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34 results about "Retrograde motion" patented technology
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Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or nutation of the object's rotational axis. Prograde or direct motion is motion in the same direction as the primary rotates. Rotation is determined by an inertial frame of reference, such as distant fixed stars. However, retrograde and prograde can also refer to an object other than the primary if so described.
Recanalizing occluded vessels using controlled antegrade and retrograde tracking
A method and systems for treating chronic total occlusions, particularly those that are difficult to treat, is disclosed. In this approach, recanalizing the CTO is achieved using a combined antegrade and retrograde approach. The proximal end of the occlusion is penetrated using an antegrade wire, using a traditional approach. Using collateral vessels, the distal end of the occlusion is crossed in a retrograde fashion and by appropriately maneuvering each member, a continuous channel is created. Additional elements such as capture devices, dilators and injection catheters are also disclosed.
Owner:RETROVASCULAR
Crossroad traffic event automatic detection system based on multi-source information fusion
InactiveCN101751782AOvercome limitationsReal-time acquisitionDetection of traffic movementClosed circuit television systemsElevation angleInformation analysis
The invention discloses a crossroad traffic event automatic detection system based on multi-source information fusion. The invention aims at urban crossroad traffic management, establishes audio-video traffic information acquisition, traffic information analytical processing and traffic event automatic alarming three subsystems. The invention mainly comprises: designing and realizing an acquisition subsystem of multi-source traffic information (traffic audio information, traffic video information, multi-angle video information, elevation angle video information); realizing a traffic parameter automatic extractive technique based on traffic audio and traffic video; realizing a traffic event (car crash, illegal parking, jam and retrograde motion) automatic detection technique based on the multi-source information fusion; and realizing a software system for traffic event report, traffic event associated video information transmission, and traffic control center display and processing, and forming an integrated crossroad traffic event automatic detection system.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
Method and apparatus for treating acute myocardial infarction with hypothermic perfusion
InactiveUS20050004503A1Optimal myocardial salvageRapid coolingStentsBalloon catheterVenous bloodCatheter device
An apparatus and method are described for quickly inducing therapeutic hypothermia of the heart by perfusing the myocardium with hypothermic fluid in alternatingly antegrade and retrograde directions. The apparatus and method provide rapid cooling of the affected myocardium to achieve optimal myocardial salvage in a patient experiencing acute myocardial infarction. The therapeutic hypothermia system includes one or more coronary artery perfusion catheters, a coronary sinus perfusion catheter and a fluid source for delivering a hypothermically-cooled physiologically-acceptable fluid, such as saline solution, oxygenated venous blood, autologously-oxygenated arterial blood and / or an oxygenated blood substitute. The system may also include one or more guidewires, subselective catheters and / or interventional catheters introduced through a lumen in one or more of the perfusion catheters.
Owner:CARDEON
Active anti-collision early-warning method and system for ship in bridge zone
ActiveCN107886775ARealize unattendedPrevent Collision Bridge IncidentsMarine craft traffic controlRisk levelMarine navigation
The invention relates to an active anti-collision early-warning method and system for a ship in a bridge zone. The method comprises that S1) bridge-zone navigation areas are divided on the basis of anelectronic sea chart; S2) each virtual navigation-mark navigation area is provided with a retrograde motion determining virtual navigation mark close to the boundary of an adjacent navigation bridgeopening; S3) AIS information of the navigation ship in the bridge zone is collected in real time; S4) on the basis of the navigation area of the bridge zone, a collision risk level for evaluating thedriving state of the ship is obtained according to real-time coordinates and bow direction of the ship; and S5) broadcast information corresponding to the collision risk level obtained in the step S4)is emitted to the ship. Compared with the prior art, the risk in colliding with the bridge of the ship can be evaluated on the basis of the AIS information, and navigation-aided services and early-warning information are broadcast for the ship according to the different risk levels.
