Sector dual-resonant dipole antenna

The present invention discloses a sector dual-resonant dipole antenna. Radiation elements of the antenna are two identical sector patches. Two identical rectangular notches can be symmetrically arranged or two identical tuning stubs can be symmetrically loaded on the sector patches at positions deviating from the central axis of the two sector patches. Exciting points are symmetrically arranged on sides of the sector patches close to a central axis. The present invention realizes a wide beamwidth radiation characteristic through a two-dimensional sectorial resonator, and then the notches are arranged or the tuning stubs are loaded at appropriate positions of two arms of the sectorial resonator, and thereby a dual-resonant characteristic can be realized within a working band.

Method, apparatus, and system for active-standby switchover

The present invention relates to the field of communication technologies and discloses a method, an apparatus, and a system for active-standby switchover. The method includes: copying at least one packet group to a standby board; recording the copied packet group and generating a transmission rule chain table of an active board according to a sequence of copying, so that the standby board generates a transmission rule chain table of the standby board which is the same as the active transmission rule chain according to the sequence of copying; and transmitting the packet group according to the sequence of the transmission rule chain table of the active board. By using the method, resuming transmission from a breakpoint upon an active-standby switchover is enabled.

METHOD, APPARATUS, AND SYSTEM FOR ACTIVE-STANDBY SWITCHOVER

The present invention relates to the field of communication technologies and discloses a method, an apparatus, and a system for active-standby switchover. The method includes: copying at least one packet group to a standby board; recording the copied packet group and generating a transmission rule chain table of an active board according to a sequence of copying, so that the standby board generates a transmission rule chain table of the standby board which is the same as the active transmission rule chain according to the sequence of copying; and transmitting the packet group according to the sequence of the transmission rule chain table of the active board. By using the method, resuming transmission from a breakpoint upon an active-standby switchover is enabled.

Method, apparatus, and system for active-standby switchover

The present invention relates to the field of communication technologies and discloses a method, an apparatus, and a system for active-standby switchover. The method includes: copying at least one packet group to a standby board; recording the copied packet group and generating a transmission rule chain table of an active board according to a sequence of copying, so that the standby board generates a transmission rule chain table of the standby board which is the same as the active transmission rule chain according to the sequence of copying; and transmitting the packet group according to the sequence of the transmission rule chain table of the active board. By using the method, resuming transmission from a breakpoint upon an active-standby switchover is enabled.

Triple-resonant null frequency scanning antenna

The present invention discloses a triple-resonant null frequency scanning antenna, which belongs to the technical fields of the Internet of Things and microwave. The triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole arranged on a medium substrate, and rectangular notches are symmetrically arranged on a sector patch of the circular sector magnetic dipole. The circular sector magnetic dipole is fixed on the medium substrate by a second shorting pin and third shorting pins, an flared angle of the circular sector magnetic dipole is a first central angle, and two third shorting pins are present and are symmetrically arranged on both sides of the angular bisector of the first central angle.

Triple-resonant null frequency scanning antenna

The present invention discloses a triple-resonant null frequency scanning antenna, which belongs to the technical fields of the Internet of Things and microwave. The triple-resonant null frequency scanning antenna comprises a circular sector magnetic dipole arranged on a medium substrate, and rectangular notches are symmetrically arranged on a sector patch of the circular sector magnetic dipole. The circular sector magnetic dipole is fixed on the medium substrate by a second shorting pin and third shorting pins, an flared angle of the circular sector magnetic dipole is a first central angle, and two third shorting pins are present and are symmetrically arranged on both sides of the angular bisector of the first central angle.

método, aparelho e sistema de comutação de prontidão ativa

processo, aparelho e sistema para comutação de apoio ativa. a presente invenção refere-se á área de tecnologias de comunicação e descreve um processo, um aparelho e um sistema para comutação de apoio ativa. o processo inclui: antes de transmitir um grupo de pacotes correspondente a um par, sob uma sessão de pares, copiar o pelo um grupo de pacotes correspondente para uma placa de apoio: gravar o grupo de pacotes copiado e gerar de acordo com a sequência de copiar uma tabela de cadeia de regras de transmissão da placa ativa, de modo que a placa de apoio gera de acordo com a sequência de copiar, uma tabela de cadeia de regras de transmissão da placa ativa, que é idêntica á tabela de cadeia de regras de transmissão ativa; e transmitir o grupo de pacotes de acordo com a sequência da tabela de cadeia de regras de transmissão da placa ativa, de modo que a placa de apoio monitora o progresso de transmissão da placa ativa de acordo com a tabela de cadeia de regras de transmissão da placa de apoio e retorna a transmissão a partir de um ponto de interrupção, depois de uma comutação de apoio ativa.

Method, device and system for main/standby switch

Sector dual-resonant dipole antenna

The present invention discloses a sector dual-resonant dipole antenna. Radiation elements of the antenna are two identical sector patches. Two identical rectangular notches can be symmetrically arranged or two identical tuning stubs can be symmetrically loaded on the sector patches at positions deviating from the central axis of the two sector patches. Exciting points are symmetrically arranged on sides of the sector patches close to a central axis. The present invention realizes a wide beamwidth radiation characteristic through a two-dimensional sectorial resonator, and then the notches are arranged or the tuning stubs are loaded at appropriate positions of two arms of the sectorial resonator, and thereby a dual-resonant characteristic can be realized within a working band.

