62results about How to "Avoid difficult situations" patented technology

The invention relates to a vehicle intersection collision early warning method. Firstly, the position, direction, track radius, speed and acceleration information of a local vehicle and a target vehicle is collected; the driving trajectories and the collision point of the local vehicle and the target vehicle are calculated according to the position, direction and track radius information, and a collision area is calculated according to the collision point; whether the time from driving into the area to driving out of the collision area of the local vehicle and the time from driving into the collision area to driving out of the collision area of the target vehicle are overlapped or not is judged, when the two times are overlapped, the time T needed by the driving into the collision area of the local vehicle with a current speed and acceleration is calculated, and if the time T is smaller than a set value, the early warning result of alarm is executed. According to the scheme, the problems that a collision position is not accurate, the estimated time deviation of arriving an intersection is large and a lot of wrong alarms exist in the prior art are solved.

The invention provides a hardware realization method and a system for an artificial neural network algorithm, which overcome the defects of high cost and overlarge occupation of hardware resources of the prior hardware realization technology. The system comprises a top layer module, the top layer module consists of a plurality of neuron modules, pulse input ends of the neuron modules input given weight products, output ends of the neuron modules fit the given weight products into a Sigmoid function of a neutral network through a normal distribution random generator and a nonlinear converter, and then the Sigmoid function is converted into pulse to be output through a pulse converter. Compared with the prior realization technology, the hardware realization method and the system for the neural network algorithm avoid the embarrassment that a serial mode in the prior software realization is used to finish parallel computation, overcome the disadvantages of software realization, save a large amount of hardware resources due to the algorithm optimization, have lower cost due to the realization on an FPGA platform, utilize an optimized algorithm to avoid the difficulty that the Sigmoid function is difficult to realize by a hardware, and also save the hardware resources by using an accumulation mode.

The invention provides a controlling method and device for remote control driving, a controller and an electric car and relates to the technical field of car control. The control method comprises thesteps that an operating instruction sent by a remote control device is obtained; and whether the current state of the electric car meets the condition of executing of the operating instruction or notis judged, if yes, according to the operating instruction, a control signal is output to the controller of the electric car, and if not, a feedback signal is output to the remote control device. According to the scheme, the car is controlled by a car owner outside the car to be parked in a narrow area, the difficulty of getting off of a user is avoided, and the car using experience of the car owner is improved; and the development period is short, and the development cost is low.

The invention discloses a force feedback main manipulator for minimally invasive surgery. The force feedback main manipulator comprises a first parallelogram structure, a second parallelogram structure, an attitude adjusting mechanism and a clamping mechanism; the first parallelogram structure and the second parallelogram structure are both formed by a plurality of rod pieces which are sequentially hinged end to end; a first hinging point of the first parallelogram structure is coaxial with a first hinging point of the second parallelogram structure; a second hinging point of the first parallelogram structure is connected with a second hinging point of the second parallelogram structure through a connecting rod; the tail end of the second parallelogram structure is a wrist part, wherein the wrist part can be keep horizontal under connection of the first parallelogram structure and the second parallelogram structure; the wrist part is hinged with the attitude adjusting mechanism; and the attitude adjusting mechanism is hinged with the clamping mechanism. The force feedback main manipulator provided by the invention can meet the requirements of minimally invasive surgery, conforms toergonomics, has a force feedback function and is low in cost.

The invention provides a continuous treatment method for dye industry acid wastewater. The method includes the steps of A, primary decoloring, wherein the sulfuric acid or hydrochloric acid containing acid wastewater generated in the production process of the dye industry continuously enters the bottom of a granular activated carbon adsorption column, adsorption decoloring is conducted from bottom to top, and primarily-decolored liquid is obtained; B, neutralizing, wherein the primarily-decolored liquid is neutralized to the state that the pH value ranges from 2.5 to 7, and neutralized liquid is obtained; C, secondary decoloring, wherein the neutralized liquid continuously enters the bottom of the granular activated carbon adsorption column, secondary adsorption decoloring is conducted from bottom to top, and secondarily-decolored liquid is obtained; D, concentration and crystallization; E, activated carbon regeneration, wherein saturated granular activated carbon discharged in the step A and the step C is washed with water to the state that the pH value ranges from 2 to 7, then the washed saturated granular activated carbon is fed into a regeneration system to be regenerated, the regenerated granular activated carbon enters the granular activated carbon adsorption column to be recycled, but tail gas generated by the regeneration system is absorbed by a tail gas tower.