Owner:交通运输部东海航海保障中心福州航标处
Vehicle abnormal behavior detection and tracking method based on DSRC
InactiveCN105844904AAbnormal behavior identification is fast and accurateAccurate identificationRoad vehicles traffic controlCommunication unitAnomaly detection
The present invention discloses a vehicle abnormal behavior detection and tracking method based on DSRC. The method comprises: a road side personal communication unit is configured to obtain information from a vehicle device, a roadbed computer is configured to calculate the information to obtain the speed of the vehicle, the traffic flow of the road and the traffic density, perform speed abnormity determination through adoption of a threshold value comparison method by a abnormity detection module and determine the vehicle illegal parking and retrograde motion through a design algorithm. Through adoption of a DSRC communication technology between vehicles and roads, the vehicle abnormal behavior detection and tracking method based on DSRC provides a calculation method of microcosmic traffic volume, vehicle speed, macroscopic traffic volume, traffic flow and traffic density so as to solve the problem that the vehicle abnormal behavior is identified and tracked with low cost and accuracy in the car networking environment.
Owner:BEIHANG UNIV
A vehicle retrograde motion intelligent detection method based on tracking trajectory analysis
ActiveCN109948582AImprove reliabilityRealize multi-target trackingCharacter and pattern recognitionCorrelation filterVehicle detection
The invention discloses a vehicle retrograde motion intelligent detection method based on tracking track analysis. The method comprises the following steps: detecting a target vehicle in a video imageby utilizing a primary classifier and a secondary classifier; extracting a target vehicle area, distributing a nuclear correlation filtering tracker for the target vehicle; wherein each target vehicle is matched with one nuclear correlation filtering tracker, the nuclear correlation filtering tracker is used for obtaining a tracking area of the target vehicle, then the movement track growth direction of the target vehicle is obtained according to the tracking area and compared with the initially marked retrograde movement direction, and if the movement track growth direction is the same as the initially marked retrograde movement direction, the target vehicle retrograde movement occurs; And if not, the target vehicle does not run reversely. By means of the mode, real-time detection of vehicle retrograde running is achieved, and the problems existing in manual detection are solved; And meanwhile, the reliability of vehicle detection and recognition is improved by using the cascade classifier, and simultaneous tracking of multiple vehicle targets is realized.
Owner:HUNAN UNIV
Escalator intelligent safety monitoring method based video analysis
InactiveCN106503632AProtect personal safetyStop stampedeCharacter and pattern recognitionHuman bodyAngular point
The invention discloses an escalator intelligent safety monitoring method based video analysis. The method comprises the followings steps of firstly obtaining a real-time video image sequence in a camera installed in a monitor area; then establishing a hybrid gaussian background model, and inhibiting shadows in a video image to extract a foreground; then carrying out human body object identification of the foreground via a classifier, and calculating the angular point light stream of a human body object, so as to determine whether abnormal behaviors such as retrograde motion or falling of passengers exist or not and to timely take measures of sudden stop of an escalator and the like, thereby ensuring the personal safety of passengers on the escalator. With the method provided by the invention, the precision of human body object detection is high, the detection speed is fast, by determining abnormal behaviors of the human body object with the angular point light stream, the probability of trampling events due to retrograde motion or falling of persons is effectively prevented, and the personal safety of passengers is protected to the greatest extent.
Owner:NANJING UNIV OF SCI & TECH
Oriented monitoring system with radio-frequency signal identification function
ActiveCN104636773AMeet the needs of the applicationCo-operative working arrangementsIndividual entry/exit registersLogistics managementControl signal
The invention discloses an oriented monitoring system with a radio-frequency signal identification function. The oriented monitoring system comprises oriented passage doors, an Ethernet module, a server module, a management module and a database module. Each of the oriented passage doors is provided with an RFID (radio-frequency identification device) and RFID antennae, and radio frequency identification signals emitted by the RFID antennae cover any sides of the oriented passage doors and are used for identifying EPCs (electronic product codes) of RFID labels when people and articles with the RFID labels pass through the oriented passage doors. The Ethernet module is used for transmitting the identified EPCs of the RFID labels to the server module. The server module is used for performing data analysis and data processing on the received EPCs, judging moving directions of the people and the articles, detecting retrograde motions, hover and retention of the people and the articles and emitting sound-light alarm control signals. The management module is used for setting the moving directions of the people and the articles allowed by the oriented passage doors and displaying moving tracks of the people and the articles in real time. The data module is used for storing the moving directions of the people and the articles allowed by the oriented passage doors and moving track data of the people and the articles passing through the oriented passage doors.