Fault detection method for rotating machine based on sparse time synchronous averaging

A fault detection method for a rotating machine based on sparse time synchronous averaging is disclosed, and the method includes: collecting a vibration signal and a rotating frequency or rotating frequency pulse signal of the rotating machine and performing analog-to-digital conversion to obtain the vibration signal and rotating speed information by a sensor; according to the type and number of detection components in the rotating machine, constructing a component-aware comb vector g based on the vibration signal and rotating speed information, wherein the type includes the gear, rotor and bearing; constructing a quasi-time synchronous average vector w based on the component-aware comb vector g; constructing a sparse time synchronous averaging model F by using the quasi-time synchronous average vector w; solving the sparse time synchronous averaging model F with an optimization solution algorithm to obtain a sparse spectrum and a reconstruction time signal.

Fault detection method for rotating machine based on sparse time synchronous averaging

A fault detection method for a rotating machine comprises collecting a vibration signal and a rotating frequency or rotating frequency pulse signal of the rotating machine and performing analogue-to-digital conversion to obtain the vibration signal and rotating speed information by a sensor. According to the type and number of detection components in the rotating machine, constructing a component-aware comb vector g based on the vibration signal and rotating speed information, wherein the type includes the gear, rotor and bearing; constructing a quasi-time synchronous average vector w based on the component-aware comb vector g; constructing a sparse time synchronous averaging model F by using the quasi-time synchronous average vector w; solving the sparse time synchronous averaging model F with an optimization solution algorithm to obtain a sparse spectrum and a reconstruction time signal; and constructing an index according to the sparse spectrum and time signal for fault diagnosis.

一种陶瓷太阳能连接胶套

本实用新型提供一种陶瓷太阳能连接胶套，涉及陶瓷太阳能技术领域。该一种陶瓷太阳能连接胶套，包括安装框架和连接机构，所述加固内圈的外表面一侧与膨胀横条的外表面一侧连接，膨胀横条的外表面右侧与膨胀竖条的外表面左侧连接，所述连接套的外表面左侧与橡胶垫的外表面右侧连接，所述橡胶垫的内表面与收紧圈的外表面连接，所述连接套的外表面中部与加固外圈的内表面连接。本实用新型通过连接套、加固外圈、加固内圈、膨胀横条、膨胀竖条、防水内层和橡胶垫等结构的相互配合使用，所以在使用的时候密封性和防漏水效果更好，而且还可以将连接部分套接的更牢固，防漏性更好，所以该装置可以达到方便使用且防止漏水的目的。

一种高层建筑太阳能热水一体化装置

本实用新型涉及太阳能技术领域，且公开了一种高层建筑太阳能热水一体化装置，包括安装板、限位轨槽、安装底座、滑动侧板和太阳能板，所述安装底座包括固定装置，所述固定装置包括固定柱、连接柱、内柱、移动板、导柱、固定板、折柱、滑板、限位柱和挡板，所述滑动侧板包括限位装置和拉环，所述限位装置包括弹性块、限位板、折板和插柱，所述弹性块底部与安装板内壁底部固定连接。该高层建筑太阳能热水一体化装置，通过设置的拉环，从而使滑动侧板向右移动，通过设置的弹性块，从而使限位板向上移动，进而使插柱向上移动，进而使滑动侧板向左移动，从而将太阳能板固定，进而方便了太阳能热水器一体化装置的安装。

一种多功能保温隔热板

本实用新型公开了一种多功能保温隔热板，涉及太阳能集热板技术领域。该多功能保温隔热板，包括储水罐、太阳能蓄热板和支架，所述支架的底部焊接有支撑腿，支架上固定安装有太阳能板安装框架，太阳能板安装框架呈倾斜设置，太阳能板安装框架上设置有若干组太阳能蓄热板，太阳能蓄热板的数量为十二组，太阳能蓄热板为内部空心结构，太阳能蓄热板之间均固定安装有耐高温套胶连接管，通过耐高温套胶连接管实现每两相邻的太阳能蓄热板之间内部连通，十二组太阳能蓄热板形成一个流水回路。本实用新型结构简单，能够防止太阳能蓄热板内残留积水而导致太阳能蓄热板损坏，从而提高了太阳能蓄热板的使用寿命。

Nonlinear sparsity-based instantaneous dynamic frequency fault diagnosis method for aviation intermediate bearing

The present disclosure discloses a nonlinear sparsity-based instantaneous dynamic frequency fault diagnosis method for an aviation intermediate bearing. In the method, a vibration signal and a rotating speed signal of high and low voltages of the intermediate bearing are acquired, and a vibration signal fragment x under a specific working condition is intercepted according to the rotating speed signal; a nonlinear sparse time-frequency enhancement model or a nonlinear sparse enhancement algorithm model is established based on derivative window function short-time Fourier transform of the vibration signal; the nonlinear sparse time-frequency enhancement model is solved or the nonlinear sparse enhancement algorithm model is improved by using a fast iterative shrinkage threshold algorithm and combining a k sparse strategy, and finally a nonlinear sparse time-frequency representation result {circumflex over (N)} x , may be obtained through iterative optimization.

Monolithic integrated multi-segment cascade optical frequency comb and chip thereof

A monolithic integrated multi-segment cascade optical frequency comb and its chip are disclosed, which belongs to the technical field of sensing detection, quantum information and optical communication technology. The optical frequency comb includes a first semiconductor passive mode-locking laser, a semiconductor optical amplifier, and a second semiconductor passive mode-locking laser sequentially integrated and connected; the first semiconductor passive mode-locking laser includes a first reverse bias absorption area integrated with an optogalvanic distribution grating and a first gain cavity length extender (coupled multi-ring or multi-disk); the second semiconductor passive mode-locking laser includes a second reverse bias absorption area and a second gain cavity length extender (coupled multi-ring or multi-disk); each structure is connected to each other by electrical isolation grooves. Through the above structure, the present disclosure realizes an optical frequency comb with small size, high efficiency, tunable, fundamental mode, high power, narrow pulse width, wide spectrum and flexible controllability.