41results about How to "Flexible exchange" patented technology

The invention provides an error accumulation free clock synchronization system applied to the wireless sensor network. The system comprises a clock synchronization algorithm and intelligent agent equipment. The intelligent agent equipment serves as a carrier of the clock synchronization algorithm, and the clock synchronization algorithm is run in the intelligent agent equipment. The clock synchronization algorithm includes a relative gradient estimation algorithm, a gradient compensation algorithm, a phase compensation algorithm, a time delay compensation algorithm and a virtual clock generation algorithm; and the intelligent agent equipment includes a data transmitting-receiving module, a transmitting-receiving time stamp marking module, a core control module, an algorithm calculation module and a synchronous time service module. According to the system, influence of transmission time delay on the clock synchronization precision can be inhibited effectively, clock synchronization canbe realized among different intelligent agent equipment, the system has the advantages that the synchronization precision is high, errors are not accumulated, the computational complexity is low and the program coupling factor among the equipment is low, time service is provided by outputting the synchronous second pulse and synchronous virtual time at the same time, and the system is also higherin practicality and wider in application range.

The invention discloses an integrated experimental device for controlling a dynamic process of a flow industry, and relates to an experimental control device. The device consists of more than two resistance-capacitance water tanks, and a pipeline-free and valve-free integration mode is used for forming the experimental device for simulating dynamic characteristics of an object. A plurality of control system modes are configured for test. A controlled object of the experimental device is formed by integrating basic units which are resistance-capacitance links without pipelines or valves. The fluidic resistance of a throttling hole is regulated in a threaded seat cover way, and is changed from 0 to infinite to simulate a plurality of linear or nonlinear dynamic characteristics. The water tanks are provided with measurement transmitters respectively, a field indication rotor flow meter, a throttling hole plate, a control valve and a circulation water pump are arranged in four paths of water inlet pipelines respectively, and a pressure meter is arranged at an outlet of the water pump. The device can be used for a process control simulation experiment in flow processes of large chemical production devices, equipment and machines, fluid production devices, equipment and machines and the like, and is applied to the automatic teaching and scientific researches of colleges, scientific research institutions, training institutions, factories and the like as well as teaching.

The invention provides an Ethernet bus-based four-channel optical fiber standard frequency module capable of realizing alternative soft and hard switching. The four-channel optical fiber standard frequency module comprises a power supply module, a power divider, four photoelectric conversion circuits, one PPC chip, one FPGA chip, four SRAM chips, two FLASH chips, two Ethernet interface chips, one RS232 interface chip, a radio frequency switch chip and two LVDS exchange chips, wherein the power supply module supplies power for the power divider, the photoelectric conversion circuits, the PPC chip, the FPGA chip, the SRAM chips, the FLASH chips, the Ethernet interface chips, the RS232 interface chip, the radio frequency switch chip and the LVDS exchange chips; and the FPGA chip, the SRAM chips, the FLASH chips, the Ethernet interface chips, the RS232 interface chip, the radio frequency switch chip and the LVDS exchange chips are connected with the PPC chip respectively. The four-channel optical fiber standard frequency module of the invention can realize the soft and hard switching of LVDS through using the FPGA chip or the PPC chip; and an Ethernet bus is adopted between the four-channel optical fiber standard frequency module and a main control module. The four-channel optical fiber standard frequency module is advantageous in high transmission speed, high reliability in communication and the like.

The invention relates to a VR-environment-based process control experiment teaching method and system. The method comprises the following steps: in a preset area, executing a virtual experiment operation through a control handle; to obtain experiment information in the experiment operation by a signal connecting device, and sending the experiment information to an algorithm integration simulationdevice; according to the experiment information, simulating and calculating an experiment result, judging whether the experiment result is within a preset value, if so, displaying the experiment result; if not, feeding back a corresponding control signal to a controller, and controlling a user to adjust the corresponding experiment operation. The system comprises a VR input control device, the signal connecting device, the algorithm integration simulation device and a display device. Through the method and system, under the VR environment, the equipment construction and a pipeline hand valve and so on can be flexibly arranged, the operation is convenient, the experiment time is saved, the place, various raw materials and facilities are saved, and the experiment cost is greatly reduced.

The invention relates to the technical field of optical fiber communication, discloses an optical fiber connector and an optical fiber connection structure, and provides a design scheme of a novel optical fiber connector capable of being unlocked based on a rotating structure. A lock toggle clip installed outside a connecting shell is designed to be a forepoling arm which can achieve locking and buckling with an adapter side locking structure through the elastic deformation recovery effect and can achieve friction-free unlocking between a latch and the adapter side locking structure through the seesaw principle. On one hand, it can be ensured that the latch on the connector end and the locking structure on the adapter end are locked tightly, and on the other hand, the latch and the locking structure are gradually separated in a back-to-back mode in the unlocking process, so that friction force can be gradually reduced, mechanical abrasion to a locking component in the unlocking process can be avoided, the service life of the connector is prolonged, and the coupling precision of the connector and the adapter and the optical fiber communication transmission effect during subsequent connection and use are guaranteed.