Owner:GLORYVIEW TECH INC
Method for controlling illuminating lamp based on visual perception
InactiveCN102548153AElectric light circuit arrangementEnergy saving control techniquesPattern recognitionImaging analysis
The invention relates to a method for controlling an illuminating lamp based on visual perception. The method comprises the steps that: video images can be captured by a camera continuously, target characteristics and target behaviors of the video images in the camera can be automatically detected by utilizing an image analysis technology, the switching on and off of the illuminating lamp can be controlled according to automatic detection results, the target characteristics comprise target shape characteristics, target texture characteristics, face characteristics and other target local characteristics, and the target behaviors comprise area invasion, target detention, warning limit penetration, retrograde motion, crowd aggregation, article remain and article displacement.
Owner:BEIJING WISE ERA TECH
Streaming monitoring analysis pre-warming system and method specific to vehicles based on fog calculation
ActiveCN108922186AEarly warning of traffic accidentsArrangements for variable traffic instructionsDetection of traffic movementRoad trafficVehicle safety
The invention belongs to the technical field of intelligent transportation, and provides a streaming monitoring analysis pre-warming system and method specific to vehicles based on fog calculation. The streaming monitoring analysis pre-warming method comprises the steps that state data of all vehicles is collected specific to the vehicles in travelling and uploaded to a distributed message queue module on fog equipment, according to the real-time data, real-time traffic information and driver behavior models are obtained by using a big data analysis method, the situations that present driver behaviors are abnormal and whether retrograde motion of the vehicles occurs or not are discovered in time, and the traffic information and the driver behavior models are stored in a local storage module and meanwhile transmitted to a history data storage module in a cloud calculation center; in addition, the vehicle position and the driver behaviors of future period of time are forecasted, and advanced warning of traffic accidents possibly occur in the future is facilitated. According to the streaming monitoring analysis pre-warming system and method specific to the vehicles based on the fog calculation, the defects that time delay is long, load of calculation center is heavy, network flow is large and network congestion is prone to occurring of a traditional vehicle safety monitoring system are overcome, and the safety of road traffic is improved.
Owner:DALIAN UNIV OF TECH
Puncture sheath with bidirectional puncture function
ActiveCN105726098APrecisely control the direction of progressIncrease bend radiusCannulasSurgical needlesInterventional therapyGuide wires
The invention discloses a puncture sheath with a bidirectional puncture function. The puncture sheath comprises a sheath canal assembly and a sheath core assembly; the sheath canal assembly comprises a sheath canal and a sheath canal accessory, a through sheath canal inner cavity is formed in the sheath canal, the sheath canal accessory is connected to the rear portion of the sheath canal, and the sheath core assembly is inserted into the sheath canal inner cavity from the sheath canal accessory and axially moves along the sheath canal inner cavity; the sheath core assembly comprises at least one bent sheath core assembly body, each bent sheath core assembly body comprises a linear sheath core pipe and a bent sheath core pipe with a shape memory function, the near end of the bent sheath core pipe is connected with the linear sheath core pipe, and the far end of the bent sheath core pipe is connected with a sheath core head; in a free state, the bent sheath core pipe bends toward the side of the linear sheath core pipe and is constrained in a straight state in the sheath canal inner cavity. The advancing direction of a guide wire can be controlled accurately, retrograde and prograde motion admission passage operations can be completed at the same puncture point, particularly in interventional therapy of bilateral lower limb artery lesions, secondary puncture is avoided in the same operation, the guide wire can be smoothly conveyed to lesion regions on the same side or the opposite sides, and interventional therapy of bilateral limbs at the same side is completed at the same time.
