37results about How to "Realize recurrence" patented technology

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 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 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.