The invention relates to a positive-pressure air sealing device with an anti-blocking function. The positive-pressure air sealing device with the anti-blocking function comprises an air sealing deviceshell body, a charge port and a discharge port which are connected to the air sealing device shell body, a rotary shaft connected into the air sealing device shell body, blades connected to the rotary shaft, and a drive mechanism driving the rotary shaft to rotate, wherein a plurality of arc-shaped movable plates are connected between the interior of the air sealing device shell body and the blades through telescopic mechanisms; the plurality of arc-shaped movable plates are mutually spliced in a matching manner to form an inner cavity of the air sealing device; and a pressure sensor electrically connected with the corresponding telescopic mechanism is connected to each arc-shaped movable plate. The air sealing device has a function of automatically adjusting gaps between the blades and an air sealing device housing in a use process, that is, the air sealing device is capable of automatically adjusting in the case of blocking between the blades and the air sealing device housing, damage to the blades of the air sealing device is avoided, lots of time for equipment maintenance is avoided, and high working efficiency is achieved.

The invention discloses a simple internal bracing clamp for a friction-stir welding circumferential weld and belongs to the technical field of inner bracing clamps for welding. The simple internal bracing clamp for the friction-stir welding circumferential weld comprises a pressing disk assembly, a clamp body and a base assembly used for fixing the clamp body. The pressing disk assembly is located above the clamp body. The base assembly is located below the clamp body. The pressing disk assembly is connected with the clamp body through a threaded rod of the clamp body. Hexagonal head bolts are arranged between the clamp body and the base assembly. A gland nut is arranged at the center of the top of the pressing disk assembly. The clamp body is composed of pre-tightening blocks, L-shaped blocks, a wedge, the threaded rod and a locating disk. The simple internal bracing clamp for the friction-stir welding circumferential weld can effectively and tightly press products and prevent the products from rotating in the movement direction of a stirring pin during welding, and therefore the welding quality is guaranteed; the coaxiality of the welded products can be effectively guaranteed, so that the welding seam dislocation is avoided during butt joint; the situation that because metal is squeezed into a gap of the clamp, the products are difficult to take out after welding can be avoided; and meanwhile, the simple internal bracing clamp for the friction-stir welding circumferential weld further has the advantages of being simple in structure, short in manufacturing period, low in cost and the like.

The invention discloses an LSTM neural network short-time traffic flow prediction method based on ant colony algorithm optimization. The method comprises the steps: importing historical data from a certain intersection passage database into a Pands module of Python for preprocessing, and carrying out grouping aggregation according to a time period; carrying out normalization processing on the processed data; constructing a training model based on a long-term and short-term neural network, and dividing the training set and the verification set according to the proportion of 80% of the trainingset and 20% of the verification set; and optimizing the neural network of the LSTM based on a heuristic thought through an At-Cycle ant colony algorithm, comparing the neural network with real-time data, evaluating the accuracy of the model by using an MASE and decision coefficient index, and finally, completing the prediction of the short-time traffic flow of the intersection. According to the invention, the ant colony algorithm is used to optimize the setting of hyper-parameters, so that the problem of difficulty in setting hyper-parameters is avoided, the determination coefficient is increased by 8%, and the accuracy of intersection short-term traffic flow prediction can be effectively improved.

The present invention provides a hardware implementation method and system of an artificial neural network algorithm, which overcomes the disadvantages of expensive and excessively occupied hardware resources in the existing hardware implementation technology; it includes a top-level module, and the top-level module is composed of several neuron modules The pulse input terminal of the neuron module inputs a given weight product, and its output terminal is fitted to the Sigmoid function of the neural network through a normal distribution random generator and a nonlinear transformer, and then through a pulse converter, converted Pulse output; the hardware implementation method and system of the neural network algorithm of the present invention are compared with existing implementation technology, overcome the embarrassment of completing parallel computing in the serial mode in the software implementation in the past, and replace the disadvantages of software implementation; Due to the optimization of the algorithm, a lot of hardware resources are saved. It is implemented on the FPGA platform, and the cost is low. Using the optimized algorithm, it avoids the dilemma that the Sigmoid function is difficult to implement with hardware, and uses the accumulation method to save hardware resources.