Owner:HANGZHOU WEIQIANG MEDICAL TECH CO LTD
Methods and apparatus for initiating scoring
The invention relates to methods and apparatus for initiating scoring. Methods and apparatus are provided for forming an initiation flaw (111) in the surface (114) of a glass sheet or glass ribbon (13). The initiation flaw (111) is used in connection with a laser light beam (121) and a cooling area produced by a cooling nozzle (119) to from a score line (115) in the surface (114) of the sheet or ribbon (13). The initiation flaw (111) is formed by a mechanical scoring head (20) which is carried by moving carriage (14) and which undergoes retrograde motion (19) relative to the carriage (14) so as to increase the time available for forming the initiation flaw (111).
Owner:CORNING INC
Retrograde-motion preventing system for vehicle
InactiveCN102142200AInstruments for road network navigationAnti-collision systemsParking areaDriver/operator
A retrograde-motion preventing system for vehicles is provided which can rapidly detect retrograde motion of a vehicle and alert the driver even when a database with completely collected information of retrogression-forbidden rodes in a parking area is not loaded in a vehicle navigation system for vehicles. A one-way attribute is provided to an exit road which is in the parking area and is connected to an external road. With the information, the retrograde motion of a vehicle on the exit road is detected and the driver is alerted. Additionally, in the invention, with the one-way attribute, whether an action which can result in retrograde motion is present in the parking area is pre-detected before the vehicle approaches the exit road, and if retrograde motion is a result according to the estimation, an alert is provided. Therefore, even if the one-way attribute in the parking area has not been completely processed, a retrograde motion alert can be provided rapidly.
Owner:DENSO CORP
Drainage pipeline sediment on-well sampling method
The invention provides a drainage pipeline sediment on-well sampling method. The method comprises the following steps: taking a connecting rope to connect a floating plate at a tail end, and then feeding the floating plate into a first inspection well by handholding the connecting rope, enabling the floating plate to enter a drainage pipeline communicating with the first inspection well by utilizing the underground waterflow; when the floating plate enters a second inspection well located at a downstream of the drainage pipeline through the water flow in the drainage pipeline, hooking up the floating plate by using a hook, and connecting a sampler at the tail end of a traction rope; arranging a lifting device at a well opening of the first inspection well; pulling the traction rope, and enabling the traction rope to slide along a fixed pulley, thereby enabling a sampler to perform retrograde motion along the drainage pipeline water flow, and enabling the deposit to enter a sampler; andpulling out the sampler, and finishing the sampling. The sampling personnel is unnecessary to go down, the connection of the sampler and the lifting device can be realized on the ground, and the sampling is accomplished.
Owner:TIANJIN UNIV
Staple refill with backward movement preventing member
A staple refill which can be stored in a refill storing section in such a manner that the leading one of the sheet-like joined staples wound in roll form is on the upper side and which is adapted to lessen the load on a feeding mechanism for feeding the leading one of the sheet of joined staples in a stapler main body. The staple refill is removably attached to a cartridge installed in a stapler main body. A refill includes a storing section for storing a sheet of joined staples wound in roll form, a discharge port for discharging the sheet of joined staples, and a lead-out passage for leading out the leading part of the sheet of joined staples into the discharge port. The lead-out passage is upwardly bent from the discharge port toward the interior of the storing section, so that the leading part positioned on the upper side of the sheet of joined staples is lead out to the discharge port. The lead-out passage is provided with a retrograde motion preventive member which prevents movement of the sheet of joined staples to the storing section.
