provided for safe driving of drivers.

The invention discloses a method for acquiring a precise contour of a workpiece. The method comprises the following steps: S1, mounting an image acquisition device on a movement mechanism capable of realizing precise movement; S2, performing multi-point accurate movement through an image acquisition device, acquiring the workpiece, and obtaining multi-point image information of the workpiece; S3, performing image splicing on the image information in the step S2 to obtain complete workpiece image information; and S4, carrying out contour extraction on the workpiece image information in the step S3 to obtain accurate contour information of the workpiece. When an ultra-large workpiece is detected, the method is easy to operate, the workpiece does not need to be moved, accurate contour information of the workpiece can be obtained, and the method has the advantages of being time-saving, labor-saving, money-saving and high in precision.

The invention provides a method and a device for calibration of photoelectric bridge deflection meters. The device comprises a measurement mainframe, a moving module and an automatic leveling module. The measurement mainframe is used for calculating calibration data of a to-be-calibrated deflection meter on the basis of set reference data and measurement data of the to-be-calibrated deflection meter. The moving module is connected with the measurement mainframe and vertically moving relative to the horizontal plane to enable deflection measurement of the to-be-calibrated deflection meter on the basis of control signals obtained from the reference data processed by the measurement mainframe. The moving module is arranged on the automatic leveling module which is connected with the measurement mainframe, and the automatic leveling module is controlled by the measurement mainframe to realize automatic leveling. By the method and the device for calibration of the photoelectric bridge deflection meters, calibration of static deflection and dynamic deflection of the photoelectric bridge deflection meters can be realized.

The embodiment of the invention provides an analog method and device for reproducing polygonization of a train wheel. The device comprises a hydraulic actuator cylinder (1), a force sensor (2), a bearing frame (3), an upper bearing seat (4), a photoelectric sensor (5), a traction motor (6), a coupling (7), an analog wheel axle (8), an analog wheel axle torque sensor (9), an analog wheel (10), an analog wheel axle rotation speed sensor (11), and an analog rail wheel (13). By applying high-frequency rotation speed fluctuation whose phase is controlled by the space rotation angle of the analog wheel on a rotation shaft of an analog wheel set, polygonization caused by cycle skidding of the wheel set is reproduced.

The invention discloses quick testing equipment which comprises a CCD and a worktable. A vertical column is arranged above the worktable. Furthermore the vertical column is provided with a mounting trough. The CCD and an annular LED light source are fixed on the vertical column through the mounting trough. Furthermore the CCD is mounted above the annular LED light source. The CCD is connected with a circuit controller and a host computer through transmission leads. A working state indicating lamp is arranged at the front surface of the circuit controller. The left side of the host computer is provided with a display device. A driving control device is mounted below the circuit controller. The driving controller is connected with a motor through a transmission lead. The CCD is connected with the host computer through an image collecting unit. The host computer is connected with the driving control device through the circuit controller. Furthermore the output end of the host computer is electrically connected with the input end of the display device. Feedback contrast control technology is utilized in the quick testing equipment, so that higher accuracy of the testing result is realized and a problem of easy errors in testing is settled.

The invention provides a method and a device for preventing the root defects of the friction stir welding of the longitudinal seam of the carrier rocket storage tank. It is provided with a flat ruler clamping mechanism on the flat ground on one side of the backing plate, and the flat ruler is erected on the flat ruler clamping mechanism. The plates are parallel; the clamping mechanism of the measuring tool is fixedly connected with the clamping mechanism of the stirring head, and the dial gauge is fixedly installed on the clamping mechanism of the measuring tool, and the dial gauge is vertically set close to the flat ruler; the vertical distance between the stirring needle and the backing plate The change value is equal to the vertical drop/rise distance value of the stirring head clamping mechanism read from the dial gauge along the ruler. The method and device of the invention realize the real-time measurement of the distance change between the stirring needle and the backing plate, thereby preventing the occurrence of incomplete penetration defects and the defects of the stirring needle piercing the backing plate, and effectively improving the success rate of friction stir welding.

The invention discloses a construction method for an aviation braking system model library, which comprises the following steps of: firstly, establishing aviation braking system parameters and naming rules of models; establishing a mathematical model of a pedal brake function, a mathematical model of an automatic brake function, a mathematical model of an anti-skid function, a mathematical model of a brake control valve, a mathematical model of an airplane wheel brake device, a mathematical model of a speed sensor and a test case model of different working conditions and typical faults of the system, and finally analyzing the models; establishing a model library, a general model library and description files of the model blocks, and completing the construction of the aviation braking system model library. According to the method, the professional knowledge model library of the aviation braking system is established, reuse in different types of projects is realized, the time for establishing the model is reduced, and joint office in different fields is realized through the design of the model expression system.

The invention discloses a vehicle data acquisition method, an intelligent terminal and a storage medium, and is applied to the technical field of Internet of Vehicles. The vehicle data acquisition method comprises the following steps: generating a diagnosis file corresponding to a vehicle system according to a set diagnosis parameter and a set data uploading period; the diagnosis file is sent to a vehicle system, after the vehicle system receives the diagnosis file sent by the intelligent terminal, target data are screened according to set diagnosis parameters in the diagnosis file, and the target data are uploaded to the intelligent terminal according to the set data uploading period in the diagnosis file; and receiving the target data fed back by the vehicle system, and diagnosing the fault information of the vehicle system according to the target data, thereby solving the problem that the vehicle fault cannot be positioned and reproduced, and realizing the positioning of the vehicle fault.

The invention discloses a portable aluminum-copper fixed point blackbody furnace, which comprises a portable fixed point furnace and an aluminum-copper fixed point crucible, realizes melting and solidification of an aluminum-copper eutectic fixed point (548.2 DEG C), adopts a PLC three-section temperature control mode in combination with the high heat conduction characteristic of a red copper aluminizing soaking block, and can improve the uniformity of a temperature field, prolong the duration time of a temperature plateau, and improve the reproduction level. Although the determined aluminum-copper fixed point is not adopted in an ITS-90 temperature scale, the temperature value of the aluminum-copper fixed point falls between defined fixed points of a zinc fixde point and an aluminum fixedpoint and is at a good reproduction level less than 30 mK, and can serve as an auxiliary fixed point of a radiation temperature standard device in the temperature range from 420 DEG C to 660 DEG C, so that the temperature range of the calibration fixed point of an infrared radiation thermometer is extended, and the temperature measurement accuracy of the radiation thermometer is improved.