The invention discloses a hydraulic liner releaser and a hydraulic liner release method for oil and gas wells. One end of a shell of the releaser of the invention is connected with a dual-male pup joint of a hanger in a sealed way, while the other end is connected with the pup joint of a liner in a sealed way; and one end of an insert pipe is connected with the pup joint of a drill stem in a sealed way, while the other end is connected with a locking mechanism which is arranged in the shell, a pressure transfer hole which leads to a hydraulic cylinder is formed on the insert pipe, and a release mechanism is arranged in the insert pipe. In the invention, the liner is placed in the well by adopting the resetting lock-connection control of a liner column and a drill column and the blockage control of the pressure transfer hole first; then the liner is released in a mode that the release mechanism releases the blockage under a hydraulic pressure to perform hanging operation and release the resetting lock; and finally the separation of the liner is determined by a method of extracting the drill column under a controlled pressure and observing the pressure change of the drill column. The hydraulic liner releaser and the hydraulic liner release method suitable for the construction of liner hanging and cementing of deep wells, ultra deep wells, inclined wells and horizontal wells are convenient to operate, safe and reliable and strengthen the use effect of a liner hanger.

The invention relates to a garbage can, in particular to an odor-resistant automatic cover opening garbage can, and aims at providing an odor-resistant automatic cover opening garbage can with a garbage can cover capable of being conveniently opened by people. According to the technical scheme, the odor-resistant automatic cover opening garbage can comprises a can body, a containing ring, a control plate, a left cover opening switch, a right cover opening switch, shaft sleeves, damping rotation shafts, connecting blocks, cover plates and the like; the containing ring is arranged on the top ofthe can body, the control plate is arranged at the middle portion of the right side of the containing ring, the left cover opening switch is arranged at the upper portion of the outer side of the control plate, the right cover opening switch is arranged at the lower portion of the outer side of the control plate, and containing holes are formed in the lower portion of the front wall of the can body. A user places garbage to a left or right first baffle, after the garbage stops signals of infrared bijection sensors, the infrared bijection sensors trigger a power module to supply power to a whole circuit, at the time, the user can press the left cover opening switch or the right cover opening switch to make the left first baffle or the right first baffle to be opened, and the garbage can fall into the garbage can.

The invention discloses a grinding device for a grain dryer. The grinding device comprises bases, a box body and placing boxes. A feeding funnel is fixedly installed at the intermediate position of the top of the box body, and a screen cloth is fixedly installed in the feeding funnel. The placing boxes are fixedly mounted at the top ends, on both sides of the feeding funnel, of the box body, and first motors are fixedly mounted in the placing boxes. Primary grinding mechanisms are fixedly mounted at the output ends of the first motors, and bearing seats are correspondingly and fixedly mountedon both sides in the box body. Grinding wheels are fixedly mounted between the bearing seats, and filter mechanisms are fixedly mounted at the positions, at the bottom ends of the bearing seats, in the box body. A valve is movably mounted at the intermediate position of the bottom end of the box body, and the bases are correspondingly and fixedly mounted at the bottom ends, on both sides of the valve, of the box body. A supply hub is fixedly arranged on the surface of the box body. The grinding device has the advantages of filtering impurities and grinding thoroughly by arranging a series of structures.

According to the waste material conveying and collecting system with the full material reminding function, in the waste material conveying and collecting system with the full material reminding function, a lower waste material conveying belt is arranged on a slitting machine head or an edge wire machine so as to receive and convey waste materials in the first direction; the upper waste conveyor belt is in transmission connection with the lower waste conveyor belt to receive and convey waste from the lower waste conveyor belt in a second direction; the transmission conveyor belt is in transmission connection with the upper waste conveyor belt to receive and convey waste from the upper waste conveyor belt in a third direction; the discharging device is in transmission connection with the transmission conveyor belt to receive and convey waste materials from the transmission conveyor belt, the at least two waste material boxes are supported on the moving mechanism to be movably arranged relative to the discharging device, and each waste material box is provided with a material fullness sensing device for measuring the material level of the waste material box and responds to material level information of the material fullness sensing device. The control system controls the hydraulic system to adjust lifting of the discharging hopper and controls the moving mechanism to adjust the position of the waste box relative to the discharging hopper.