Owner:MAX CO LTD
Corn retrograde motion ear-picking principle and device
The invention relates to a maize picker principle and a device arranged on a cropper, and is an agricultural machine. Compared with the current stripping by means of squeezing and rubbing forcibly with a principle of roll rotating and rubbing, the invention is characterized in that when the tip part of a maize plant turns towards a stripper intercept rod and operates reversely from the rod, the corn ear can be toggled from the tip downwardly and steered by the stripper intercept rod, leading the ear to be separated from the plant in the natural direction. The invention has the advantages that the ear can not be impacted and any position of the ear can not be rubbed to cause an injury in the picking process; the picking efficiency can be greatly improved; the energy consumption is lowered in a large scale.
Owner:于政道
Battery car retrograde motion detection system and method
InactiveCN110415272AImplement automatic detectionImprove recognition accuracyImage enhancementImage analysisSimulationRetrograde motion
The invention relates to a battery car retrograde motion detection system and method, and the system comprises an image obtaining module which is used for collecting a video; a battery car detection module which is used for identifying the battery car from the acquired video; a target tracking module which is used for tracking the identified battery car; a motion trail analysis module which is used for acquiring a motion trail of the battery car; and a retrograde motion detection module which is used for judging whether the battery car has a retrograde motion behavior or not according to the obtained moving track of the battery car. Automatic detection of battery car retrograde motion is realized, and a foundation is laid for controlling battery car retrograde motion.
Owner:DONGHUA UNIV
Permanent magnet synchronous motor power line wiring phase sequence detection method and detection system
ActiveCN108693436AImprove securityImprove efficiencyElectric winding testingPhase sequence/synchronism indicationPermanent magnet synchronous motorSequence determination
The invention relates to a permanent magnet synchronous motor power line wiring phase sequence detection method and a detection system. The method is characterized by firstly, detecting a motor rotorposition and a relative position between the motor power lines formed through connecting the motor rotor and any two phases of a controller power line; and then, according to actual detected correlation data, using the corresponding relation between the data and a wiring phase sequence to obtain whether a motor power line wiring phase sequence is correct. In the detection method, only a few parameters need to be detected; according to a corresponding relation, phase sequence determination can be performed; the process of the detection method is simple and efficiency is high; and under a motorstatic state, a specific phase sequence error mode can be identified. If a permanent magnet synchronous motor on a vehicle is detected, detection can be performed under the stop state of the vehicle so that the sudden stop or sudden retrograde motion condition of the vehicle during the detection process is not generated, the personal safety of detection personnel and surrounding personnel can notbe harmed, and the safety and the efficiency of motor phase sequence detection are increased.
Owner:ZHENGZHOU YUTONG BUS CO LTD
One-way speed bump
InactiveCN103821095ASmooth oppressionGuaranteed one-way trafficTraffic signalsRoad signsSpeed bumpOpen innovation
The invention relates to a one-way speed bump. The one-way speed bump is characterized in that the one-way speed bump for controlling a vehicle to perform one-way driving deceleration consists of a speed bump (2), a spring (3), a front fixed plate (4), a connecting shaft (5), a front fixing nail (6) and a rear fixing nail (7), the spring (3) is arranged in the arc-shaped rest front part, with a raised middle, of the speed bump (2) so that the bottom surface of the arc-shaped rest front part, with the raised middle, of the speed bump (2) leaves the ground (1), warps up and is separated from a triangle part under the condition that the raised arc front part is not pressed by external force, and a ridge for preventing the vehicle from making retrograde motion is formed; the front fixed plate (4) is connected with the arc-shaped front part, with the raised middle, of the speed bump (2) by the connecting shaft (5). The one-way speed bump creates an open innovation concept, can be widely applied to one-way streets and solve the problem of the retrograde motion of the vehicle in a one-way street due to the fact that the design of the traditional speed bump is not quite suitable for the one-way street.
