1450results about How to "Flexible switching" patented technology

A video distribution system which is enhanced in flexibility in distribution mode switching. In a camera server connected to a viewer via a network, a video capture board captures a video image. A CPU processes the captured video image according to an electronic PTZ mode for cutting out a part of the captured video image and a mechanical PTZ emulation mode for cutting out parts of the captured video image and interpolating the cut-out images. The CPU distributes the processed video image to the viewer via the network. The CPU performs mode switching between the electronic PTZ mode and the mechanical PTZ emulation mode based on control information transmitted from the viewer.

The invention discloses a distributed cache control method which comprises the following steps: according to the configuration information, a data access protocol and routing information are pre-loaded; according to the pre-loaded data access protocol, the data access request of a client is received; according to the pre-loaded routing information, at least a cache server in which the data requested by the data access request is located in is searched; according to status information of all searched cache servers, one cache server is selected as a target cache server; and the data access request is forwarded to the target cache server according to the pre-loaded data access protocol, to respond to the data access request. Correspondingly, the invention also discloses a distributed cache control device and a system. The invention can support various data access protocols, flexibly switch the used cache servers according to the status information of the cache servers, and realize the flexible control to distribution cache.

A switching-over circuit of engine redundant electric control system consists of master-backup system control circuit separately set on two circuit board with the same function. It is featured as forming said each control circuit by CPU processor, information exchange circuit, CPU interface circuit, master-backup control logic circuit and state processing logic circuit; carrying out real time monitor on master-backup state by utilizing digital signal between master-backup circuit board and generating master-backup control command according to monitored information. Its controlling method is also disclosed.

The invention discloses a simulation test system of train control system. A ground integrated simulation system can receive train operation-related information from a train-carried simulation system, and receive train information corresponding to the train ID from a CTC interface simulation system. The CTC interface simulation system carries out data communication with a wireless blocking center device, the ground integrated simulation system, and the train-carried simulation system. A TSRS interface simulation system carries out data communication with the train-carried simulation system andthe wireless blocking center device. The train-carried simulation system is used for simulating speed signals, braking signals, a handle position, and responder signals of a train-carried system, andrecording communication status of the train in real time. The train-carried control device is used for receiving ground information, generating speed mode curves and monitoring the running of the train, and the wireless blocking center device is used for managing and controlling the running of the train.

The invention discloses a PLC redundancy control method and system. The method comprises the steps that whether a main processor and/or a main bus has faults is judged, wherein the main processor corresponds to a standby processor, and the main bus corresponds to a standby bus; if the main processor has faults, the main processor is switched to the standby processor; if the main bus has faults, the main bus is switched to the standby bus; if the main processor and the main bus have faults, the main processor is switched to the standby processor, and the main bus is switched to the standby bus. The method and system solve the technical problem that in the prior art, a redundancy mode is low in reliability, and the technical effect of improving system reliability is achieved.

The invention discloses an automatic installation and upgrade method for application software of terminal equipment, wherein, the application software which is required by normal operations of the terminal equipment is stored into a memory by means of arranging the memory inside the terminal equipment; when the terminal equipment is connected with a host computer, application environment is prepared for the terminal equipment through calling and executing function programs in application software like installation programs or repair programs and so on by adoption of a bootstrap program; simultaneously, update of installation files of the application software is completed by the terminal equipment by means of the host computer downloading new version software which is provided by a device manufacturer. By adoption of the automatic installation and upgrade method of the invention, various defects of taking compact discs as carriers in the application software of the terminal equipment in the prior art are overcome; convenience sense for using the terminal equipment of a user is improved; extra cost of the equipment manufacturer is reduced.

