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644results about How to "Accurate collection" patented technology

Automatic guided vehicle navigation control system and navigation control method thereof

The invention discloses an automatic guided vehicle navigation control system and a navigation control method thereof. The automatic guided vehicle navigation control system comprises a central controller, sub controllers, a QR (Quick Response) code positioning system, a grid path navigation system and a goods register system, wherein the sub controllers are arranged on each automatic guided vehicle and connected with the central controller; and the QR code positioning system, the grid path navigation system and the goods register system are arranged on each automatic guided vehicle and respectively connected with the corresponding sub controller. According to the automatic guided vehicle navigation control system and the navigation control method thereof disclosed by the invention, the QR acquisition sensing technology is adopted for acquiring coordinate information of the automatic guided vehicle in a storehouse, so that unified monitoring and management are convenient; the grid path navigation system is adopted for judging the deviation between the practical operation track of the automatic guided vehicle and the predetermined track, so that two wheel differential base plates are adjusted to carry out track compensation, and therefore, the automatic guided vehicle is enabled to drive according to the planned path. Moreover, the structure is simple, the installation is convenient and the navigation transportation of the automatic guided vehicle is convenient.
Owner:HEFEI LINGXIANG INFORMATION TECH

Low-altitude autonomous navigation system for rotary-wing unmanned plane

The invention discloses a low-altitude autonomous navigation system for a rotary-wing unmanned plane. The low-altitude autonomous navigation system is composed of a data acquisition device, a data preprocessing module, a data fusion module, a guidance control loop module and an attitude control loop module. The data preprocessing module is used for carrying out sampling filtering and error compensation on current location data information collected by the data acquisition device; the data fusion module is used for carrying out fusion and updating and obtaining a current position and speed of the rotary-wing unmanned plane; the guidance control loop module is used for calculating an expected attitude angle and an expected height value; and the attitude control loop module is used for generating a controlled quantity. According to the technical scheme, a problem of poor attitude estimation precision of the conventional navigation system can be solved; and requirements of high-precision heading attitude calculation and position and speed fusion of the rotary-wing unmanned plane can be met. High-precision filtering of the system is realized. On the basis of the analysis and calculation of the autonomous navigation system, the flight route and height can be corrected and the flight attitude can be adjusted autonomously; and the autonomous flight of the unmanned plane can be realized.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Method and device for personalized searching of commodities sequenced based on attributes

The invention belongs to the technical field of electronic commerce, and relates to a method and a device for personalized searching of commodities in an electronic commerce activity, in particular to a method and a device for personalized searching of commodities which are sequenced based on attributes. The method and the device are used by a user to search and find needed commodities by using a computer during online shopping. The method comprises the following steps of: collecting and analyzing interests of the user in commodity attribute information by analyzing electronic commerce data from the internet; converting the commodity attributes concerned by the user into attribute sequencing knowledge in data mining; merging the attribute sequencing knowledge as future knowledge; clustering the future knowledge by using a semi-supervised clustering method; and finally, sequencing the commodities in a clustering result, and presenting commodity searching results to the user so as to guide the user to select the commodities. The method is simple in technical process, convenient for operation, accurate in information acquisition, scientific in sort order and high in searching speed, and the device is simple in structure and flexible in operation, so the method and the device can be used for replacing a commodity searching technology and commodity searching equipment in the conventional electronic commerce.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY

Fingerprint database construction method of WiFi indoor positioning system

The invention discloses a fingerprint database construction method of a WiFi indoor positioning system. The method comprises the following steps: determining the position and the coordinates of a reference point, capturing the media access control address of access points at the reference point, collecting signal strength of all the access points in a media access control address list, and sending a sampling file to a server; conducting statistical treatment on signal strength data in the sampling file to obtain a fitting probability distribution curve, conducting correlation correction on the fitting probability distribution curve, conducting truncation processing on the probability distribution curve obtained after the correlation correction, calculating the probability of each decibel milliwatt value, conducting normalization processing, and finally generating a fingerprint database. The method solves the problems that the establishment process of a traditional fingerprint database is longer in consumed time, the processing is tedious, the fingerprint information is insufficient, and updating and maintenance are not facilitated. Due to the parallelization of fingerprint collection, the establishment of the fingerprint database is accelerated, optimized processing is carried out on the collected fingerprint data, and the fingerprint database is more accurate and comprehensive.
Owner:SHANGHAI JIAO TONG UNIV

Internet of Things based intelligent IDC (Internet data center) computer room monitoring system

The invention relates to an Internet of Things based intelligent IDC (Internet data center) computer room monitoring system which is composed of a sensing layer, a converging layer, a scheduling layer and a corresponding feedback control portion. Data are acquired through various sensors to be transmitted to the converging layer for checking and filtering processing through the sensing layer prior to being transmitted to a control center through a GPRS (general packet radio service) network or an Ethernet network; after the control center receives the environmental data and server status information inside a computer room, the data are analyzed and subjected to periodic processing; if environmental parameters and deviating thresholds are found, a control instruction is sent to the feedback control portion to regulate a computer room environment and server status inside the computer room. Since the control instruction can be accurately issued and processed by means of accurately acquiring, uploading and processing the environment and equipment data information inside the IDC computer room in real time and dynamically regulating the computer room environment and the server status inside the computer room, intelligent monitoring of the environment and equipment inside the IDC computer room is realized, and third-party equipment is enabled to be integrated into an existing system by additional arrangement of a wireless module.
Owner:浪潮创新科技股份有限公司 +1