Owner:饶莉
Compound procaine benzylpenicillin injectant for cow breasts (during dry period)
InactiveCN105726462AAvoid enteringDisruption of lactationAntibacterial agentsAerosol deliverySuspending AgentsBioavailability
The invention relates to a formula of a compound procaine benzylpenicillin injectant for cow breasts (during a dry period), and a manufacturing method of the injectant. The injectant comprises a suspending agent, a thickening agent, and a solid dispersion, and is manufactured into a white or white-like ointment through special process. The injectant is simple to manufacture, stable in content, easy to inject, and soft in matrix. The injectant is an ointment, and compared with an injection, the injectant has advantages, such as high bioavailability, slow release, and long action time, can be sealed at nipple holes after being filled into milk chambers through milk ducts, and can prevent bacteria from intruding into the milk chambers by virtue of retrograde motion through the nipples.
Owner:RINGPU TIANJIN BIOLOGICAL PHARMA
A directional monitoring system with radio frequency signal identification
ActiveCN104636773BMeet the needs of the applicationCo-operative working arrangementsIndividual entry/exit registersControl signalVIT signals
The invention discloses an oriented monitoring system with a radio-frequency signal identification function. The oriented monitoring system comprises oriented passage doors, an Ethernet module, a server module, a management module and a database module. Each of the oriented passage doors is provided with an RFID (radio-frequency identification device) and RFID antennae, and radio frequency identification signals emitted by the RFID antennae cover any sides of the oriented passage doors and are used for identifying EPCs (electronic product codes) of RFID labels when people and articles with the RFID labels pass through the oriented passage doors. The Ethernet module is used for transmitting the identified EPCs of the RFID labels to the server module. The server module is used for performing data analysis and data processing on the received EPCs, judging moving directions of the people and the articles, detecting retrograde motions, hover and retention of the people and the articles and emitting sound-light alarm control signals. The management module is used for setting the moving directions of the people and the articles allowed by the oriented passage doors and displaying moving tracks of the people and the articles in real time. The data module is used for storing the moving directions of the people and the articles allowed by the oriented passage doors and moving track data of the people and the articles passing through the oriented passage doors.
Owner:GLORYVIEW TECH INC
Testing method of metronidazole content in compound ketoconazole ointment
InactiveCN107957462AEliminate distractionsAccurate measurementComponent separationKetoconazoleChromatography column
The invention provides a testing method of the metronidazole content in compound ketoconazole ointment. According to the method, by adopting a liquid-phase chromatographic method for testing, under the dissociation function of chromatographic columns, the interference and retrograde motion of related substances, impurities, other auxiliary materials and other medicinal components are avoided, andthe related substances, impurities, other auxiliary materials and other medicinal components can be effectively dissociated and discharged out so that the tested metronidazole content in the compoundketoconazole ointment can be more truly and accurately embodied.
Owner:FOSHAN NANHAI EASTERN ALONG PHARMA CO LTD +1
Intelligent digital monitor
InactiveCN105898247ARealize real-time automatic monitoringImprove monitoringTelevision system detailsRoad vehicles traffic controlVideo storageVideo transmission
The invention provides an intelligent digital monitor. The intelligent digital monitor is provided with a video acquisition module, a red light running identification sub-module, a retrograde motion identification sub-module, a disordered parking identification sub-module and an optical fiber sender; the intelligent digital monitor is used for acquiring illegal video information of a road, carrying out corresponding identification and sending an identification result to an outer center control end through the optical fiber sender, so that real-time automatic monitoring of the road is realized, a worker can grasp road information through the center control end and the monitoring intensity is improved; a video storage module is used for storing all video information and transmitting videos corresponding to identification results to the optical fiber sender under the control of a controller module; and the optical fiber sender sends the identification results and corresponding illegal videos to the outer center control end.
Owner:GUILIN JINYIXING TECH DEV CO LTD
Wind-driven retrograde motion driving mechanism
The invention provides a wind-driven retrograde motion driving mechanism. The driving mechanism comprises fan blades, a fan shaft, a transmission device, a speed reducer and an executing mechanism; the fan blades are fixedly connected to the fan shaft; the fan shaft is connected with the transmission device and is used for driving the transmission device to apply force to the speed reducer; a rotating shaft of the speed reducer is connected with the executing mechanism; and the power source of the driving mechanism is natural wind or artificial wind. The wind-driven retrograde motion driving mechanism related to the invention can also realize equipment running of the driving mechanism in a room as long as a wind source is provided.
