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690results about How to "Avoid influence" patented technology

Road waterlogging monitoring and releasing method based on internet of things technology

The invention discloses a road waterlogging monitoring and releasing method based on an internet of things technology, and solves the technical problem of traffic paralysis caused by waterlogging of a road section. The method is implemented by means of a waterlogging monitoring system; the structure of the waterlogging monitoring system comprises a group of front-end acquiring devices, a monitoring center provided with a central processing unit and a group of outdoor traffic information display screens; and each front-end acquiring device comprises a direct-current power supply circuit arranged in a waterlogged road section, a water level sensor, a microprocessor and a wireless communication module and is characterized in that the water level sensor is connected with the microprocessor; the microprocessor is connected with the monitoring center by means of the wireless communication module; and the monitoring center is connected with the outdoor traffic information display screens. By the road waterlogging monitoring and releasing method, one who goes out conveniently knows the details of the waterlogging of the road section which one is about to go by in advance so as to plan the road section in advance and avoid an accident that a vehicle drives into the waterlogging and is flooded; and meanwhile, the monitoring center also can find the waterlogging in time and inform related departments of drainage in time, so that the great influence of long-time waterlogging on traffic is avoided.
Owner:河北向阳电子集团有限公司

Thread baking thread process control method

The invention relates to a method for controlling the tobacco drying process, which is characterized in that the whole tobacco drying process is divided into a head stage, a middle stage, and a tail stage; the head stage adopts an adaptive learning temperature rising control method, a control system automatically adjusts the temperature in the next temperature rising according to the previous humidity control effect, and the low drum speed is adopted in the heat stage; the middle stage leads water parameters at an outlet into the control system, forecast PID control is adopted to feed back and correct to realize the automatic control for the temperature of the cylinder wall of a tobacco drying cylinder; the tail stage lowers the temperature of the tobacco drying cylinder in advance, closes a steam heater on the cylinder wall and a cyclic hot blast heater in advance, increases the air intake speed, reduces the drawing air speed, and accelerates the drum speed. The tobacco drying process controlling means has the advantages that the influence on the moisture content at the tobacco drying outlet caused by the nonlinearity and the large time delay during the original tobacco drying procedure control process is overcome, the anti-interference ability is strong, various changes of operation conditions can be adapted, and the control of the moisture content at the tobacco drying outlet can be led to achieve higher control precision.
Owner:SHANGHAI TOBACCO GRP CO LTD

Method and system for screening potential traffic safety hazard road sections

The invention discloses a method and system for screening potential traffic safety hazard road sections. The method for screening potential traffic safety hazard road sections comprises the steps of obtaining a map data base containing geographic data of roads and a road traffic accident data base containing traffic accident data; reading the geographic data of the roads from the map data base and the traffic accident data from the road traffic accident data base; utilizing the geographic data of the roads to generate a road route network and displaying the generate road route network in an interactive interface; utilizing the traffic accident data to calibrate accident points in the road route network; confirming accident blackspots according to the accident points calibrated in the road route network; confirming the potential safety hazard type of the accident blackspots to obtain the potential traffic safety hazard road sections. The method and system for screening the potential traffic safety hazard road sections is a set of effective and objective scheme for managing road traffic safety and operation and improves accuracy and troubleshooting efficiency of dangerous road section troubleshooting results.
Owner:ROAD TRAFFIC SAFETY RES CENT THE MINIST OF PUBLIC SECURITY OF THE PEOPLES REPUBLIC OF CHINA

Device and method for testing influence of tunnel excavation on existing close-distance parallel tunnels

The invention discloses a device and a method for testing influence of tunnel excavation on existing close-distance parallel tunnels. The device comprises a model box, panels at two ends of the model box are replaceable, and a plurality of orifices can be processed on the panels according to the requirements of a test and respectively correspond to the positions of existing tunnel orifices and the positions of a plurality of designed newly-excavated tunnel orifices so as to simulate iron sheet pipes of the existing tunnels, polyvinyl chloride (PVC) plastic pipes of newly-excavated tunnels, a movable type loading platform frame, a loading jack, a pipe wall displacement meter for measuring pipe wall displacement, an earth surface displacement meter for measuring characters of earth surface displacement, a strain gauge for recording pipe wall strain, a static-state strain meter and a computer. The testing device can simulate influence of round-section tunnel excavation and construction on the existing close-distance parallel tunnels under different stratum conditions at different close connecting distances and evaluate earth surface sedimentation caused by parallel excavation of a plurality of tunnels beside the existing tunnels, and test data are accurate and reliable.
Owner:SHANGHAI JIAO TONG UNIV

