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303results about How to "Reduce dependency" patented technology

Multi-mobile robot control system based on following pilot formation

The invention discloses a multi-mobile robot control system based on following a pilot formation, which comprises an experimental environment image acquisition module, an upper computer positioning module, a car-like mobile robot group, a communication module and a control algorithm module, wherein the experimental environment image acquisition module is used for acquiring video images of a plurality of mobile robot formation experimental environments; the upper computer positioning module calculates absolute position information of each robot in real time by using an image processing algorithm through a coordinate system calibrated via a camera; the car-like mobile robot group is composed of a plurality of single mobile trolleys, and an autonomous decision is made to complete the formation task; the communication module performs data interaction and information sharing through a wireless communication manner; the control algorithm module coordinates and controls the whole system to complete the formation task based on the pilot-followed formation algorithm. The multi-mobile robot control system based on following a pilot formation in the invention is a multi-robot formation systemwhich is based on visual positioning and suitable for the indoor and has the characteristics of strong reliability and strong real-time performance.
Owner:NANJING UNIV OF SCI & TECH

System and method to concurrently execute a plurality of object oriented platform independent programs by utilizing memory accessible by both a processor and a co-processor

The invention achieves efficient execution of programs belonging to an object oriented platform independent language technology like Java, .NET in a multitasking environment by utilizing a processor, a co-processor (executing machine independent instructions) and memory that is accessed by both said processor and said co-processor. The co-processor is agnostic of format of the executables of the object oriented platform independent programs and operates on a composite data structure to execute a program. The composite data structure is a logical representation of an objected oriented platform independent computer program and includes instructions, object pointers, metadata, etc. Said composite data structure is independent of any object oriented platform independent technology like Java, .NET, etc. The co-processor relies on a native program to reduce executable file(s) of an objected oriented platform independent program to the said composite data structure. The invention allows the co-processor to perform scheduling, context switching and aids garbage collection apart from executing the programs of languages like Java, .NET efficiently. The invention aims at providing a co-processor as an alternative to using complex software like Just In Time (JIT) compilers to achieve high performance execution of object oriented platform independent language programs.
Owner:MITRA SUMANRANJAN S

Camera shooting measuring method for track geometric parameter

A method for measuring geometric parameters of a track by adopting a camera comprises the following steps: a measuring vehicle is placed on the track to be measured; a camera device is fixedly installed on one end inside the measuring vehicle; an optical axis of the camera device is in parallel with the plane of the bottom of the measuring vehicle; two sign posts are arranged on the track at the other end inside the measuring vehicle and are respectively perpendicular to the two sides of the plane of the bottom of the measuring vehicle; the two sign posts are at different heights and at the distance of r; a cooperation sign is arranged at the top end of each sign post; the sign posts can only move in the direction perpendicular to the plane of the bottom of the vehicle and in the transversal direction; a wheel at the bottom of the sing post moves, and is tightly attached to the inner side of a steel track; when the measuring vehicle moves on the track to be measured, the camera device is utilized to capture images of the cooperation signs at different time; and the images is processed through image processing and data processing on a real-time basis so as to acquire the geometric parameters of the track. The method meets the requirements of modern track construction and development, satisfies the requirements of high precision, high reliability and high automatic degree detection, and has good application prospect in the railroad engineering field.
Owner:张小虎 +3

Method and device for determining exposure time of aerial photogrammetric camera in light-small unmanned aerial vehicle

The invention relates to the field of aerial photogrammetry of unmanned aerial vehicles and particularly protects a method for determining the exposure time of an aerial photogrammetric camera in a light-small unmanned aerial vehicle. According to the method, a flight control system of the unmanned aerial vehicle generates an exposure test signal and an exposure control signal according to preset exposure control information; the aerial photogrammetric camera carries out an exposure action according to the exposure test signal and simultaneously generates a synchronous signal; the measuring system determines exposure delay time of the aerial photogrammetric camera according to the receiving time of the exposure test signal and the receiving time of the synchronous signal; a GNSS (Global Navigation Satellite System) determines accurate exposure time of the aerial photogrammetric camera according to the exposure delay time and the receiving time of the exposure control signal. The method has the advantages that the exposure time of the aerial photogrammetric camera can be accurately determined, no control or few control points can be realized, the accuracy of exterior orientation elements of interpolation-calculation aerial photogrammetric photographs is greatly improved, simultaneous exposure of a plurality of cameras is realized, and the size and the power consumption of the GNSS are reduced.
Owner:CHINA TOPRS TECH

Nudity bed rock information extraction method based on soil index

The invention discloses a nudity bed rock information extraction method based on a soil index. Specifically, a holomorphy soil index and a normalized differential vegetation index are respectively calculated according to a red light band of a remote-sensing image and a near-infrared band, and a soil index chart and a normalized differential vegetation index are obtained. Nudity bed rock information is extracted according to characteristic differences of rock information and soil information in the soil index chart, and non-vegetation information is extracted through the normalized differential vegetation index chart. A picture element of the nudity bed information and the non-vegetation information is extracted to obtain the nudity bed rock information. According to the nudity bed rock information extraction method based on the soil index, a remote-sensing image picture is utilized, the extraction of the nudity bed rock information is achieved, bed rock nudity rate of a land parcel pattern spot can be analyzed based on the nudity bed rock information chart, and data support for karst area water and soil loss and stony desertification grading is provided. The nudity bed rock information extraction method based on the soil index has the advantages of being simple, fast, accurate and capable of not relying on an operator completely.
Owner:PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION

Intelligent control system and method for dense medium separation process

The invention relates to an intelligent control system and method for a dense medium separation process, and belongs to the technical field of separation processing. The problems that density settingof existing separation depends on experience to a greater extent, other factors which influence separation density are not considered comprehensively, product quality control lags behind, and a control system is intervened manually are solved. The intelligent control system includes a first ash content measurement device for measuring raw coal ash content, a second ash content measurement device for in-time measuring clean coal ash content obtained after raw coal is separated by a circulating medium, a production index prediction module for processing the raw coal ash content and the clean coal ash content to obtain a circulating medium density set value and a circulating medium density adjustment module, wherein the circulating medium density adjustment module adjusts the circulating medium density based on a deviation between the circulating medium density set value and the measured value of the circulating medium density. According to the intelligent control system, the dependence of the separation density setting process on experience is effectively reduced, historical data are fully used, and the timeliness of product quality control is improved.
Owner:CHINA UNIV OF MINING & TECH

Virtual reality bedside rehabilitation training system and method

The invention discloses a virtual reality bedside rehabilitation training system and method. The system comprises a motion capture device, a mobile device and a processor. The processor is installed in the mobile device to form an integrated bedside device, and the processor is connected with the motion capture device. The motion capture device is connected with patient's limbs and used for acquiring patient's limb motion data in real time. The processor comprises a data receiving module, a processing module and a displaying module. The data receiving module is used for receiving the limb motion data acquired by the motion capture device. The processing module is used for emitting a driving signal to drive a three-dimensional human model to act according to the limb motion data, and assessing training on a patient according to the limb motion data to obtain an assessment result. The display module is used for displaying changes of three-dimensional human model's actions in real time according to the driving signal, and the assessment result. The virtual reality bedside rehabilitation training system is low in cost, small in land occupation and convenient to move, so the system can be disposed beside a patient's bed to training a patient in bed in the early stage of rehabilitation.
Owner:DIH TECH CHINA CO LTD
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