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467results about How to "Reduce difficulty" patented technology

Overall control system for trams and control method thereof

ActiveCN104210515AReduce difficultyEasy to convert
The invention relates to an overall control system for trams and a control method thereof. The control system comprises an operation dispatching and commanding system, a positive line signal control system, a comprehensive vehicle-mounted information system and an intersection priority control system, wherein the operation dispatching and commanding system is used for controlling the operation of all lines, the positive line signal control system is used for carrying out interlock control on the trams at terminals and positive line branch stops, the comprehensive vehicle-mounted information system is used for sending real-time positioning and advancing route request signals, and the intersection priority control system is used for controlling the trams at intersections; the control method comprises the step of controlling a manually-confirmed control mode, a manual remotely-controlled control mode, a centralized automatic control mode and a tram-ground automatic control mode, of which the priority levels decrease sequentially. According to the control system and the control method, aiming at the complicated operating environment of the trams, all modules collaboratively complete adapted control modes through a communication system, the switchover of all the control modes is convenient, and the automatic and intelligent level is high, so that the increase/improvement of the efficiency/safety of the operation of the trams is facilitated.
Owner:上海亨钧科技股份有限公司

Remote control intelligent rubbish salvage ship

The invention discloses a remote control intelligent rubbish salvage ship which comprises a ship body and further comprises a driving mechanism, a conveying mechanism swinging vertically and arranged obliquely, a rolling and harrowing mechanism with the height adjustable, rubbish stop sheets, a camera mechanism capable of freely swinging and rotating, a pushing mechanism used for pushing the conveying mechanism to vertically swing and a wireless remote control device. The ship body is provided with a rubbish containing box. The driving mechanism is installed at the rear side of the ship body. The conveying mechanism is installed on the ship body and located at the front side of the rubbish containing box. The rolling and harrowing mechanism is installed at the front side of the conveying mechanism. The rubbish stop sheets are installed at the two sides of the rolling and harrowing mechanism. The camera mechanism and the pushing mechanism are respectively installed on the ship body. The pushing mechanism is connected with the conveying mechanism. The driving mechanism, the conveying mechanism, the rolling and harrowing mechanism, the camera mechanism and the pushing mechanism are respectively connected with the wireless remote control device wirelessly. According to the remote control intelligent rubbish salvage ship, the rubbish disposal difficulty can be reduced, rubbish can be easily searched for and fished, and the skin of the human body can not be hurt.
Owner:WUZHOU UNIV

Method for implementing satellite side-sway automotive image live transmission

ActiveCN101226058AAvoid satellite attitude interferenceReduce difficulty
The invention relates to a realization method for the real-time transmission of satellite lateral motion image, which is characterized in that: a complete satellite adopts four control antennae for transceiver, so that the control antenna beam is in omnidirectional coverage after the satellite being moved laterally; the complete satellite is controlled to move laterally, continuously and rapidly in a large angle by a momentum wheel; the satellite attitude is measured by using a whirligig in the process of lateral motion; and the satellite crab angle can be calculated in real time, simultaneously, the drift angle can be controlled, so the satellite lateral motion is set to a swinging angle scope stably. In the phase of satellite bias flight, a star sensor and the whirligig are adopted for united attitude determination to the satellite; the camera integral time is calculated in real time by a GPS receiver according to the satellite orbit and latitude; the camera will generate exposure and imaging according to the integral time; the imaging data after the lateral motion can be transmitted to the ground by the satellite through an array data transmission antenna. The realization method for the real-time transmission of satellite lateral motion image has the advantages that: the large-angle lateral motion of the satellite can be realized; thereby the camera development difficulty because of camera wabble or swing mirror addition can be lowered; the visual range of the satellite can be expanded; and the revisit cycle of the satellite can be increased.
Owner:AEROSPACE DONGFANGHONG SATELLITE

Device and method for monitoring ESR (Equivalent Series Resistance) and C (Capacitance) of output capacitor in DCM boost converter

InactiveCN105915049AReduce difficulty
The invention discloses a device and a method for monitoring ESR (Equivalent Series Resistance) and C (Capacitance) of an output capacitor in a DCM boost converter. The device comprises a boost converter main power circuit, a driving circuit, a display unit and a signal processing module, wherein the signal processing module comprises a power circuit control unit, a switching frequency fs calculation unit, a duty ratio D calculation unit, an output voltage trigger sampling unit and a capacitance ESR and C calculation unit; and according to the method, a PWM (Pulse Width Modulation) driving pulse signal of a switching tube is detected, the duty ratio D calculation unit calculates the duty ratio, the switching frequency fs calculation unit calculates the switching frequency of the converter, the output voltage trigger sampling unit detects the mean of the output voltage, samples the instantaneous value of the output voltage by triggering and sends the data to the capacitance ESR and C calculation unit, and the values of the current ESR and C of the output filter capacitor in the boost converter are obtained. The device and the method do not need a current sensor, do not influence normal operation of the converter, and provide a basis for predicting the service lives of a capacitor and a power supply.
Owner:NANJING UNIV OF SCI & TECH

