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8389results about How to "Guaranteed safe operation" patented technology

Sensor module of automatic driving system, automatic driving system and automatic driving method

The invention discloses a sensor module of an automatic driving system, an automatic driving system and an automatic driving method. The sensor module comprises a front camera, a rear camera, a millimeter-wave radar group and an ultrasonic-wave radar group, and is characterized in that the front camera is used for recognizing lane lines, traffic marking lines, traffic signs and obstacles in front of a vehicle; the rear camera is used for recognizing lane lines and obstacles in rear of the vehicle; the millimeter-wave radar group comprises a plurality of short-range millimeter-wave radars and one or more middle-range millimeter-wave radars, the short-range millimeter-wave radars can cover all areas around the vehicle within 360 degrees and are used for detecting obstacles within the coverage scope and judging the position and the speed of the obstacles, and the middle-range millimeter-wave radars are used for detecting obstacles in front of the vehicle and judging the position and the speed of the obstacles; and the ultrasonic-wave radar group comprises a plurality of ultrasonic-wave radars, can cover all areas around the vehicle within 360 degrees and are used for detecting obstacles. The sensor module disclosed by the invention improves the reliability of the automatic driving system and reduces the security risk.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

High voltage electricity transmission line monitoring method based on wireless communication and optical communication

The invention relates to a high-tension transmission line monitoring method on the basis of wireless communication and photo-communication for overcoming the faults of limited functions, small band width, high running cost and low reliability in the prior art. The method comprises the following steps: 1. setting wireless monitoring nodes on the transmission line towers; selecting a particular tower along the line at an interval of 20-30 kilometers as a convergent point tower and simultaneously installing wireless monitoring nodes and photo-communication nodes on the convergent point tower and transforming plants on the two ends of the line; 2. the wireless monitoring nodes acquiring monitoring data, the wireless monitoring nodes of the towers in the area where the convergent point tower locates transmit the monitoring data to the photo-communication nodes on the convergent point tower by using a multi-hop forwarding method, each photo-communication node transmits the monitoring data to a monitoring center by using a multi-hop forwarding method. According to the invention, information monitored by thousands of sensors installed on towers of each level can be transmitted back to a junction centre for realizing the real-time monitoring of the whole high-tension transmission line.
Owner:NORTHWEST CHINA GRID

Virtual coupling small-group train control system and method based on train-train communication

The invention discloses a virtual coupling small-group train control system and method based on train-train communication, and is a scheme which guarantees running safety and improves train running efficiency. In the scheme, in a small-group range, a main train continuously detects environment awareness and state data of the main train, environment awareness and state data of a front train are acquired by point-to-point direct communication, a control strategy is formed by comparison calculation according to a calculation result, and a rear train is adjusted to follow the front train within adynamic safe distance. By the strategy, the main train is controlled to follow the front train adaptively, and the trains in a small group can be assisted to cooperatively make correct active train control decision and operation. By the scheme, the running performance of the system can be greatly improved, requirements of flexible operation of urban rail transit can be met well, development spaceand potential are huge, and the virtual coupling small-group train control system and method based on train-train communication are future development tendency and the development direction of an urban rail transit traffic signal system.
Owner:SIGNAL & COMM RES INST OF CHINA ACAD OF RAILWAY SCI +3

Appearance inspection machine for printed circuit board

The invention provides a testing machine used for testing the appearance of a printing circuit board, comprising a frame which is provided with a transmission mechanism; the front end of the transmission mechanism is provided with an upper plate mechanism; the transmission mechanism is internally provided with two scanning mechanisms; a panel turnover mechanism is arranged between the two scanning mechanisms; the tail part of the transmission mechanism is butt-jointed with a sorting mechanism; and all mechanisms are controlled by control host machines cooperatively. The testing machine adopts a whole-line digital camera photographing technique to detect the defects on the printing circuit such as foreign matter, exposed copper, supplemented oil, scraping, poor gold-plating, character error, non-uniform green oil, non-uniform welding disc, non-uniform depth of channel, residual copper, omitted printing, developing and the like, automatically feeds and sorts the nondefective and waster, improves the simpleness and reliability of the operation, can observe the defects of the board in real-time by adopting a powerful image processing and analysis software system to provide a plurality of image processing and analysis systems, has quick detection speed, high detection efficiency, safe and reliable equipment, simple operation, is convenient and easy to be learned and meets the man-machine interaction.