The invention relates to a three-order switchable constant Lyapunov exponent spectra chaotic circuit and a using method thereof, wherein, the three-order switchable constant Lyapunov exponent spectrachaotic circuit comprises a single absolute value item chaotic circuit, an attractor adjusting circuit, a double absolute value item chaotic circuit, a phase inverter circuit, an amplitude adjusting circuit and a corresponding switch group; and the method comprises the steps of taking the basic constant Lyapunov exponent spectra chaotic circuit of a single absolute value item as the basis, and utilizing an absolute value arithmetic unit, a linear and nonlinear feedback branch, an adjustable power supply and a switch for constituting the switchable chaotic circuit. A phase track attraction region of the basic constant exponent spectra chaotic circuit is adjusted by switching through the switch and introducing a linear feedback item; the introduction of a nonlinear absolute value item can obtain the constant exponent spectra chaotic circuit with double absolute value items; and the amplitude adjustment of chaotic signals can be realized through the adjustable power supply, and the phasecontrol of the chaotic signals can be realized through the synchronous changes of feedback polarities of a constant item and the absolute value items. The three-order switchable constant Lyapunov exponent spectra chaotic circuit has the advantages of simple circuit, controllable amplitude and phase of the signals and abundant evolution of an attractor, thereby being widely used in chaotic radar, secure communication and fluid stirring.

The invention discloses a user-defined access control system and method based on a resource publisher. The system comprise an access control interface module, a role-resource mapping rule management module, a user-role mapping rule management module, an authority judgment module and a role authority management module, wherein the access control interface module is used for providing a configuration and query interface relevant to the access control; the role-resource mapping rule management module is used for a mapping rule between a management role and the resource; the access control interface module is used for receiving an association rule between a specific-format role and the resource and storing the association rule to an access control database; the user-role mapping rule management module is used for managing an association rule between a user and the role; the access control interface module is used for receiving an association rule between a specific-format user and the role and storing the association rule to the access control database; the authority judgment module is used for judging the access authority of the user by accessing a mapping rule stored in the access control database according to the authority judgment request of the user; and the role authority management module is used for creating a management role and appointing the access authority to the resource associated with the role.

This invention relates to a slide outer rotary multifunction door and window, which contains frame and a number of window wings, wherein frame having three axle rail on top and bottom frame, said window wings having end convex, edge, lock fastener, connector, three axle roller, fastener handle and active latch, it also can be installed with active castor on lower end of wing for being used as door. Said invention has advantages of easy open at any angle, safety, reliable and fine sealing performance.

The invention discloses a management device of a LINUX log, which is used in an embedded system comprising an application layer and a kernel. The management device comprises: an application layer log used for outputting user mode log information through an output function of the application layer log; a log transmission device for the application layer kernel used for transferring the user mode log information to the kernel; a kernel log used for outputting kernel mode log information through the output function of the kernel log; and a log output controlling device used for receiving the user mode log information that is output by the log transmission device for the application layer kernel and the kernel mode log information that is output by the kernel log respectively, and deploying, processing and outputting the log information. The invention also correspondingly discloses a management method of the LINUX log. In this way, the invention limberly deploys and switches various log output modes according to environments, and provides convenience to the research and development, the maintenance and the use of the embedded system.

The invention relates to a device for rapidly collecting and releasing boats, which comprises a collecting and releasing arm structure, an aligning device, a decoupler, a sling and a winch, wherein one end of the collecting and releasing arm structure is connected with a mother ship and the other end of the collecting and releasing arm structure can be extended or retracted in a suspending way to provide a force applying fulcrum for collecting and releasing the boats; the aligning device is connected at the other end of the collecting and releasing arm structure and is used to align with the lifting and the lowering positions of the boats on sea surface; the decoupler is limited on the aligning device and is used to be connected with the boats; one end of the sling penetrates through a pulley fixed on the collecting and releasing arm structure in a winding way, is connected with the decoupler and is used to transmit pulling force to the decoupler; and the winch is connected with the other end of the sling to provide pulling force for collecting and releasing the boats. The device is a collecting and releasing device with complete functions and can be used to stably and rapidly lower down the boats to sea surface from the mother ship under force-seven wind sea conditions or to collect the boats back to the mother ship from sea surface.

