30results about How to "Effective evasion" patented technology

The invention discloses an instantaneous impact point based unmanned aerial vehicle non-collaborative real-time obstacle avoidance method. The instantaneous impact point based unmanned aerial vehicle non-collaborative real-time obstacle avoidance method comprises the steps of 1 performing obstacle detection, namely obtaining a relative motion state of an obstacle, 2 performing obstacle motion estimation, namely obtaining machine state information based on satellite navigation information and calculating a motion state of an inertial space obstacle, 3 performing impact conflict detection, namely judging whether obstacle impact occurs or not, 4 performing obstacle avoidance decision making, namely making an obstacle avoidance decision based on a detection result in the step 3, 5 performing obstacle avoidance route re-planning based on a quick expanding random tree algorithm considering an instantaneous impact point, namely introducing route evaluation heuristic information based on the instantaneous impact point and achieving obstacle avoidance route re-planning. The instantaneous impact point based unmanned aerial vehicle non-collaborative real-time obstacle avoidance method has the advantages of being simple in principle, easy to achieve, capable of improving unmanned aerial vehicle safety and the like.

The invention discloses an L-shaped retaining wall structure of a cross-over type special-shaped counterfort. The structure comprises a wall body structure and a pile foundation, wherein the wall body structure comprises a wall panel, and a wall toe slab and a wall heel slab which are vertical to the wall panel, the wall toe slab is concave, counterforts are vertically arranged on the slab planes on the two sides of the wall toe slab, and wall top plates are arranged on the two counterforts. The retaining wall disclosed by the invention is designed to be in a counterfort structure; each wall toe plate is designed to be concave; the whole structure is one-time poured to form a whole body; not only can soil be retained, but also a man hole can be stridden; the influence of underground pipelines on the construction of a new pipeline can be reasonably avoided, not only can the construction of a newly-built railroad bed and running safety be ensured, but also the safety of the underground pipelines is ensured, as well as the problems of complex newly-built railways and underground pipelines, strained site space layout and construction safety are solved; and the retaining wall structure is safe and reliable, can be applied to a district with a complex site and a limited district, and can be used for solving the problems of the influences caused by strained lands, complex underground pipeline distribution and the like.

The present invention is suitable for the unmanned aerial vehicle technology field, and provides an unmanned aerial vehicle height control method and system. A plurality of narrow beam single point measurement sensors are employed to perform distance measurement, and measurement results of a plurality of sensors are subjected to weight processing to allow the measurement results to be more accurate. In the calculation, the unmanned aerial vehicle height control method and system fuse the posture data of an unmanned aerial vehicle and perform dynamic posture measurement compensation processing of the measurement results. Compared to the prior art, the unmanned aerial vehicle can realize rapid following of the topography, keep the height and effectively avoid barriers above the unmanned aerial vehicle. The cost is low, the power consumption is small, the application scenes are various, flight effects are good, and the product viscosity is improved.

The invention discloses an Android APP-based automatic exploration testing method and system. The method includes: analyzing a to-be-tested APP, acquiring attribute information of the to-be-tested APP, and storing the same; formulating a corresponding exploration testing rule according to the attribute information; defining anomalies and formulating recovery mechanisms after anomaly occurrence according to the attribute information; executing an unattended exploratory testing; recursively processing generated operation instructions; if a constraint condition is triggered, stopping downward testing, and jumping to same-level testing or returning to a previous step; if the APP anomaly is triggered, executing the recovery mechanism, recording the anomaly, and continuing to execute exploratorytesting; and recording a testing process and result in a form of a file or an image in a process of executing exploratory testing. According to the method, efficiency of APP testing is effectively improved, and operations which are unnecessary to occur in testing are avoided.

The invention discloses a method, a device and equipment for assisting a physician in writing a prescription based on big data, and a storage medium. The method comprises the following steps: receiving a prescription writing instruction triggered by the physician and obtaining identity information and current medical information of the patient according to the prescription writing instruction; according to the identity information, obtaining first historical medical information and a first historical prescription corresponding to the first historical medical information from a prescription sharing server; according to the first historical medical information, the first historical prescription and the current medical information, determining a first target reference prescription; recommending the first target reference prescription to the physician to assist the physician in writing the prescription for the patient aiming at the current medical information. Through the above mode, the physician can be assisted in writing the prescription suitable for the patient, so that the rationality of the prescription is ensured.

