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33results about How to "Avoid choosing mistakes" patented technology

Sound source positioning method based on novel orthogonal matching pursuit algorithm

ActiveCN109375171AWide frequency rangeRealize precise screening effectPosition fixationSound sourcesImage resolution
The invention relates to the field of the identification and positioning of a noise source and particularly relates to a sound source positioning method based on a novel orthogonal matching pursuit algorithm. The method comprises a step of forming a measuring surface, a step of collecting sound pressure data at each sensor, a step of forming a focusing surface and obtaining a focusing point, a step of establishing a relationship between a sound source source-intensity vector and a microphone array sound pressure measurement value, a step of solving a sound source recognition model and obtaining the sound source source-intensity of each grid point of the focusing surface, and a step of identifying and positioning a sound source according to a module of the obtained sound source source-intensity of each grid point. According to the invention, the atomic selection process of the orthogonal matching pursuit algorithm is improved, therefore, the algorithm reconstruction performance under the condition of strong correlation between atoms is improved, the resolution of the sound source recognition is further improved, the high-resolution positioning of the sound source in a strong correlation environment is achieved, and at the same time, the ability to recognize low frequency and medium frequency signals is also effectively improved.
Owner:HEFEI UNIV OF TECH

Handheld identification system used in home education robot system

The invention relates to a handheld identification system used in a home education robot system, comprising a master controller, wherein the master controller is used for monitoring the working conditions of a bar code identification unit, a touch pad identification unit, a wireless data transmission unit, a power supply management unit and a man-machine interface unit; the bar code identification unit is used for transmitting bar code information on a read identification object to the master controller; the touch pad identification unit is used for reading information of the identification object clicked by a user and transmitting the information to the master controller; the wireless data transmission unit is used for converting data coded by the master controller into a radio signal, transmitting the radio signal and receiving a signal sent by a robot; the power supply management unit is used for managing power supply for the handheld identification system; and the man-machine interface unit is used for exchanging information with the user. By applying the system provided by the invention, automatic identification can be realized, a select error caused by manual identification can be avoided, and the identification accuracy can be improved, thus the system can be widely applied in the application field of various robots.
Owner:焦利民

Engineering geological surveying and mapping method and system based on three-dimensional laser scanning

The invention relates to the technical field of artificial intelligence, in particular to an engineering geological surveying and mapping method and system based on three-dimensional laser scanning. The method comprises the following steps: clustering three-dimensional point cloud data of engineering geology to obtain a plurality of point cloud clusters and the point cloud density; obtaining a plurality of standard point cloud clusters and the standard point cloud density by carrying out density clustering on the standard point cloud data of the engineering geology; judging the point cloud precision of the three-dimensional point cloud data by comparing the three-dimensional point cloud data with the standard point cloud data, and then obtaining the confidence coefficient of the point cloud cluster; performing connected domain analysis on the two-dimensional distribution diagram of the point cloud cluster to obtain a point cloud feature vector of the point cloud cluster; correcting the confidence coefficient by using the steep degree of the area where the point cloud cluster is located to obtain a new confidence coefficient; and combining the point cloud feature vector and the new confidence coefficient to obtain a geological score of the corresponding region. Feature analysis is carried out on the three-dimensional point cloud data meeting the point cloud precision, and the distribution features of the three-dimensional point cloud data are analyzed to ensure that an accurate engineering geological score is obtained, thereby preventing a construction position from being selected mistakenly.
Owner:徐一帆 +1

Household educational robot system

The invention relates to a household educational robot system. The system comprises a robot, a handheld recognition system and a charging management system, wherein, a user stores needed information into storage equipment in the robot, inserts a recognized object into the handheld recognition system, and interactively learns with the robot through the handheld recognition system; the robot and the handheld recognition system are recharged by the charging management system; and the handheld recognition system comprises a main controller which is used for monitoring the operation condition of abar code recognition unit, a touch panel recognition unit, a wireless data transmission unit, a power management unit and a man-machine interface unit, wherein, the bar code recognition unit transmits bar code information on the recognized object to the main controller, the touch panel recognition unit reads recognized object information clicked by the user and transmits the information to the main controller, the wireless data transmission unit converts data encoded by the main controller into a wireless signal, then sends out the signal and receives a signal sent by the robot at the same time, the power management unit manages power supply of the handheld recognition system, and the man-machine interface unit performs information interaction with the user. The household educational robot system can be widely applied to various robot application fields.
Owner:焦利民