Method and apparatus for high-efficient crude oil desalination / dehydration

InactiveCN102226100AReduce difficultyReduce the water content of crude oil
The invention belongs to the technical field of petrochemical industry, and particularly relates to a method and an apparatus for high-efficient crude oil desalination / dehydration by a combined filtration-electric field coalescence method. The apparatus for high-efficient crude oil desalination / dehydration of the invention comprises a raw material conveying system, a mixing device, a dehydration filtration device, and an electrical desalting device which are connected in order. The method for high-efficient crude oil desalination / dehydration of the invention is realized by using the apparatus for high-efficient crude oil desalination / dehydration of the invention and through the steps of raw material preheating, mixing, preliminary demulsification, and electrical desalination / dehydration. The invention adopts a combined filtration-electric field coalescence method for crude oil desalination / dehydration, which can overcome respective disadvantages of performing desalination / dehydration process by a filtration method or an electric field coalescence method, decrease running severity of both the two methods, not only improves the adaptability of the crude oil desalination process, the desalination / dehydration rate, and the stable running rate, but also reaches the purposes of energy saving and consumption reduction.
Owner:GUANGZHOU BOXENERGY TECH

Mathematical formula identification method and device

The embodiment of the invention provides a mathematical formula identification method and device. The method comprises the following steps that: receiving input image data, wherein the contents of the image data comprise written mathematical formula information; determining one or a plurality of operation relationship types matched with the mathematical formula information and one or a plurality of characteristic regions corresponding to each operation relationship type; identifying one or the plurality of characteristic regions to obtain one or a plurality of formula elements; and combining with one or the plurality of operation relationship types to organize one or the plurality of formula elements into a mathematical formula corresponding to the mathematical formula information. Through the embodiment of the invention, the accurate identification of the written mathematical formula is realized, in addition, the structural properties of the mathematical formula are fully utilized in an identification process, character identification difficulty is lowered, the effect and the flow of the whole identification process are optimized, the identification accuracy and the identification speed of the written mathematical formula are improved, and accurate, simple and convenient mathematical formula input experience is provided for users.
Owner:BEIJING SINOVOICE TECH CO LTD

LLC resonant converter and control method

The invention discloses an LLC resonant converter and a control method, and the LLC resonant converter is lower in design difficulty, and comprises an inverter circuit, an LLC resonant cavity, a transformer and a rectification network which are sequentially connected from the input to the output. The LLC resonant cavity comprises a resonant inductor Lr, an excitation inductor Lm and a resonant capacitor Cr, and is additionally provided with a two-way switch; the resonant inductor Lr and the resonant capacitor Cr are connected in series between the first output end of the inverter circuit and the first end of the primary side coil of the transformer. The second output end of the inverter circuit is connected with the second end of the primary side coil of the transformer, the excitation inductor Lm is connected with the primary side coil of the transformer in parallel, the first end of the two-way switch is connected with the first end of the primary side coil of the transformer by being connected between the resonance inductor Lr and the resonance capacitor Cr, and the second end of the two-way switch is connected with the second end of the primary side coil of the transformer; theresonant inductor Lr is connected between the first end of the two-way switch and the first end of the primary side coil of the transformer, and the resonant capacitor Cr is connected between the first end of the two-way switch and the first output end of the inverter circuit.
Owner:MORNSUN GUANGZHOU SCI & TECH

Flexible alternating current/direct current electronic transformer checking device based on mixed sampling

The invention discloses a flexible alternating current/direct current electronic transformer checking device based on mixed sampling. The flexible alternating current/direct current electronic transformer checking device comprises a primary rising current circuit, a high-precision alternating current AD acquisition circuit, a high-precision direct current AD acquisition circuit, a standard transformer, an I/U converter, a main-control CPU module and a digital value acquisition module; an electronic transformer body to be checked is connected in series with the standard transformer and the primary rising current circuit sequentially through an optical fiber; the standard transformer is connected with the high-precision alternating current AD acquisition circuit; the primary rising current circuit is connected with the high-precision direct current AD acquisition circuit; the high-precision alternating current AD acquisition circuit and the high-precision direct current AD acquisition circuit are connected with the main-control CPU module; a merging unit is connected with the main-control CPU module through the digital value acquisition module; the main-control CPU module also sends synchronous signals to the high-precision alternating current AD acquisition circuit and the digital value acquisition module. Through the adoption of the device, alternating current and direct current checking of the transformer in a UPFC can be realized, the use is convenient, and the application prospect is excellent.
Owner:ELECTRIC POWER SCI RES INST OF JIANGSU ELECTRIC POWER +2
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