Time-phased automatic rain sample sampling device

The invention provides a time-phased automatic rain sample sampling device. According to the time-phased automatic rain sample sampling device, a collection hopper is mounted in the middle of an instrument top disc; the instrument top disc is mounted at the top of a barrel; solenoid valves, a pressure sensor and a rotary device are connected with a power supply and a control system; a sampling bottle tray is mounted in the barrel; a sampling bottle is located above the sampling bottle tray; a hollow rotary shaft is located at the center of the barrel; a rotary barrel is connected with the hollow rotary shaft; the rotary device is connected with the hollow rotary shaft; a water outlet of the collection hopper is located above the rotary barrel; a pipe is connected with the rotary barrel; a water outlet of the pipe is located above the sampling bottle; a part, which is close to the water outlet, in the collection hopper is provided with the pressure sensor and the solenoid valve; the pressure sensor is located above the solenoid valve and the pipe is internally provided with the solenoid valve; the hollow rotary shaft is internally provided with the solenoid valve. The time-phased automatic rain sample sampling device is simple in structure, can be used for automatically and accurately collecting rain samples at fixed time, and achieves environment-friendly and energy-saving effects.
Owner:HOHAI UNIV

Geologic field information collection system, geologic field information collection method and application method of collection system

The invention relates to a geologic field information collection system. The collection system is designed by adopting a platform-based concept and integrates a project management module, a GPS (global positioning system) module, a geologic compass module, an image system module and a character system module, collection is performed by dividing geologic field sources into points, lines and planes, and information of geologic medium sources like geologic points, fault points, hydrologic points, drill holes, fractures, measured formation sections and pits is output in the form of geologic field information collection card module pieces and Excel data files respectively, so that requirements on filing of original data are met, direct utilization of geologic field information is realized, and integration of outdoor work and indoor work is realized. The collection system comprises a system function module, a geologic field information collection card module and a data output module. By the system, the geologic field information can be collected quickly and accurately; efficiency of field work and data accuracy are improved by providing functions of quick GPS positioning, a measuring ruler, an angulometer, a geologic compass and the like.
Owner:长江岩土工程有限公司

High-precision vegetable and fruit quick intelligent selecting equipment

The invention discloses high-precision vegetable and fruit quick intelligent selecting equipment. The high-precision vegetable and fruit quick intelligent selecting equipment comprises a feeding conveying device, a horizontal conveying device and a pneumatic mechanism, wherein a horizontal conveyer belt comprising rollers is arranged on the horizontal conveying device; one or more groups of screening and discharging mechanisms which are opposite to the pneumatic mechanism in an up and down manner are arranged above the horizontal conveying belt; each screening and discharging mechanism comprises a discharging platform which is fixedly arranged above the horizontal conveying device; anti-falling baffles are respectively arranged on the front side and the rear side of each discharging platform; a rotational flow cover is arranged on each discharging platform; the side edge of each rotational flow cover is arc-shaped; a substandard product blowing-out opening is formed by two side edges of each rotational flow cover and two side edges of the corresponding discharging platform; each substandard product blowing-out opening is in up-and-down correspondence with air jet holes of the pneumatic mechanism. According to the high-precision vegetable and fruit quick intelligent selecting equipment disclosed by the invention, the screening and discharging mechanisms adopting special structures, a feeding and conveying device and rollers in the horizontal conveying device are arranged, the effects of positioning and precise photographing of vegetables and fruits are increased in an omnidirectional manner, and the screening efficiency is also greatly improved.
Owner:郑州市中昕智能设备有限公司

Talus slope freezing and thawing circulating action deformation physical model experiment apparatus and experimental method

InactiveCN104807975ASolve the problem of freezing but not melting (especially in rock piles)Facilitate accurate collectionEarth material testingTest efficiencyExperimental methods
The invention relates to a talus slope freezing and thawing circulating action deformation physical model experiment apparatus and experimental method. The talus slope freezing and thawing circulating action deformation physical modeling experiment apparatus comprises a base placed on a talus slope, wherein a metal base plate and an organic glass model box are sequentially arranged on the base from bottom to top; a front door is arranged on the organic glass model box; a water drainage hole is formed in the bottom of the front door; a flow velocity rheometer is arranged between the water drainage hole and the front door; snow melting devices are respectively arranged on the two sides, and at the front part and the top of the organic glass model box; a thermometer is arranged at the top of the organic glass model box; a loading device is arranged at the rear part of the organic glass model box; at least a displacement meter is arranged inside the talus slope. The experiment apparatus disclosed by the invention can solve the problems that the existing talus slope physical simulator is single in test result, unstable in test result and incapable of simulating the freezing and thawing circulating action, has the characteristics of being convenient to operate and high in testing efficiency, and is suitable for simulation tests on slope deformation and breakage induced by freezing and thawing circulation and tunnel portal slope excavation.
Owner:SOUTHWEST PETROLEUM UNIV

Calibration method and system of multi-spectrum collecting system

The invention provides a calibration method of a multi-spectrum collecting system. The calibration method includes the following steps: collecting scene information under a standard light source through the double-path multi-spectrum collecting system to obtain two paths of multi-spectrum images, carrying out spectrum calibration on spectrums at sampled points according to spectrum information of the sampled points of one path of multi-spectrum images, the spectrum characteristic of the standard light source and the light path characteristic of the multi-spectrum collecting system, providing two scanning videos in different scanning directions, carrying out the demonstration through a calibration video demonstration device, respectively shooting the two scanning videos during the demonstration, and obtaining matching points of the sampled points according to the two shot scanning videos to complete space position calibration of the sampled points. According to the calibration method, spectrum calibration can be accurately carried out on the double-path multi-spectrum collecting system, alignment matching can be accurately carried out on the space positions of the two paths of collected images, and therefore the double-path multi-spectrum collecting system can effectively collect spectrum images. The invention further provides a calibration system of the multi-spectrum collecting system.
Owner:TSINGHUA UNIV
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