The invention relates to arched shed ventilation apparatus for agricultural planting. The arched shed ventilation apparatus for agricultural planting comprises an arched shed main body, wherein the arched shed main body comprises a plurality of arc-shaped support beams arranged side by side, a plastic cloth covers the plurality of arc-shaped support beams, the plastic cloth at the head-end of thearched shed main body can be partially opened to form a head-end vent, the plastic cloth at the tail-end of the arched shed main body can be partially opened to form the tail-end vent, and the plasticcloth on two sides of the arched shed main body can be opened at intervals to form side vents. The simultaneous opening and closing, driven by a geared motor, of the head-end vent, the tail-end vent,and the multiple side vents on two sides is realized through the reasonable structure configuration connection of the geared motor, a first gear commutator, a second gear commutator and a square tube, at the same time the cooperation of side winding rollers, a head-end winding roller and a tail-end winding roller, and the combination of a special winding and fixing manner of first side ventilation draw ropes, second side ventilation draw ropes, a head-end ventilation draw rope and a tail-end ventilation draw rope. On the one hand, the equipment purchase cost is saved, and on the other hand, the labor and time are saved.

The invention provides a 8kbps sub-time slot interchange method and a device thereof, which is flexible to interchange, changes the minimum exchange rate of a chip through parameter configuration, and has more advantage compared with the traditional switch chip. The device comprises a programmable logic device unit, a microprocessor unit, an E1 interface unit and a power supply unit, wherein the programmable logic device unit is respectively connected with the microprocessor unit and the E1 interface unit. The 8kbps sub-time slot interchange method adopts a mode that the alphabetic writing controls reading to realize n*8kbps variable rate time slot interchange, and utilizes the microprocessor to perform IP group packet to data so as to realize packet interchange of data. The invention changes the minimum exchange rate of the chip through parameter configuration, has more advantage compared with the traditional switch chip, can realize the IP group processing function of the interchange of voice and data between systems, gives full play to the advantage of time slot interchange and IP group interchange in the interchange of voice and data, and saves the cost.

The invention discloses a graphene artificial cochlea electrode and a preparing method thereof. The electrode comprises a tip part, a bent part, contact electrodes, an electrode carrier and electrodewires, wherein the tip part is arranged at the foremost portion of the artificial cochlea electrode, the electrode carrier wraps the electrode wires and half wraps the contact electrodes connected with the electrode wires one to one, the bent part is an annular groove formed in the electrode carrier, each contact electrode comprises an inner side contact and an outer side contact, the inner side contact faces a worm shaft and the outer side contact backs to the worm shaft when the contact electrode is used and bent, and the electrode wires are wavy. The surface bioactivity of the contact electrodes is enhanced, the adhesion, proliferation and differentiation of cells are facilitated, meanwhile the formation and integration of peripheral nerves with the graphene artificial cochlea electrodeas the implant material are promoted, and the aim of improving the surface bioactivity and biocompatibility of the artificial cochlea contact electrodes is realized.

The invention provides an electronic business card exchange method and apparatus, and a mobile terminal. The method comprises the following steps: when an opening instruction of a business card exchange switch is detected, receiving multiple pieces of second positioning information of a plurality of second mobile terminals sent by a server, wherein the plurality of second mobile terminals have opened the business card exchange switches; determining target positioning information in the multiple pieces of second positioning information according to the first positioning information of a first mobile terminal and the direction information of the first mobile terminal; sending the target positioning information to the server; and receiving target business card information of a target mobile terminal corresponding to the target positioning information sent by the server. By adoption of the electronic business card exchange method and apparatus, the business card exchange is more flexible,and the business card exchange efficiency is improved.

The present invention is directed to a device and to a method, both arranged to generate partial results by executing information processing on a data stream, wherein the device is configured to process information comprised in the data stream by implementing a stream window hierarchy, comprising a plurality of levels, and by generating partial results at each level of the stream window hierarchy.

the invention discloses floating-ball switch and an installation and control method thereof. The switch comprises a reed pipe, A floating ball is sleeved on the reed pipe, A magnet is arranged in thatfloating ball, the floating ball can float up and down the reed pipe, a guide pipe is arranged at the outlet end of the reed pipe, and the outlet end of the reed pipe is sealingly connected with thelower end of the catheter, the lead out of the reed tube passes through a guide pipe and out of the upper end of the guide pipe, The guide pipe is mounted on an installing seat, and the guide pipe isadjustable up and down with respect to the installing seat, the installation and control method thereof comprises the following steps: At first, installing a float ball switch on the mount, then adjusting the float switch position, Finally, performing the liquid level control. The invention has the advantages of isolating the lead of the float switch from the external environment, ensuring that the corrosive medium does not corrode the lead of the float switch and other parts, and the guide pipe is adjustable up and down with respect to the installing seat, thereby facilitating the flexible adjustment of the liquid level of the medium, simple structure, convenient installation and low manufacturing cost.

The invention provides a maintenance management system of a wireless communication system. A webmaster server of a local OAM (Operation Administration and Maintenance) is directly connected with far-end OAM or connected with the far-end OAM by virtue of an IP WAN (Internet Protocol Wide Area Network); the webmaster server is connected with a WSU server and a client by virtue of an LAN (Local Area Network); the WSU server is connected to a BS (Base Station) by virtue of a BS controller; an OAM system is of a browser/network server/database three-layer structure. The maintenance management system of the wireless communication system is flexible in exchange mode, supports a minitype pure wireless exchange, provides a wireless expansion mode and supports various relay interfaces; the OAM operates based on an operating system Windows NT/2000 server environment; operation is performed through an IE (Internet Explorer) browser interface; the maintenance management system is easy to learn and use, and great convenience is provided for users to perform equipment management on a WPS8900 system.