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77889results about How to "Guaranteed accuracy" patented technology

Automatic sound field correcting device and computer program therefor

An automatic sound field correcting device executes a signal process to the plurality of audio signals on respective correspondent signal transmission paths, and outputs them to a plurality of correspondent speakers to correct sound characteristics on the respective signal transmission paths. Namely, a measurement signal is supplied to each signal transmission path, and a measurement sound corresponding to it is outputted from the speaker to a sound space. The outputted measurement sound is detected as a detecting signal. The frequency characteristic of the audio signal on each signal transmission path is corrected by an equalizer, and a gain value of the equalizer is determined by a correction amount determining unit. A frequency characteristics correction is performed predetermined times. At a first correction, the correction amount determining unit determines the correction amount by performing a frequency analysis, based on the detecting signal, i.e. base on the detecting signal corresponding to the measurement sound actually outputted to the sound space. On the contrary, at and after a second correction, the correction amount determining unit determines the correction amount based on the detecting signal or an output signal of the equalizer. Namely, at and after the second correction, the output signal of the equalizer is supplied to the correction amount determining unit in a signal processing circuit as the need arises, and the frequency characteristics correction is performed without actually outputting the measurement sound to the sound space.
Owner:ONKYO KK D B A ONKYO CORP

Garbage sorting platform and method based on two-dimensional code recognition technology

InactiveCN104044842AGuarantee classification effectGuaranteed recovery and treatment effectWaste collection and transferRefuse receptaclesThe InternetTerminal equipment
The invention discloses a garbage sorting platform based on a two-dimensional code recognition technology and a using method. The garbage sorting platform comprises a remote server, a system platform client side of the Internet of Things, and a terminal device. The system platform client side of the Internet of Things comprises a two-dimensional code intelligent sorting garbage can management module, a garbage bag handing-out management module, a user and community login management module, a garbage sorting integral module, a garbage sorting and recovering module and other device management modules. The terminal device comprises a two-dimensional code garbage bag handing-out machine, a two-dimensional code intelligent sorting garbage can, a garbage integral inquiry change machine and a garbage direct transporting device. By utilizing the mode that one household has one card, data corresponding of two-dimensional code IDs and the remote server is set up. By means of the garbage sorting platform and method, garbage can be sorted correctly and recovered effectively, the trouble caused by secondary sorting is reduced, the environmental sanitation department can count and process garbage sorting data conveniently, and the platform and the method have very important social significance.
Owner:杭州村口再生资源有限公司

Quick replacement station for battery box of electric vehicle and battery box replacement method

The invention discloses a fast power transformation station of a battery box of an electric automobile and a replacement method of the battery box. The power transformation station at least comprises the following devices: an automobile positioning platform, a battery box lifting and replacing platform, a stacking machine, a battery box storage rack, a logistics transmission port of the battery box and a delivery roller way which are symmetrically arranged relative to the longitudinal movement axis of the stacking machine, the simultaneous working of the two power transformation systems can be achieved, and the space utilization rate and the power transformation efficiency are improved. The fast power transformation station also comprises a power supply system which is arranged on a roof and consists of a solar photovoltaic power generation battery board; and self sufficiency of power can be achieved by virtue of the solar energy, the power supply of the equipment in the station or the charging for the battery box in the station are met. The invention also provides the replacement method of the battery box of the power transformation station. According to the power transformation station, the distribution is reasonable, the space utilization rate is high, the work of the equipment is reliable and simple, and the power transformation process is fast, so that the power transformation time can be shortened, the power transformation fault is reduced, and the compatibility for different vehicles and different battery boxes is also improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM

Concrete pump truck intelligent arm support control system and control method thereof

The invention provides a concrete pump truck intelligent arm support control system and a control method thereof. The control system comprises an arm support, a controller, an operating device and an actuator. The control system is characterized in that the control system also comprises an arm support detecting device which is used for detecting the spatial location of each segment of the arm support and transmitting detected spatial location signals of each segment of the arm support to the controller. The control method comprises: the construction of an arm support coordinate system; the detection of the current arm support position; the control of the actions of the arm support. In the concrete pump truck intelligent arm support control system, an operator is not required to manually regulate the position the gyratory angle of each segment of the arm support, the pouring accuracy and the operational reasonability are guaranteed, and the construction efficiency and the whole service life of the truck are improved greatly; within the stress impact allowable range and on the basis of the consideration of the concrete fluidity, coordinated actions of a plurality of segments of the arm support are realized; simultaneously, during the controlling process, extreme conditions and unreasonable operations of the movements of a plurality of the segments of the arm support are limited, the labor intensity and the experience requirement of the operator are alleviated greatly, and influences of unreasonable operations on the arm support structure and the service life of a hydraulic system are avoided.
Owner:BEIJING EASYSOLUTION ELECTRONICS