The invention discloses a novel grain drying machine. The grain drying machine comprises a base, a box body and a heater, a ventilating cap is fixedly arranged on one side of the top end of the box body through a bolt, an air inlet is fixedly formed in one side of the box body, an air inlet device is fixedly arranged on one side of the box body on the surface of the air inlet through bolts, a filter screen is fixedly arranged in the interior of the box body at one side of the air inlet through bolts, the top end of the interior of the box body is fixedly provided with a first fan through a bolt, one side of the interior of the box body is fixedly provided with a heater through a bolt, a discharging opening is fixedly formed in the bottom end of the interior of the box body, the two sides of the interior of the box body are fixedly provided with first auxiliary mechanisms through bolts, and a first sieve plate is movably arranged between the first auxiliary mechanisms. According to thegrain drying machine, due to the fact that a series of structures are arranged to enable the device to fully utilize heat energy, and the grain drying efficiency is improved.

The invention aims to provide gauze with a tail. The tail end of gauze used in medical treatment is attached with a gauze rope, so that the problem that hemostatic gauze is not easy to take out when a sutural surface exposes unclearly is solved. The purpose of the gauze with the tail is realized as follows: the gauze with the tail used in the medical treatment is provided with square gauze; and the tail end of the gauze is attached with the gauze rope. As the tail end of the gauze is attached with the gauze rope, the tail end of the gauze, attached with the gauze rope, can be exposed out of a body when the gauze is placed to stop bleeding and the sutural surface exposes unclearly; and when the gauze needs to be taken out, as the gauze rope carries the hemostatic gauze out, the condition that the gauze is difficult to take out due to the fact that the sutural surface exposes unclearly is avoided.

The invention discloses a two-stroke internal combustion engine, the content of harmful components (such as hydrocarbons) in the exhaust gas is reduced, and the amount of unburned air-fuel mixture can be reduced. The internal combustion engine has a crankshaft located under the piston chamber and a combustion chamber above the piston. One or two pairs of scavenging passages connecting the crankcase and the combustion chamber are arranged, and the pair or two pairs of scavenging passages are arranged symmetrically with respect to the bisecting surface of the exhaust port, thus forming a Schnüller type return scavenging system. Each scavenging channel is throttled close to the scavenging inlet.

The invention provides an engine misfire detection method, device and system, and the method comprises: an obtaining step: obtaining first data detected by a crankshaft sensor in an engine and currentdata detected by a knocking sensor in the engine; a passing time calculation step of calculating respective passing time of a plurality of cylinders in the engine according to the first data; a misfire judgment parameter calculation step: calculating the kinetic energy difference between the current cylinder and other air cylinders in the plurality of cylinders according to the passing time, andtaking the maximum kinetic energy difference as a misfire judgment parameter; a filtering parameter calculation step of calculating current filtering data according to the current data and historicalfiltering data; and a misfire judgment step: judging that the current cylinder is misfire when the misfire judgment parameter is greater than or equal to a first threshold value and the current filtering data is less than a second threshold value.

The invention discloses a construction method and equipment for mounting a vertical-precipitation well point pipe. The equipment can be called an efficient spiling machine for the precipitation well point pipe, is prepared by modifying the conventional crawler-type plastic drainage plate spiling machine, and enabling the conventional spiling machine to achieve the precipitation well point pipe spiling and digging functions, and comprises a chassis, a main frame, a winding plant, a power plant, a fixed pulley, a casing pipe, a mobile type pile shoe and a rope, wherein the main frame and the winding plant are fixedly connected with the chassis; the power plant is attached to the outer side of the main frame; the upper end of the power plant is connected with the winding plant, and the lower end of the power plant is connected with the casing pipe; the fixed pulley is arranged at the top, close to the power plant, of the casing pipe; the rope passes through the fixed pulley; one end of the rope is tied to the rear end of the well point pipe, and the other end of the rope is held by operating personnel; the mobile type pile shoe is mounted at the bottom end of the casing pipe and in an opening state or a closing state; the front end of the well point pipe to be mounted is bound with a fixed plastic blink drain, and the rear end of the well point pipe to be mounted is connected with the rope. The construction method and the equipment disclosed by the invention have the advantages of simple and efficient construction, civilization, environment-friendliness, and low cost.

The invention discloses a bath heater intelligent touch switch. The bath heater intelligent touch switch comprises an intelligent touch switch body, a touch display screen is fixedly arranged on the front surface of the intelligent touch switch body, and a waterproof cover is arranged on the front surface of the intelligent touch switch body. According to the bath heater intelligent touch switch,the touch display screen, a hinge, the waterproof cover, phosphite coating, a handle, a travel switch, a limiting plate, a limiting groove, a sealing gasket, a waterproof film, a bulb and a clamping groove, a limiting rod and a clamping block are matched with one another, so that the problem that an existing intelligent touch switch is low in practicability is solved; when the intelligent touch switch body is used, the touch display screen is protected through the waterproof film and the sealing gasket, so that the situation that the touch display screen is damaged due to a short circuit whenthe touch display screen is in contact with water during use is avoided, and the use cost of the intelligent touch switch body is reduced; and meanwhile, due to the arrangement of the travel switch and the bulb, a light source can be provided for a user in the dark place.