Remote maintenance decision system of engineering machinery and method thereof

The invention relates to a remote maintenance decision system of engineering machinery and a method thereof. The system comprises an information acquisition terminal, a client and a maintenance decision center. The information acquisition terminal acquires characteristic parameter information of a part of the engineering machinery in real time. The maintenance decision center comprises a life cycle phase determination module, a part residual life prediction module and a fault diagnosis and maintenance decision function module. The life cycle phase determination module receives the real-time characteristic parameter information and determines a present life cycle phase of the part. The part residual life prediction module carries out residual life prediction on the part at a normal phase or a performance decline phase. The fault diagnosis and maintenance decision function module carries out fault reason diagnosis on the part at a failure phase and provides a maintenance scheme. The client displays a residual life, or a fault reason and the maintenance scheme of the part. According to the system and the method of the invention, the life prediction or the fault diagnosis can be carried out on the part, and remote maintenance is carried out on the engineering machinery.
Owner:中科云谷科技有限公司

Transformer substation inspection robot holder control method based on visual servo

The invention discloses a transformer substation inspection robot holder control method based on visual servo. The transformer substation inspection robot holder control method comprises the steps of: saving equipment images of each preset position of a transformer substation shot by a transformer substation inspection robot into a template library; acquiring the equipment images at the preset positions, and uploading the equipment images to a background service center; invoking the equipment images in the template library by means of the background service center, adopting an SIFT algorithm for matching a real-time inspection image with a template image, and registering common feature points of the two images; acquiring position information of an equipment region in the acquired image; verifying whether the acquired image contains a complete equipment region to be detected, and counting times of visual servo; and subjecting an equipment image acquired at the preset position by the inspection robot the last time to pattern recognition processing, and outputting real-time operating state of the equipment. The transformer substation inspection robot holder control method based on visual servo allows the robot to observe operating state details of the power equipment at far distance and long focal length, and realizes the purpose that the inspection robot observes the transformer substation equipment in a full-coverage manner.
Owner:STATE GRID INTELLIGENCE TECH CO LTD

Electromobile charging path planning method based on intelligent transportation system

The invention relates to an electromobile charging path planning method based on an intelligent transportation system, belonging to the technical field of operation and control of electric systems. The electromobile charging path planning method comprises the following steps of: firstly, a traffic control center judges whether an electromobile needs to be charged according to information of the electromobile; if necessary, an owner is prompted to charge the electromobile; the traffic control center searches all charging stations in the maximum range of the electromobile as candidate charging stations and calculates the charging probability of the electromobile in each charging station; a charging load is predicated according to the charging probability and is transmitted to an electric system scheduling center, and the electric system scheduling center calculates the allowable maximum charging power of each charging station and transmits the allowable maximum charging power to the traffic control center; and the traffic control center transmits traveling and charging total time sequence obtained according to the maximum charging power to the owner. The electromobile charging path planning method provides an optimal charging path for the owner of the electromobile and improves the traveling efficiency of the owner. In addition, the operation requirements of the electric system are sufficiently considered in the selection of the charging stations, and therefore the safe operation of the electric system is guaranteed.
Owner:TSINGHUA UNIV

Method for forecasting optical output power and electric energy production of photovoltaic power station

The invention relates to a method for forecasting optical output power and electric energy production of a photovoltaic power station, belonging to the technical field of power generation and distribution. The method is characterized by comprising the following steps: on-site data acquisition-comparison with historic data-output of the forecasting result. The forecasting accuracy is so accurate that annual average between the forecasting result and actual result is no more than 5%; short-time forecasting, daily forecasting, weekly forecasting, monthly forecasting and annual forecasting can be carried out; as far as power grid dispatching is concerned, starting-up mode and operation mode of the photovoltaic power station and a conventional power station in a certain period can be reasonably arranged according to the forecasting, so that the power grid can operate stably, electric energy production of the photovoltaic power station can be improved, technical evidence and theoretic guidance can be provided for establishment of the large capacity photovoltaic power station, safe and efficient operation of the photovoltaic power station can be ensured and smooth implementation of national new energy strategy can be facilitated.
Owner:青海国泰节能技术研究院 +1