The present invention discloses a strapdown inertial combination measurement control device applicable to all-fibre digital clinometer, it is used for measuring well course of oil well and gas well, in particular it is applicable to conventional measurement with line and measurement while drilling. Said control device adopts strapdown inertial navigation principle, and utilizes main navigation system formed from optical-fibre gyroscope and anti-vibration accelerometer, under the condition of different working environments and measurement accuracy requirements respectively utilizes several external information of logging cable rope length, flux-gate sensor and zero speed and combines kalman filter so as to make system error estimation and correction of main inertial navigation system, and can limit error diffusion of inertial navigation system and form a high-accuracy combination inertial measurement instrument.

The invention provides a method and system for determining a main microphone and an auxiliary microphone from multiple microphones. The method includes the steps of determining the microphone, closest to a sound source, in the multiple microphones as the main microphone, and selecting one microphone, except for the main microphone, in the multiple microphones as the auxiliary microphone. The method and system solve the technical problem that as sound signals obtained by the microphones are low in signal to noise ratio, the sound quality is affected.

The invention relates to the technical field of robots, in particular to an object-loading robot which can move as well as climb stairs. The problems in the prior art that a stair-climbing and object-loading robot is complicated in structure and low in cost performance and it is hard to popularize the robot are solved. The object-loading robot comprises a supporting frame, caterpillar band drive mechanisms, a wheel caterpillar mode switch mechanism, an object-loading platform posture adjusting mechanism, driving hub motors, universal wheels and a control unit, the caterpillar band drive mechanisms, the wheel caterpillar mode switch mechanism, the object-loading platform posture adjusting mechanism, the driving hub motors, the universal wheels and the control unit are arranged on the supporting frame, through the wheel caterpillar mode switch mechanism, wheel caterpillar switching can be conducted aiming at the flat movement state or the stair climbing state, and thus the multiple movement modes of the robot are achieved. The object-loading robot is low in cost, small in size, and light in weight; the robot is flexibly switched between the flat movement mode and the stair climbing mode, and is more suitable for serving as a portable auxiliary object-loading robot, the control method is simple, and thus the object-loading robot is convenient to popularize.

The invention provides a hybrid communication method and system based on IEEE 802.15.4 and low power consumption Bluetooth dual protocol stacks. In the presence of low power consumption communicationrequirements, the IEEE 802.15.4 is used for performing communication and is switched to low power consumption Bluetooth for communication in the presence of large data volume communication requirements, a sensing device is in a 802.15.4 transmission mode by default, the IEEE 802.15.4 is periodically switched to the low power consumption Bluetooth to monitor whether Bluetooth data transmission exists. When the Bluetooth data transmission is found, the sensing device remains in a BLE transmission mode, establishes a connection with a Bluetooth device and transmits data, and immediately switchesback to the 802.15.4 transmission mode after the transmission is completed. The invention proposes a new dual protocol stack hybrid communication method, which integrates the IEEE802.15.4 and low power consumption Bluetooth dual protocol stacks on limited central processing unit and storage resources, can realize stable switching, and has the advantages of low power consumption communication and high-rate communication, the transmission rate is increased to 1 Mbps at most, the reliable transmission of large data volume in IEEE 802.15.4 devices, and the communication bandwidth, the stability and the power consumption characteristics are greatly improved.

The invention embodiment discloses a message aggregation display method and relevant device. The information aggregation display method comprises the steps that unread messages of talkers is received; if the unread messages from N talkers are received, and N is larger than the set threshold, the message digests of the unread messages of partial or all talkers in the N talkers is displayed on an user interface in a gridding mode, wherein N is a positive integer. The message aggregation display method and relevant device have the advantages that the flexibility of message aggregation display is improved, and convenience for users to switch between a plurality of talkers is improved.

The invention provides a shop service management system, comprising: a shop management system for managing each shop data, a client located in each shop and a database located in each shop, wherein the client is used for logging in the shop management system directly via a web mode when the network can reach to carry out the day-to-day business operation, or for downloading the service data to be used to the local database in the shop from the shop management system by using the client program downloaded from the shop management system in advance when the network can not reach and carrying out day-to-day business operation in the off-line mode based on the local database and uploading the service data to the shop management system. The system can support various modes such as centralized application, dispersed application and nixed application, the user can choose the appropriate mode to carrying out the day-to-day business operation in combination with the concrete shop condition, and the maintenance mode of the C/S structure is simplified.

