825results about How to "Assurance control" patented technology

The invention discloses an intelligent combination forecasting method for short-term traffic flow, which at least comprises the following modules: 1) a historic average module, which divides different dates of one year into three different types, namely a holiday type, a weekend type as well as a Monday and Friday type, and calculates different traffic flows for each type respectively based on statistical data of historic traffic flow; 2) a neural network module, which is a parallel distributed information processing network, has the functions of non-linear mapping and associative memory, and forecasts the traffic flows through the internal relation modeling of the data; and 3) a fuzzy combination module, which aims at different traffic conditions to perform fuzzy combination transformation on the output of the historic average module and the neural network module to forecast the short-term traffic flow. The forecasting precision of the method is higher than the precision that single forecasting methods are independently used respectively, and is an effective method for forecasting the short-term traffic flow.

The utility model relates to a synthesis of a titania-alumina mixed oxide material and a catalyst carrier of a supported deep hydrodesulfurization catalyst by taking the compound as the carrier. 1)take the tetrabutyl titanate and the aluminum chloride or the pseudo-boehmite as the raw material, prepare the mesoporous mixed oxide material of TiO2-Al2O3 with the sol-gel method, and use the material as the carrier of the diesel oil deep hydrodesulfurization catalyst; 2)use the dipping method by modifying the active metal variety and the dipping method to get highly dispersed supported mesoporous hydrodesulfurization catalyst of TiO2-Al2O3 compound material after baking; in the diesel oil hydrogenation deep desulfurization reaction, the desulfurization capability is good, and the desulfurization rate can reach 99 percent; if the reaction can be operated under a relative relaxative condition, the sulfur in the diesel oil can be desorbed from 1300ppm to below 15 ppm, or from the 430ppm to below 1ppm; the sulfur content in the product can meet the standard of Europe IV.

The invention discloses an information transmission method of a spacecraft. The information transmission method comprises the following steps that: when a numerical control computer works normally, the numerical control computer receives telemeasuring data acquired by a remote unit and telemeasuring data provided by the control computer per se, the numerical control computer also receives telemeasuring data of a loading task processing unit, carries out telemeasuring formatting on all the received telemeasuring data to generate whole spacecraft telemeasuring data and outputs the whole spacecraft telemeasuring data to the remote unit A, and the remote unit A finishes information source encryption of the whole spacecraft telemeasuring data and outputs the encrypted information sources to a measurement and control responder; and when the numerical control computer works abnormally, the remote unit A directly outputs the acquired telemeasuring data and the telemeasuring data generated by the remote unit A per se to the measurement and control responder for downloading all the telemeasuring data. The information transmission method disclosed by the invention realizes backup of a key telemeasuring information transmission path of the spacecraft, thereby ensuring continuous monitoring of the ground on working states of key equipment of the spacecraft and improving the information transmission reliability.

The invention discloses a channel balance and sound field control method and device of a digitalized speaker system on the basis of a single generalized encoder. The method comprises the following steps of: (1), digital format conversion; (2) multi-channel balance processing; (3) sound field control processing; (4) serial-parallel conversion processing; (5) generalized encoding processing; (6) extraction selecting processing; (7) serial-parallel conversion processing; and (8) power amplification of digital signals of all channels, and driving of sound production of a digitalized speaker load. The device comprises a sound source, a digital format converter, a channel balancer, a sound field controller, a serial-parallel converter, a generalized encoder, an extraction selector, a serial-parallel converter, a multi-channel digital power amplifier and the digitalized speaker load; and all the units are connected in sequence. According to the method and device disclosed by the invention, volume, power consumption, cost and hardware implementation resources of the system are reduced, the electroacoustic conversion efficiency and the anti-jamming capability of the system are enhanced, and the inband frequency response plainness degree and the sound field control capability of the system are increased.

The invention discloses an air radio monitoring system based on ground remote control of a multi-rotor robot. The air radio monitoring system comprises the multi-rotor robot, a flight control unit, a directional antenna, an electronic compass, a radio monitoring reception unit, a central processing unit, a ground remote control unit and a ground control unit. The directional antenna, the electronic compass, the radio monitoring reception unit, the flight control unit and the central processing unit are all mounted on the multi-rotor robot. The central processing unit is connected with the radio monitoring reception unit and the electronic compass. The directional antenna is connected with the radio monitoring reception unit. The flight control unit is connected with the ground remote control unit. The ground remote control unit is connected with the central processing unit. The air radio monitoring system provided by the invention is low in manufacturing cost, low in flight cost, simple in structure, convenient to operate and high in safety, can control various flight attitudes of the multi-rotor robot through ground control, and can complete the radio monitoring task in the air.

The use efficiency of the screen at the time of displaying a subtitle together with a stereoscopic video is improved. A video shift mode is set for each of the subtitles, and when the stereoscopic video is reproduced, a video plane is shifted upwardly or downwardly and cropped in accordance with the video shift modes of the subtitles, and black frames on the top and bottom are collected in the top or the bottom, thereby ensuring the display areas of the subtitles.