The invention relates to a method and apparatus for avoiding an obstacle automatically, wherein the method and apparatus can be applied to mobile equipment like a robot, an automatic driving device or an unmanned aerial vehicle. The apparatus comprises a first scanning ranging module, a second scanning ranging module, and a calculation module. The first scanning ranging module arranged at the top of a mobile device and the second scanning ranging module arranged at the top of the mobile device are used for scanning an obstacle around the mobile device to obtain feature information of the relative position and dimension of the obstacle. The calculation module obtains accurate obstacle features by combining obstacle features fed back by the two scanning ranging modules. Therefore, identification of the obstacle by the mobile device is realized; and thus the obstacle can be avoided effectively.

The intelligent obstacle averter for electric bicycle includes one main speed controller, one microprocessor, one obstacle detector and one speed sensor. The microprocessor includes one obstacle detecting module for receiving signal from the obstacle detector and judging to have obstacle in the running direction, one distance measuring module for calculating the distance to the obstacle, one speed detecting module for detecting the signal from the speed sensor; one safety speed regulating module for obtaining the safety speed based on the distance and safety speed and sending command to the main speed controller for regulating to the safety speed in case of over high speed. The present invention has high safety and capacity of eluding obstacle.

The invention discloses a radio-frequency spectrum monitoring device which comprises a monitoring antenna, a monitoring receiver and a spectral analysis device. The radio-frequency spectrum monitoring device further comprises a data flow divider, a signal amplifier and a signal filter, wherein the data flow divider is arranged between the monitoring receiver and the spectral analysis device, the signal amplifier is arranged between the monitoring antenna and the monitoring receiver and the signal filter is arranged between the signal amplifier and the monitoring receiver and used for filtering amplified spectral data. The spectral analysis device analyzes the spectral data received by the monitoring receiver according to the preset analysis bandwidth and the center frequency, and therefore the signal scanning spectral range is obtained. According to the scanning spectral range and a preset threshold value, whether a signal frequency point exceeds the threshold value or not is determined; when the signal frequency point exceeds the threshold value, it is determined that interference is caused, and therefore the frequency band where the frequency point is located is removed according to the set interference removal bandwidth; when the signal frequency point is within the threshold value range, the frequency band meeting the requirement is obtained according to the set frequency bandwidth.

The invention discloses a prediction method for residual life of a spinning frame, which comprises the following steps of: extracting key parameters influencing equipment degradation by analyzing real-time monitoring data of the spinning frame, and constructing a degradation indication quantity of the spinning frame by utilizing a weighted principal component analysis method; and then establishinga degradation model based on the Wiener process by utilizing the constructed degradation indication quantity, and predicting the remaining service life of the spinning frame. The service life of thespinning frame is predicted, and a new method is provided for better managing the service life and health of the spinning frame.

The invention relates to a bush-type pile shoe jetting system for a self-elevating drilling platform. The bush-type pile shoe jetting system comprises at least two bundling main modules. Each bundling main module comprises a bundling main, a plurality of indefinite branch pipes and a plurality of nozzles; the bundling main is arranged on a worktable above a pile shoe, one side of the bundling main is connected with a main jetting pipe extending to the top end of a pile leg, bottom branches of the bundling main are connected with the indefinite branch pipes, and the branch pipes directly penetrate or are bundled to penetrate the upper surface of the pile shoe, then are bent smoothly in the pile shoe, and are further connected with the nozzles arranged on the lower surface of the pile shoe. With the bush-type pile shoe jetting system, the system failure caused by blocking of the branch pipes in application of other pile shoe jetting systems can be overcome effectively, smoothness of the pile shoe jetting system is facilitated, and pile jetting and pulling effects are improved.

The invention discloses tracheal intubation equipment for a patient with a difficult airway. The equipment comprises a cannula, a detection head, an air sac, an auxiliary trachea and an inflatable trachea; the detection head is placed in the cannula, overlaps with a stop block on the inner wall of the cannula, and is connected to an imaging device outside the cannula; the air sac sleeves the outerwall of the cannula; the auxiliary trachea is arranged in the side wall of the cannula, one end of the auxiliary trachea penetrates the end of the cannula, and the other end is connected to a supplydevice; and the inflatable trachea is arranged in the side wall of the cannula, one end of the inflatable trachea enters the air sac, and the other end is connected to an air supply device. Accordingto the equipment, a detection signal is sent to the patient trachea through the detection head, imaging processing is performed on the received reflected signal through the imaging device, and the situation in the patient trachea is displayed by using an image, so that a medical worker can effectively evade clumped neoplasms in the patient trachea during intubation, the cannula can be convenientlyinserted, and the situation that the trachea is damaged can be effectively avoided.