A combined deep learning training method based on a privacy protection technology

The invention belongs to the technical field of artificial intelligence, and relates to a combined deep learning training method based on a privacy protection technology. The efficient combined deep learning training method based on the privacy protection technology is achieved. In the invention, each participant first trains a local model on a private data set to obtain a local gradient, then performs Laplace noise disturbance on the local gradient, encrypts the local gradient and sends the encrypted local gradient to a cloud server; The cloud server performs aggregation operation on all thereceived local gradients and the ciphertext parameters of the last round, and broadcasts the generated ciphertext parameters; And finally, the participant decrypts the received ciphertext parameters and updates the local model so as to carry out subsequent training. According to the method, a homomorphic encryption scheme and a differential privacy technology are combined, a safe and efficient deep learning training method is provided, the accuracy of a training model is guaranteed, and meanwhile a server is prevented from inferring model parameters, training data privacy and internal attacksto obtain private information.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Desktop sharing method and system

The invention provides a desktop sharing method and a system. The system comprises a sharing terminal, a multimedia multi-point control unit, a viewing terminal and a control terminal, wherein, the sharing terminal is used for collecting desktop images and position and status information of a mouse, receiving operation events from the control terminal and replaying and displaying the events after processing; the multimedia multi-point control unit is used for forwarding the desktop images and the operation events; the viewing terminal is used for receiving the desktop images, and the position and status information of the mouse from the sharing terminal and replaying and displaying the information after decoding and decompression; and the control terminal is used for receiving the desktop images from the sharing terminal, replaying and displaying the information after decoding and decompression, simultaneously carrying out the operation on the desktop images transmitted by the sharing terminal and sending the operation event to the sharing terminal by MCU. The viewing terminal of the desktop sharing system can smoothly browse the remote desktop image and carry out the operation on the sharing terminal by the remote control terminal, truly reflects the operation events as the operation on the sharing terminal, and has excellent interaction effect.
Owner:GUANGDONG VTRON TECH CO LTD

Down filling machine

The invention discloses a down filling machine, which comprises a down storage box, weighing cabinets, down filling pipes and a programmable controller, wherein the down storage box is provided with at least two weighing cabinets; at least two weighing boxes are arranged in each weighing cabinet; the total number of the weighing boxes is equal to the total number of down outlets of the down storage box; each weighing cabinet is provided with at least one down filling pipe; the total number of the weighing boxes in each weighing cabinet is dual, and the number of the down filling pipes is a half of the total number of the weighing boxes. According to the down filling machine, the close full-automatic down filling can be carried out, the labor intensity is reduced, the production efficiency is improved, and the production cost is decreased. The down filling machine has the advantages of reasonable design, simple structure, low cost and good practicability. The down storage box of the down filling machine has stable down output, so that the down filling consistence and the down filling precision are ensured; a weighing process of the weighing boxes is independent, precise and effective; the down filling pipes cannot fill the down to airtight cutting pieces; working conditions of the multiple weighing boxes are alternatively changed and one down filling pipe is used for outputting, so that the down filling efficiency is further improved.
Owner:CHANGSHU BEALEAD AUTO MACHINERY

Positioning system of mobile robot and positioning method thereof

The invention discloses a positioning system of a mobile robot and a positioning method thereof. The positioning system comprises a base station. A dead reckoning positioning system comprises an angular rate sensor used for acquiring angle information of the mobile robot and a displacement sensor used for acquiring walking distance information of the mobile robot. An ultrasonic laser positioning system comprises an ultrasonic laser transmitting device arranged on the base station, an ultrasonic laser receiving device arranged on the mobile robot and an information processing system. The position coordinates of the mobile robot in the ultrasonic laser positioning system can be obtained through the information exchange between the ultrasonic laser transmitting device and the ultrasonic laser receiving device. A data fusion unit is used for the fusion of the angle information and the walking distance information in the dead reckoning positioning system as well as the fusion of two position coordinates in the dead reckoning positioning system and the ultrasonic laser positioning system. The elimination of accumulated errors in the dead reckoning positioning system is implemented by the ultrasonic laser positioning system through the data fusion unit.
Owner:ZHEJIANG YAT ELECTRICAL APPLIANCE CO LTD +1