The present invention discloses a fire experiment device based on a city underground comprehensive pipe rack. The pipe rack comprises a left side pipe rack and a right side pipe rack; a water supply pipeline is arranged on the ground of the left side pipe rack through a pipeline support; a high electric cable and a weak electric cable are respectively arranged at two sides of the left side pipe rack through an insulation support; a camera and an illumination lamp are installed at the top of the left side pipe rack; a drainage ditch is arranged at the bottom of the left side pipe rack; a gas pipeline is arranged on the ground of the right side pipe rack through the pipeline support; a camera and an illumination lamp are installed at the top of the right side pipe rack; and a drainage ditch is arranged at the bottom of the right side pipe rack. The fire experiment device comprises a transverse ventilation control system, a simulation fire source system, a fire detection system, a water mist fire extinguishing system and a water spray fire extinguishing system. The fire experiment device based on a city underground comprehensive pipe rack can simulate the city underground comprehensive pipe rack fire experiment so as to provide scientific reference for underground comprehensive pipe rack control and optimization, power-on electric wire propagating, fire detection and fire extinguishing.

The invention discloses a body control system and method based on Bluetooth communication. The body control system comprises a mobile phone, a background server and a vehicle; a vehicular APP is installed in the mobile phone for inputting an operation instruction and obtaining and displaying current state information of control components on the vehicle; the vehicle comprises a vehicular Bluetooth module, a body controller and the control components, the vehicle is paired with the mobile phone through the vehicular Bluetooth module, after the primary successful pairing, the mobile phone obtains the unique control right of the vehicle, the information of the mobile phone is stored in the vehicular Bluetooth module, the pairing information is sent to the background server for storage, and the pairing information is used as subsequent security verification evidence for controlling the connection of the mobile phone and the vehicle; after the mobile phone and the vehicle establish a Bluetooth connection, the body controller receives the operation instruction sent by the mobile phone and executes a corresponding operation on the corresponding control component according to the operation instruction. The body control system disclosed by the invention can bring secure and diversified experience to users.

The invention belongs to the technical field of a three-dimensional garage, and particularly relates to a three-dimensional bicycle garage for urban bicycles. A garage framework is in a cylindrical shape, the bottom of the garage is provided with a chassis, the top of the garage is provided with a top tray, the inner wall of the garage is provided with a plurality of bicycle parking frames, and the center of the garage is provided with a bicycle lifting fetching and storing device; the lifting fetching and storing device comprises a foundation support arranged at the center of the chassis, and the foundation support is provided with a rotating stand column; the rotating stand column is provided with a vertical guide rail, and the vertical guide rail is provided with a bicycle fetching and storing mechanism; the bicycle fetching and storing mechanism comprises a horizontal bicycle fetching and storing platform, the bicycle fetching and storing platform is provided with a horizontal guide rail, and the horizontal guide rail is provided with a bicycle clamping mechanism. By adopting the three-dimensional bicycle garage, the underground resource can be effectively utilized to build the urban bicycle three-dimensional garage, so that the shortage current situation of the urban land is alleviated, and the problem that no bicycle can be fetched or no vacant parking lot is provided can be avoided.

The invention discloses a gas supplementing and enthalpy increasing control method of a low-temperature type direct-current variable-frequency heat pump system. The key of the method is as follows, anexhaust temperature of the system is detected, when the exhaust temperature is larger than or equal to 70 DEG C, and when an exhaust superheat degree is larger than or equal to 25 DEG C, an enthalpyspraying electromagnetic valve (10) is electrified and started, and an enthalpy spraying auxiliary path is circulated; an enthalpy spraying electronic expansion valve (11) is started, an initial opening degree is 100 PLS and kept for 3 minutes, then adjusting is carried out according to an actual supercooling degree, when the actual supercooling degree is larger than or equal to a target supercooling degree, the opening valve control of the enthalpy spraying electronic expansion valve (11) is carried out; and when the actual supercooling degree is less than the target supercooling degree, theclosing valve control of the enthalpy spraying electronic expansion valve (11) is carried out, when the exhaust superheat degree is less than 20 DEG C, the enthalpy spraying electronic expansion valve(11) is closed, the enthalpy-spraying auxiliary path is not circulated, and the safety and reliability of a compressor are guaranteed. According to the gas supplementing and enthalpy increasing control method of the low-temperature direct-current variable-frequency heat pump system, the problems that in an actual application project, the heating performance of the variable-frequency heat pump system is attenuated and the system reliability is poor in a low-temperature use environment are solved.

The invention concerns a control circuit (20) of a switch (6) chopping a voltage supply of a primary winding of a power converter transformer, comprising means (45) for detecting the current in the switch in closed state after a predetermined time following each closure of said switch, and a comparator (40) of said current relative to a threshold (Ilim), the result of said comparator being taken into account for a predetermined time interval close to the beginning of a closing cycle of said chopping switch.

An output of an internal combustion engine is transmitted to an output shaft by controlling a control motor to change a speed without speed steps, in a power distribution planetary gear. An output of a drive motor is input to the output shaft by changing the speed into two-step decelerated rotation by means of an automatic transmission. The transmission produces a desired torque by decelerating the speed in a large degree when a vehicle speed is low, and produces a desired number of revolutions by decelerating the speed in a small degree when the vehicle speed is high.

The invention relates to a battery analysis method and system based on electrochemical parameters. According to the method, collected battery macroscopic parameters are mutually coupled with electrochemical-based microcosmic parameters obtained by further calculation through a curve fitting algorithm, so that the feature parameters input into a trained machine learning model contain more effectiveinformation; two-stage data cleaning is carried out through edge calculation and cloud calculation, so that the prediction precision of the machine learning model is fundamentally improved; through analysis of battery big data, fault early warning and out-of-control alarm can be realized according to outlier detection of real-time data; and a relatively accurate prediction model can be obtained through training of massive historical data, and accurate estimation of a battery state is realized.