A train track fastener defect detection method

The invention provides a train track fastener defect detection method. The method comprises the following steps of constructing a Faster R-CNN network model, wherein the Faster R-CNN network model comprises a region generation network RPN and a fast region convolutional neural network Fast R-CNN, and the network initialization mode adopts pre-trained parameter initialization of similar tasks, andthen the Faster R-CNN network model is trained by using training set data; shooting and acquiring a fastener image on the subway line through photographing equipment; and inputting the fastener imageinto the trained Faster R-CNN network model, extracting a fastener area in the fastener image by the Faster R-CNN network model by using convolution operation and pooling operation, and performing defect type detection on the fastener area by using a loss function. According to the method, through the combination of the region generation network and the fast region convolutional neural network, the autonomous learning and the feature extraction of the training picture are carried out, so that fastener positioning and defect automatic detection can be carried out on the acquired large-size image, the intelligent degree is higher, the realization efficiency is higher, and the model applicability is stronger.
Owner:BEIJING JIAOTONG UNIV

Intelligent online monitoring and pre-warning system for cable operation condition

The invention relates to an intelligent online monitoring and pre-warning system for cable operation condition. The intelligent online monitoring and pre-warning system comprises a monitoring terminal and a monitoring center master station, wherein the monitoring terminal acquires monitoring parameters of the cable operation condition, such as the grounding current of the metal protective layer of the cable, cable joint temperature, combustible gas content, poisonous gas content, oxygen gas content, smoke, water level and manhole cover security, in real time and reports the acquisition data to the monitoring center master station in a timing manner through a wireless network; the monitoring center master station is used for timely carrying out storage, statistic, analysis, display and processing on the reported acquisition data and has functions of acquiring synthetic data of cable operation, monitoring the operation state in real time, displaying image data, pre-warning a fault and giving an alarm, carrying out statistic analysis of information data and the like. The intelligent online monitoring and pre-warning system can provide an effective monitoring method for ensuring the cable trench line security, ensure that the high-voltage cable line runs stably and reliably and greatly improve the power supplying reliability.
Owner:STATE GRID CORP OF CHINA +1

Microchannel enhanced heat exchange system of rotary room-temperature magnetic refrigerator and heat transfer method thereof

The invention discloses a microchannel enhanced heat exchange system of a rotary room-temperature magnetic refrigerator and a heat transfer method thereof. The system comprises a refrigerant disc, a cold end heat exchanger, a hot end heat exchanger and a solution pump, wherein the cold end heat exchanger and the hot end heat exchanger are connected with the refrigerant disc. the refrigerant disc comprises a refrigerant bed, an inner circle collecting tank, an outer circle collecting tank, four pairs of interzone adiabatic baffles and a plurality of intra-zone adiabatic baffles; the refrigerant bed comprises a plurality of trapezoidal microchannel flat tubes, an upper magnetic refrigerant plate and a lower magnetic refrigerant plate; the trapezoidal microchannel flat tubes, the upper magnetic refrigerant plate and the lower magnetic refrigerant plate are arranged between the inner circle collecting tank and the outer circle collecting tank; and the trapezoidal microchannel flat tubes are arranged between the upper magnetic refrigerant plate and the lower magnetic refrigerant plate. The heat transfer method is characterized in that the heat transfer fluid experiences a cycle of adiabatic excitation and demagnetization after passing through the different zones of the microchannel enhanced heat exchange system; and the rotary magnetic refrigerator recirculates the processes to realize refrigeration. In the invention, the characteristic that the microchannel can effectively enhance heat exchange due to scale effect is adopted and the microchannel is applied to the refrigerant bed, thus improving the efficiency of the refrigerating system and reducing corrosion of the heat transfer fluid to the magnetic refrigerant.
Owner:SOUTH CHINA UNIV OF TECH
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