Method and device for analyzing communication instruction of sorting machine for final test equipment

The invention provides an analysis method and device for a communication instruction of a sorting machine of final test equipment. The method is executed by a final test device connected with the sorting machine, and the communication instruction records one of the following items: the occupancy state of at least one station and the grading value of a device corresponding to the at least one station; the method comprises the following steps: extracting the same content of an obtained first communication instruction and an obtained second communication instruction; extracting different contents of the obtained first communication instruction and the second communication instruction; and according to the same content and the different contents, analyzing a coding mode of a character used for indicating the occupancy state of the station or a coding mode of a character used for indicating the gear value of a device corresponding to the station in the communication instruction. According to the method, various types of communication instructions used for the sorting machine of the final test equipment can be analyzed, the sorting machine is used for supporting various types of communication instructions, reusability is good, operation efficiency is high, and the workload and development time for developing a driver corresponding to a new type of instruction are saved.
Owner:BEIJING HUAFENG TEST & CONTROL TECH CO LTD

Storage bin access control equipment and system

The invention provides storage bin access control equipment and system. The storage bin access control equipment comprises an access control lock cabinet and a storage bin lock, wherein the access control lock cabinet is provided with an indication lamp; the access control lock cabinet is connected with the storage bin lock; the access control lock cabinet receives unlocking signaling transmittedby a PLC (Programmable Logic Controller) control cabinet to turn on the indication lamp; the access control lock cabinet supplies power to unlock the storage bin lock; the storage bin lock is unlockedunder the action of external thrust; the access control lock cabinet receives locking signaling transmitted by the PLC control cabinet to turn off the indication lamp; the access control lock cabinetsupplies power to lock the storage bin lock and the storage bin lock is locked under the action of gravity. According to the storage bin access control equipment and system, provided by the invention, a storage bin corresponding to raw materials and a storage bin state are automatically confirmed and manual confirming is not needed; a power supply manner of the storage bin lock is changed throughthe access control lock cabinet so that the storage bin lock is opened under the action of the external thrust and automatically closed and the accuracy of raw material storage information is ensured; materials are convenient to ram at night and time is saved. A condition that the selection of the storage bin goes wrong is avoided and doping of different types of raw materials is not caused; a condition that a product has quality problem, caused by the fact that the raw materials are doped, is reduced.
Owner:北京金蝉科技有限公司

A Sound Source Localization Method Based on Orthogonal Matching Pursuit Algorithm

The invention relates to the field of the identification and positioning of a noise source and particularly relates to a sound source positioning method based on a novel orthogonal matching pursuit algorithm. The method comprises a step of forming a measuring surface, a step of collecting sound pressure data at each sensor, a step of forming a focusing surface and obtaining a focusing point, a step of establishing a relationship between a sound source source-intensity vector and a microphone array sound pressure measurement value, a step of solving a sound source recognition model and obtaining the sound source source-intensity of each grid point of the focusing surface, and a step of identifying and positioning a sound source according to a module of the obtained sound source source-intensity of each grid point. According to the invention, the atomic selection process of the orthogonal matching pursuit algorithm is improved, therefore, the algorithm reconstruction performance under the condition of strong correlation between atoms is improved, the resolution of the sound source recognition is further improved, the high-resolution positioning of the sound source in a strong correlation environment is achieved, and at the same time, the ability to recognize low frequency and medium frequency signals is also effectively improved.
Owner:HEFEI UNIV OF TECH

Method for breeding all sterile line with genetic stability of rape recessive epistasis genic male sterile line by means of molecular marker

The invention, belonging to the field of molecule breeding of rape, relates to a method for breeding an all sterile line with genetic stability of a rape recessive epistasis genic male sterile line by means of molecular marker. According to the invention, by the close link of molecular marker and fertility genes, the genotype of molecular mark is tracked and selected to select a program of the genotypes of a two-type line and a temporary maintainer line, so that the breeding strategy of the sterile line controlled by polygenes is improved from a process of complete phenotype identification toblanket search of genotype identification to a high efficiency breeding process of well-targeted marker genotype selection first to actual phenotype identification finally, by backcrossing and selfing multi-generation and field phenotype identification, the homozygous two type line and temporary maintainer line with same genetic background and uniform growth in fields are obtained, and then all sterile line seeds with genetic stability are produced for largely plantation. Therefore, the current situation that seeds for largely plantation of the sterile line are actual three-way cross hybrids is changed, and the problems of bad uniformity and declined advantages caused by the current situation are avoided.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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