The invention discloses a ship type underground sewage pipeline detection robot, which comprises a ship body, a communication interface quick disassembling box, a front end, an obstacle avoidance radar, a rear end, a propeller, a transparent cover, a collection protection cavity, a webcam and three groups of high-definition cameras, wherein the communication interface quick disassembling box is arranged in the ship container of the ship body; the front end is arranged on the communication interface quick disassembling box; the obstacle avoidance radar is used for avoiding an obstacle; the rearend is arranged on the communication interface quick disassembling box; the propeller is used for driving the ship body to proceed; the transparent cover is buckled on the communication interface quick disassembling box; the collection protection cavity jointly consists of the transparent cover and the communication interface quick disassembling box; the webcam is fixed on the communication interface quick disassembling box, is arranged in the collection protection cavity and carries out full-angle rotation; and three groups of high-definition cameras are evenly distributed on the communication interface quick disassembling box along a direction vertical to a ship body proceeding direction, are used for shooting the image of the inner wall of the underground sewage pipeline and are arranged in the collection protection cavity. Through the above scheme, the robot has the advantages that a structure is simple, detection is proper, the obstacle is effectively avoided, cable protection isproper and the like.

The invention provides a walking system for a restaurant service robot. The walking system includes a robot, a base plate, a driving positioning system, wherein the robot is provided with a single-chip microcomputer controller. The base plate is an electromagnetic induction grid plate, and the driving positioning system comprises a tracking sensor and a positioning sensor which are arranged on therobot. A grid point of the electromagnetic induction grid plate is a base plate induction node, a pressure sensor and a resistance tracking sensor which provide planned walking information for the single-chip microcomputer controller are arranged at the position of the induction node, the single-chip microcomputer controller receives signals of the pressure sensor and the resistance tracking sensor and plans a walking track for the robot according to feedback signals of the tracking sensor and the positioning sensor or replans a walking track when the resistance occurs. The robot is providedwith a voice prompter and an infrared detector. The walking track is flexible, and the infrared detector and the pressure sensor can detect obstacles on a walking path timely and perform self-adjustment timely, the obstacles are avoided, and an optimal self-walking track is automatically planned.

The invention provides an aluminum rod welding device, and relates to the technical field of welding. The aluminum rod welding device includes a working table, a clamping mechanism and a welding mechanism, the working table is provided with a rotatable base, the base rotates from a transverse horizontal state to a longitudinal vertical state, the clamping mechanism includes a first clamping pieceand a second clamping piece which are successively arranged in the horizontal direction of the base, a to-be-welded aluminum rod is clamped and fixed to the first clamping piece in the horizontal direction, a welding block to be welded to the aluminum rod is clamped and fixed to the second clamping piece, and the welding mechanism includes a high-frequency induction welder and an induction heater.The working table is provided with the rotatable base, when the base is in a horizontally and transversely placed state, feeding and discharging are conducted, thus a to-be-welded area corresponds tothe welding mechanism, after welding, the base rotates to the initial transverse horizontal state and then discharging is conducted, operation is easy and convenient, both time and labor are saved, automated mass welding work is facilitated, and high-efficiency and normal operation of the welding work is ensured. The invention further provides an aluminum rod welding method.

The invention provides an electric power foundation pit operator positioning management system based on radio frequency identification, and belongs to the technical field of safety management. The electric power foundation pit operator positioning management system based on radio frequency identification comprises an earth surface monitoring host unit, and the earth surface monitoring host unit comprises a far-end computer, a transmission interface arranged on the far-end computer, and a transmission unit connected with the transmission interface. The transmission unit is connected with data information acquisition nodes arranged at different elevations in a foundation pit, each data information acquisition node comprises a reader and a gas detector, and the reader is connected with an active RFID electronic tag in a wireless transmission mode. A source RFID electronic tag, a reader and a data processing end are combined, a comprehensive data management system with alarm, forbidden zone management, overtime alarm and log functions is established on the basis of optimizing a communication protocol and a transmission mode, and functional integration of tracking, positioning, attendance checking and two-way communication is realized.