Annular thin-wall article clamping device and using method thereof

The invention provides an annular thin-wall article clamping device and a using method of the device. The clamping device comprises an annular chassis; the chassis is provided with a radial regulation mechanism of a locating workpiece; the radial regulation mechanism is divided into an inner radial regulation mechanism and an outer radial mechanism; two radial regulation mechanisms position workpiece respectively from the inner side or the outer side of the workpiece; the chassis is respectively provided with track-directed sliding grooves for the two radial adjustment mechanisms; the inner end of the sliding groove of the inner radial regulation mechanism is provided with a stopping block; the outer end of the sliding groove of the outer radial regulation mechanism is provided with the stopping block; the sliding grooves of the two groups of radial regulation mechanisms are disposed at intervals; one of the two groups of radial regulation mechanisms is provided with an axial compacting mechanism for fixing the workpiece; and the axial compacting mechanism is displaced alternatively between the two groups of radial regulation mechanisms when turning the workpiece. The clamping device can realize the processing of two side walls of the workpiece by clamping the workpiece once, and is fit for the clamping of the workpieces with different specifications. The device has the characteristics of high use rate, strong practical applicability, good generality, time saving and labor saving, light labor intensity, high production efficiency and the like.
Owner:DONGFANG TURBINE CO LTD

Multi-vehicle coordinating lane changing control system and method based on vehicle-vehicle communication

The invention discloses a multi-vehicle coordinating lane changing control system and a multi-vehicle coordinating lane changing control method based on vehicle-vehicle communication, and belongs to the field of control over vehicles. The system comprises a sensing unit, a communication unit, a control unit and a human-computer interaction unit. The sensing unit is used for acquiring information of an own vehicle in real time, the communication unit is used for performing real-time interaction of information among vehicles, and the communication unit is used for making a decision of the coordinating lane changing feasibility and acquiring expected control quantities of the own vehicle and coordinating vehicles and realizing control over the vehicles. The method is based on the system, through collecting information of vehicles, i.e. the own vehicle, a front vehicle on an original lane, a front vehicle on a target lane and a behind vehicle on the target lane, motion statuses of the four vehicles having mutual effects are planned in a centralized manner in the lane changing process, and the own vehicle changes the lane smoothly through active coordinating among the four vehicles. By applying the multi-vehicle coordinating lane changing control system and the multi-vehicle coordinating lane changing control method based on the vehicle-vehicle communication, safety spaces among the vehicles can be fully used, the feasible lane changing chance is effectively increased, the lane changing safety is guaranteed, the driving comfort in the lane changing process is improved, and negative influences of lane changing behaviors on the upstream vehicles on the target lane are decreased.
Owner:BEIHANG UNIV +1

Intelligent detection device of defects of mobile phone outer shell based on machine vision

The invention discloses an intelligent detection device of defects of a mobile phone outer shell based on machine vision. The device comprises a transmitting device, detection systems, a degraded product unit and a computer; the transmitting device comprises two transmitting strips and a diversion air cylinder; each detection system respectively detects the frontage side, the left side, the rightside, the front side and the rear side of the mobile phone outer shell; each detection system comprises an illumination unit and an image collecting unit; the illumination unit illuminates one side of the outer shell of the mobile phone, and the image collecting unit photographs; collected image signals are transmitted to the computer; the computer recognizes the degraded mobile outer shell, and transmits the serial numbers of the mobile outer shell with defects to a degraded product rejecting unit; and the degraded product rejecting unit rejects the mobile phone outer shell with defects. According to the invention, defects such as scratches, burr, discoloration, dent, bubbles of the mobile phone outer shell can be detected, the degraded products are separated automatically, and the device has the characteristics of intelligence, high efficiency, stability and high accuracy.
Owner:SOUTH CHINA UNIV OF TECH
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