High-risk laboratory monitoring system based on Internet of Things

The invention relates to the technical field of risky experiments, and discloses a high-risk laboratory monitoring system based on the Internet of Things. The high-risk laboratory monitoring system comprises a monitoring center server, and a camera, an experimental environment monitoring module, a high-risk experimental instrument and a laboratory infrastructure monitoring module which are connected with the monitoring center server, wherein the camera is used for transmitting real-time video information of a laboratory to the monitoring center server; the experimental environment monitoring module is used for transmitting environmental information of the laboratory to the monitoring center server in real time; the high-risk experimental instrument is used for transmitting its real-time state and /or experimental data to the monitoring center server, and receiving an instrument control command issued by the monitoring center server; and the laboratory infrastructure monitoring module is used for transmitting real-time states of infrastructures to the monitoring center server, and receiving an infrastructure control command issued by the monitoring center server, so as to control the corresponding infrastructures to complete corresponding actions. The high-risk laboratory monitoring system based on the Internet of Things realizes internet-of-things, remote and real-time monitoring and control of the risky laboratory.
Owner:CHONGQING BOAN KECHUANG TECH

Coupled-feeding reconfigurable antenna and manufacturing method

The invention discloses a coupled-feeding reconfigurable antenna and a manufacturing method. The antenna comprises a feed source, a floor board, a dielectric plate, a low-pass filter, a low-frequency radiation unit, a radio-frequency switch, a first coupling sheet, a first high-frequency radiation unit, a second coupling sheet, and a second high-frequency radiation unit. The first side surface of the dielectric plate is provided with the first coupling sheet, and a feed point is connected with the feed source. The second side surface, opposite to first side surface of the dielectric plate, of the dielectric plate is provided with the second coupling sheet, wherein the second coupling sheet and the first coupling sheet are symmetric, and are equivalent to a coupling feed capacitor. The low-frequency radiation unit is disposed on the dielectric plate or a cellphone housing, and the low-pass filter is connected in series between a second contact of the low-frequency radiation unit and the feed point. The dielectric plate between the low-pass filter and the feed point is provided with a via hole. According to the embodiment of the invention, the antenna improves the radiation efficiency and gain of an antenna system, and finally improves the working performance of the antenna system.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Quick bridge impact coefficient determination method

InactiveCN104215421AAvoid influenceNo vibrationSpecial data processing applicationsShock testingLow frequency vibrationFrequency domain
The invention discloses a quick bridge impact coefficient determination method. The quick bridge impact coefficient determination method includes the steps of firstly, recording vertical vibration speed signals of a girder on the bridge mid-span section when loaded vehicles run at different speeds; secondly, integrating the speed signals in a frequency domain after the speed signals are subjected to band-pass filtering noise-reducing processing, and subjecting the speed signals subjected to FFT (fast Fourier transformation) so as to obtain displacement time domain signals, namely a dynamic deflection curve of a bridge; thirdly, computing a maximum amplitude value ydmax of dynamic deflection according to the dynamic deflection curve obtained by integration; fourthly, determining a load arrangement mode of the loaded vehicles according to an analysis result on moving load of the girder mid-span section, and measuring a maximum static deflection value y0 of the girder mid-span section by testing; fifthly, computing bridge impact coefficients 1+mu=1+ ydmax/y0 at different vehicle speeds so as to obtain a maximum impact coefficient value finally. The quick bridge impact coefficient determination method has the advantages that measurement of the maximum dynamic deflection value ydmax and the maximum static deflection value y0 of the bridge mid-span section can be achieved by simply obtained low-frequency vibration pickups (speed sensors) and level gauges respectively, and then the impact coefficients of the bridge mid-span section at different vehicle speeds are obtained.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Continuous sinking-mode efficient 3D printing method and equipment

The invention discloses a continuous sinking-mode efficient 3D printing method and equipment. The continuous sinking-mode efficient 3D printing method comprises the following steps: by utilizing the principle that after oxygen is applied to the liquid level of resin, oxygen molecules can form an oxygen molecule concentration equilibrium point in the resin and projecting or focusing a light source at the equilibrium point and a region below the equilibrium point, curing of photosensitive resin is initiated, a printing table adhered to a cured product is driven by a motor to continuously move downwards, meanwhile, the photosensitive resin supplements the cured region with the equilibrium point, and changed light of the light source is projected onto the equilibrium point to carry out continuous curing under the control of a program, so that 3D printing is finished. In the printing process, the concentration gradient of the oxygen molecules which permeate into the resin can be controlled by regulating an input parameter of applied oxygen. The continuous sinking-mode efficient 3D printing method and the equipment can dramatically increase the forming speed of the traditional 3D printing, are suitable for large 3D printing products and are simple in mechanism, convenient to operate, high in accuracy of the printed products and excellent in performance.
Owner:陕西普立通复材科技有限公司
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