The invention relates to a risk assessment method of teeth coloring, in particular to a risk assessment method of food, medicines, oral care supplies and the like for human dental coloring. The risk assessment method of teeth coloring comprises the following steps that step 1, laboratory models of mouth entrance products people used such as the food, the medicines and the oral care supplies are established; step 2, a baseline test of experimental teeth samples is carried out, and L values of all the untreated experimental teeth samples are measured by a colorimeter; step 3, the experimental teeth samples are placed in the models for many times treatments, during the space between each treatment, and the experimental teeth samples are placed in artificial saliva and put into a 37 DEG C constant temperature and humidity box; and step 4, the L values of all the experimental teeth samples treated by the step 3 are measured by the colorimeter, data analysis is carried out on the L values ofthe experimental teeth samples treated before and after, and the risk assessment is carried out on teeth coloring. According to the application scheme, the teeth dyeing risk of the mouth entrance products such as the food, the medicines and the oral care products can be can be effectively assessed.

The invention discloses an L-shaped retaining wall structure of a cross-over type special-shaped counterfort. The structure comprises a wall body structure and a pile foundation, wherein the wall body structure comprises a wall panel, and a wall toe slab and a wall heel slab which are vertical to the wall panel, the wall toe slab is concave, counterforts are vertically arranged on the slab planes on the two sides of the wall toe slab, and wall top plates are arranged on the two counterforts. The retaining wall disclosed by the invention is designed to be in a counterfort structure; each wall toe plate is designed to be concave; the whole structure is one-time poured to form a whole body; not only can soil be retained, but also a man hole can be stridden; the influence of underground pipelines on the construction of a new pipeline can be reasonably avoided, not only can the construction of a newly-built railroad bed and running safety be ensured, but also the safety of the underground pipelines is ensured, as well as the problems of complex newly-built railways and underground pipelines, strained site space layout and construction safety are solved; and the retaining wall structure is safe and reliable, can be applied to a district with a complex site and a limited district, and can be used for solving the problems of the influences caused by strained lands, complex underground pipeline distribution and the like.

The invention discloses a four-direction walking backpack type roller vehicle. The four-direction walking backpack type roller vehicle comprises a vehicle frame chassis, a roller assembly is installed on the upper surface of the vehicle frame chassis, a plurality of sets of forward and reverse rotation motors matched with the roller assembly for transmission are arranged in the vehicle frame chassis, a driving swing arm floating mechanism is installed in the vehicle frame chassis in a matched mode, the two ends of the driving swing arm floating mechanism are connected with the vehicle frame chassis through spring installation assemblies, a driving motor assembly A is installed on the lower surface of the vehicle frame chassis, a driving motor assembly B which is opposite to the driving motor assembly A is installed on the lower surface of one end of the driving swing arm floating mechanism, the driving motor assembly A and the driving motor assembly B are both provided with driving wheel assemblies in a matched mode, and universal wheels matched with the two driving wheel assemblies are installed on the lower surface of the vehicle frame chassis. According to the four-direction walking backpack type roller vehicle, the dual-drive motor assembly can work, four-direction steering walking is provided for the vehicle, obstacles can be effectively avoided, collision hazards can be effectively reduced, guiding can be realized, and the phenomenon of vehicle body slipping can be effectively avoided.

The invention discloses an energy self-supply device for collection and purification of pelagic seawater. The device comprises a water storage traveling mechanism, a pressure-resistant solar power generation driving mechanism, a water quality intelligent detection filtering mechanism, two six-mouth water-pumping mechanisms and two arc-shaped protection mechanisms, wherein the water storage traveling mechanism comprises an electric energy storage block, a seawater storage tank, an underwater propeller and four clamping claw assemblies, the pressure-resistant solar power generation driving mechanism comprises a plurality of solar cell panels, a cell panel steering assembly and an electric power output component, and the water quality intelligent detection filtering mechanism includes a waterquality detecting mechanism and two water quality composite double-layer filtering mechanisms; and each water quality composite double-layer filtering mechanism includes an AI intelligent engine component, a first-stage rotator, a first-stage water quality filter net, a second-stage rotator and a second-stage water quality filter net. Not only can automatic collection and purification of the seawater be achieved, but also the water quality of a sea area can be evaluated and determined, so that effective first-hand data for marine protection and detection is provided.