Owner:徐明秋
A stream monitoring and analysis early warning system and method for vehicles based on fog computing
ActiveCN108922186BEarly warning of traffic accidentsArrangements for variable traffic instructionsDetection of traffic movementTime delaysRoad traffic
Owner:DALIAN UNIV OF TECH
Methods and apparatus for initiating scoring
Methods and apparatus are provided for forming an initiation flaw (111) in the surface (114) of a glass sheet or glass ribbon (13). The initiation flaw (111) is used in connection with a laser light beam (121) and a cooling area produced by a cooling nozzle (119) to from a score line (115) in the surface (114) of the sheet or ribbon (13). The initiation flaw (111) is formed by a mechanical scoring head (20) which is carried by moving carriage (14) and which undergoes retrograde motion (19) relative to the carriage (14) so as to increase the time available for forming the initiation flaw (111).
Owner:CORNING INC
One-way speed bump
InactiveCN103821095BSmooth oppressionGuaranteed one-way trafficTraffic signalsRoad signsSpeed bumpOpen innovation
Owner:饶莉
A dsrc-based abnormal vehicle behavior detection and tracking method
InactiveCN105844904BAbnormal behavior identification is fast and accurateAccurate identificationRoad vehicles traffic controlVehicle behaviorCommunication unit
The present invention discloses a vehicle abnormal behavior detection and tracking method based on DSRC. The method comprises: a road side personal communication unit is configured to obtain information from a vehicle device, a roadbed computer is configured to calculate the information to obtain the speed of the vehicle, the traffic flow of the road and the traffic density, perform speed abnormity determination through adoption of a threshold value comparison method by a abnormity detection module and determine the vehicle illegal parking and retrograde motion through a design algorithm. Through adoption of a DSRC communication technology between vehicles and roads, the vehicle abnormal behavior detection and tracking method based on DSRC provides a calculation method of microcosmic traffic volume, vehicle speed, macroscopic traffic volume, traffic flow and traffic density so as to solve the problem that the vehicle abnormal behavior is identified and tracked with low cost and accuracy in the car networking environment.
Owner:BEIHANG UNIV
Scale cleaner for slurry pump pipes for building construction
InactiveCN106256448BAchieve retrogradeImprove cleanlinessHollow article cleaningUniversal jointEngineering
The invention discloses a slurry-feeding-pump pipe scale removing device for building construction. The slurry-feeding-pump pipe scale removing device comprises a front cutter head, a front blade, a back cutter head and a back blade. The front cutter head is connected with the front blade through a front bolt and a front nut, and the back cutter head is connected with the back blade through a back bolt and a back nut. A front cutter head partition plate and a back cutter head partition plate are arranged on the front cutter head and the back cutter head respectively, and the front cutter head partition plate is connected with the back cutter head partition plate through a universal joint. The front bolt and the front nut are loosely connected with the front cutter head and the front blade. The back bolt and the back nut are loosely connected with the back cutter head and the back blade. The diameter of the front cutter head is larger than the diameter of the back cutter head. The bending range of the back blade is larger than the bending range of the front blade. The blades of the pipe physical scale removing device can permit circular motion in a pipeline, and the scale removing effect is good; retrograde motion of the scale removing device can be achieved when plugging is met, and convenience and safety are achieved.
Owner:SHAANXI SCI TECH UNIV
A Method for Determining Semi-major Axis of Equatorial Orbit for Timed Return of Subsatellite Point
ActiveCN111141278BImprove time resolutionAchieve hourly revisitingNavigation by astronomical meansComplex mathematical operationsSingle starLow latitude
Owner:AEROSPACE DONGFANGHONG SATELLITE
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