The invention provides a super-resolution imaging system and method with stable images. The method comprises the following steps: firstly, placing an imaging optical element group, an oscillating mirror, a spectroscope, an imaging lens group and an imaging camera sequentially in the imaging optical path direction of a propagation path of an observed aiming beam; connecting an input end of a super-resolution image synthesis unit, which is used for synthesizing a plurality of undersampled images transmitted by a receiving and imaging camera into super-resolution images, with an output end of the imaging camera; placing the imaging optical element group, the oscillating mirror, the spectroscope, a detecting lens group and a detecting camera sequentially in a detecting optical path direction of the propagation path of the observed aiming beam; connecting an output end of the detecting camera with an input end of a computing control unit; connecting an input end of an oscillating mirror driver with an output end of the computing control unit; connecting an output end of the oscillating mirror driver, which is used for amplifying the voltage analog quantity sent by the computing control unit into the driving voltage analog quantity of the oscillating mirror and outputting the driving voltage analog quantity to the oscillating mirror, with a driving end of the oscillating mirror.

The invention discloses a pneumatic soft pole-climbing robot. The pneumatic soft pole-climbing robot comprises a soft robot body, an electromagnetic clamping device, a driving control system and remote control equipment. The soft robot body is in an annular shape with an opening; and the section of the soft robot body is circular. A central accommodating cavity and a plurality of sealed air cavities are formed in the soft robot body. Three material layers with gradually increased rigidity are arranged on the soft robot body; and the three material layers are a deformation layer, a middle layer and a restriction layer. The electromagnetic clamping device comprises an electromagnet A and an electromagnet B which are arranged on two open end surfaces. The driving control system is arranged in the central accommodating cavity; and the driving control system comprises an inflation control valve, an air pump, a micro controller and a portable power supply. The portable power supply is used for supplying power to the electromagnet A and the electromagnet B; and the remote control equipment is in wireless connection with the micro controller. As the pneumatic soft pole-climbing robot is built by using a soft material, the pneumatic soft pole-climbing robot has very high adaptive capacity of the robot to environment, can be applied to climbing within or outside pole-shaped tubes, and can climb pipes which are bent to a certain extent.

A threshold-free civil defense door of a doorway comprises door leaves, a doorframe, a lock and a hinge. A sealing beam and a sealing beam lifting mechanism are arranged under each door leaf, and each sealing beam is a turning type sealing beam and comprises a hinge base fixedly connected onto the back surface of the corresponding door leaf, a rocker hinged to the hinge base, a turning beam fixedly connected onto the rocker, a ground sealing member fixed on the turning beam and matched with the ground and a door leaf sealing member fixed on the turning beam and matched with the corresponding door leaf. Each sealing beam lifting mechanism comprises a reversed-L-shaped vertical connection rod, a crank, a shaft base, a bearing, a sealing beam lifting mechanism transmission shaft, a reversing speed changer and a sealing beam lifting handle. The threshold-free civil defense door of the doorway facilitates passing in ordinary time due to the fact that no above-ground threshold is arranged, can be closed in place fast in war so as to achieve functions of protection and closeness, is suitable for protection and closeness of the doorway of civil defense staff and vehicles and has the advantages of being reasonable in structure, convenient to use, easy to operate, flexible to open and close, economic and practical and convenient to maintain.

A handheld device and a planar antenna thereof are provided. The planar antenna comprises a radiator with an open terminal, a short terminal, a first feeding terminal and a second feeding terminal. The short terminal is coupled to a ground terminal. The first feeding terminal is formed between the open terminal and the short terminal, and coupled to a radio frequency (RF) signal terminal. The second feeding terminal is formed between the open terminal and the first feeding terminal, and coupled to the first feeding terminal by a transmission line and a switch element. The radiator resonates at the first central frequency when the switch element is turned off, and resonates at the second central frequency when the switch element is turned on.