The invention discloses a non-cooperative real-time obstacle avoidance method for UAVs based on instantaneous collision points. The steps are: (1) obstacle detection: obtaining the relative motion state of the obstacle; (2) obstacle motion estimation: based on satellite navigation information Obtain the state information of the machine and calculate the motion state of the inertial space obstacle; (3) Collision detection: judge whether it will collide with the obstacle; (4) Obstacle avoidance decision: based on the detection result of step (3), make an obstacle avoidance Decision-making; (5) Obstacle avoidance route replanning based on the rapid expansion random tree algorithm considering instantaneous collision points: based on instantaneous collision points, route evaluation heuristic information is introduced to realize obstacle avoidance route replanning. The invention has the advantages of simple principle, easy realization, and ability to improve the safety of the drone.

The invention discloses an anti-theft and anti-loss method and system. The method comprises the following steps: carrying out behavior recognition on pedestrians entering a first area; under the condition that the pedestrian is recognized to have the theft and loss behavior, extracting the features of the pedestrian to obtain a first character feature; extracting features of pedestrians entering the second area to obtain second character features; and outputting alarm information under the condition that the second character feature is matched with the first character feature. According to the method, the problem of theft and loss can be effectively avoided, the workload and omission of workers are greatly reduced, and the method is low in cost, feasible and easy to land.

Belonging to the technical field of flight, the invention relates to an optimal design method for reentry trajectory in the radioactive prohibited area comprising the steps of S1, setting up aircraft three-degree freedom motion model, flight process constraint model and flight trajectory terminal constraint model; S2, constructing radioactive prohibited area model (img file='DDA0001082531380000011.TIF' wi='350' he='105' / ), wherein, Rk refers to threat coefficient, C refers to ratio coefficient, K / N refers to radar signal-noise ratio, and Rd refers to radar ranging coverage; threats of any point in the radioactive prohibited area in unit time are quantized to describe degree of threat in the radioactive prohibited area; S3, deeming integral of threat coefficient of the radioactive prohibited area model as property indicator function and aircraft as control object to construct optimal control problem; S4, solving the optimal control problem in S3 by Guass pseudo-spectral method to draw the optimal flight trajectory of aircraft to break through the radioactive prohibited area. The optimal design method for reentry trajectory in the radioactive prohibited area enhances capacity of strategic delivery and breakthrough of hypersonic speed aircraft and facilitates aircraft to break through radar detection and tracking.

The invention discloses a non-contact rapid detection system and method for fine Raman spectrums of substances. The system comprises a high-spectral resolution spatial heterodyne spectrometer for measurement and a laser; a tested object is arranged between the spaced high-spectral resolution spatial heterodyne spectrometer and laser; and the high-spectral resolution spatial heterodyne spectrometeris externally connected with a computer terminal. The method comprises the following steps of 1) simulating a spectrum; 2) determining the spatial heterodyne spectrometer; 3) determining parameters of the laser; and 4) carrying out detection. The system is low in cost and easy to realize. The method does not need to treat samples and is suitable for detecting substances which are not easy to contact and analyzing and detecting chemical drugs.

An intelligent obstacle avoidance device for an electric scooter, including a speed master controller for controlling the speed of the scooter, the intelligent obstacle avoidance device also includes a microprocessor, an obstacle detector for covering the projection surface of the vehicle's driving direction, a speed Sensor, described obstacle detector is installed in the front and rear of scooter, microprocessor includes obstacle detection module, is used for receiving the signal of obstacle detector, judges whether there is obstacle in driving direction; Distance measurement module, uses After judging that there is an obstacle, calculate the distance between the obstacle and the scooter body according to the signal of the detector; the speed detection module is used to receive the signal of the speed sensor; the safety speed adjustment module is used to calculate the distance according to the distance The safe speed is obtained from the table corresponding to the safe speed. If the current speed is greater than the safe speed, an instruction to adjust to the safe speed is sent to the main speed controller. The invention has high safety and can effectively avoid obstacles.

The present invention is suitable for the unmanned aerial vehicle technology field, and provides an unmanned aerial vehicle height control method and system. A plurality of narrow beam single point measurement sensors are employed to perform distance measurement, and measurement results of a plurality of sensors are subjected to weight processing to allow the measurement results to be more accurate. In the calculation, the unmanned aerial vehicle height control method and system fuse the posture data of an unmanned aerial vehicle and perform dynamic posture measurement compensation processing of the measurement results. Compared to the prior art, the unmanned aerial vehicle can realize rapid following of the topography, keep the height and effectively avoid barriers above the unmanned aerial vehicle. The cost is low, the power consumption is small, the application scenes are various, flight effects are good, and the product viscosity is improved.

The invention discloses a reliability evaluation method for performance degradation of a spinning frame, and the method comprises the steps: firstly introducing three standards: sensitivity, relevancy and importance, extracting performance degradation parameters of the spinning frame, and constructing a comprehensive degradation index through the analysis of a fault mode of the spinning frame; establishing a performance degradation model based on a Wiener process by using the constructed comprehensive degradation index, and establishing a burst failure model by using Weibull distribution; and then, studying the dependency of sudden failure and degradation failure of the performance of the spinning frame, creating a dependent competitive failure model based on a Copula function, and accessing reliability of the spinning frame. According to the invention, reliability evaluation of the spinning frame is realized, and a new method is provided for better health management of the spinning frame.

The invention provides an intelligent automatic vehicle selection system and method based on flexible parameter setting. Firstly, the types of drivers, vehicles and orders are divided based on business scenes and user types. Secondly, each automatic order sending condition parameter is set in the management system according to a business scene so as to facilitate subsequent optimization and screening of vehicles, the divided vehicles and driver types are divided into corresponding vehicle pools, and each vehicle pool has a corresponding weight parameter; furthermore, matching optimization is performed according to the corresponding parameters of the order and the parameters set by the management system, a vehicle group which preliminarily meets the requirements of the order is screened out, and then according to the set weight of each vehicle pool, an appropriate vehicle pool is selected by means of a weight polling algorithm so as to select the optimal vehicle to achieve the purpose of automatic order distribution. According to the invention, vehicles which do not meet the requirements can be effectively avoided from a large number of vehicles, the vehicle with the most matched order parameters is found, the automatic vehicle selection function of the system is achieved, the vehicle selection efficiency of the system logistics system is improved, and the labor cost is reduced.

The invention relates to a risk assessment method of teeth coloring, in particular to a risk assessment method of food, medicines, oral care supplies and the like for human dental coloring. The risk assessment method of teeth coloring comprises the following steps that step 1, laboratory models of mouth entrance products people used such as the food, the medicines and the oral care supplies are established; step 2, a baseline test of experimental teeth samples is carried out, and L values of all the untreated experimental teeth samples are measured by a colorimeter; step 3, the experimental teeth samples are placed in the models for many times treatments, during the space between each treatment, and the experimental teeth samples are placed in artificial saliva and put into a 37 DEG C constant temperature and humidity box; and step 4, the L values of all the experimental teeth samples treated by the step 3 are measured by the colorimeter, data analysis is carried out on the L values ofthe experimental teeth samples treated before and after, and the risk assessment is carried out on teeth coloring. According to the application scheme, the teeth dyeing risk of the mouth entrance products such as the food, the medicines and the oral care products can be can be effectively assessed.

The invention relates to a bush-type pile shoe jetting system for a self-elevating drilling platform. The bush-type pile shoe jetting system comprises at least two bundling main modules. Each bundling main module comprises a bundling main, a plurality of indefinite branch pipes and a plurality of nozzles; the bundling main is arranged on a worktable above a pile shoe, one side of the bundling main is connected with a main jetting pipe extending to the top end of a pile leg, bottom branches of the bundling main are connected with the indefinite branch pipes, and the branch pipes directly penetrate or are bundled to penetrate the upper surface of the pile shoe, then are bent smoothly in the pile shoe, and are further connected with the nozzles arranged on the lower surface of the pile shoe. With the bush-type pile shoe jetting system, the system failure caused by blocking of the branch pipes in application of other pile shoe jetting systems can be overcome effectively, smoothness of the pile shoe jetting system is facilitated, and pile jetting and pulling effects are improved.