The invention discloses a cooling device for a packaging film packing belt. The cooling device comprises a base, a lifting mechanism and a water tank, wherein the interior of the base is fixedly provided with a storage battery through welding, a lifting mechanism is movably arranged at the middle position of the top end of the base through bolts, the top end of the lifting mechanism is fixedly provided with a water tank through the bolts, the two sides of the top end of the water tank are fixedly provided with a water pump through the bolts, the input end of the water pump extends into the interior of the water tank, the two sides of the water tank are fixedly provided with fog-shaped spray heads through the bolts, the output end of the water pump extends into the spray-shaped spray heads,the two sides of the bottom end of the water tank are movably provided with fans through bolts, the top ends of the bases on the two sides of the lifting mechanism are fixedly provided with auxiliarymechanisms through the bolts. According to the cooling device for the packaging film packing belt, a series of structures are arranged, so that the cooling device has a lifting function, and meanwhile, air cooling and water cooling are combined into a whole, so that the working efficiency of the cooling device is improved.

The invention belongs to the technical field of thin poplar sheet processing, and specifically relates to a method for improving the toughness of a thin fast growing poplar sheet. The method comprisesfollowing steps: processing a thin fast growing poplar sheet by an ethanol solution of sugar alcohol to obtain a preprocessed sheet, processing the preprocessed sheet by a processing agent, refrigerating the sheet, drying the sheet in a drying kiln, and preparing a finished product. Compared with the prior art, the method has the advantages that poplar wood is preprocessed by an ethanol solutionof sugar alcohol at a proper temperature, the structures of cells in the polar sheets are changed; processed poplar sheets will not be cracked in the drying kiln during the drying process; after the poplar sheets are processed by the processing agent, refrigerated, and dried in the drying kiln, the fibers in the wood are redistributed and combined, the fibers become uniform and are resistant to deformation; wood splinters will not be generated during the cutting and planning process, the stability and toughness of obtained poplar sheets are improved, and the application range is enlarged.

The invention relates to a positive-pressure air sealing device with an anti-blocking function. The positive-pressure air sealing device with the anti-blocking function comprises an air sealing deviceshell body, a charge port and a discharge port which are connected to the air sealing device shell body, a rotary shaft connected into the air sealing device shell body, blades connected to the rotary shaft, and a drive mechanism driving the rotary shaft to rotate, wherein a plurality of arc-shaped movable plates are connected between the interior of the air sealing device shell body and the blades through telescopic mechanisms; the plurality of arc-shaped movable plates are mutually spliced in a matching manner to form an inner cavity of the air sealing device; and a pressure sensor electrically connected with the corresponding telescopic mechanism is connected to each arc-shaped movable plate. The air sealing device has a function of automatically adjusting gaps between the blades and an air sealing device housing in a use process, that is, the air sealing device is capable of automatically adjusting in the case of blocking between the blades and the air sealing device housing, damage to the blades of the air sealing device is avoided, lots of time for equipment maintenance is avoided, and high working efficiency is achieved.

A synchronous acquisition and playback method for the nuclear magnetic resonance images comprises the following steps: acquiring first image information of a patient by utilizing a nuclear magnetic resonance instrument, wherein the first image information is analog signal information; carrying out hash coding on the collected first image information, converting the first image information into digital abstract data, and adding a timestamp field; adding the receiving time and date information of the digital abstract data file into the timestamp field, and encrypting; and enabling the image display device to decrypt the encrypted digital abstract data file to obtain second image information of the patient, the second image information being digital signal information, then restoring a nuclear magnetic resonance image of the patient and a timestamp of the nuclear magnetic resonance image based on the second image information of the patient, and performing synchronous playback through a display of the image display device. According to the scheme, the memory consumption and the storage space are reduced by adopting hash coding, the transmission speed is high, the unique identifier is established for each nuclear magnetic resonance image by adding the timestamp field, and the identification accuracy of the nuclear magnetic resonance images is improved.

The invention discloses an adjustable child bicycle auxiliary wheel and relates to the field of child bicycle auxiliary equipment, in particular to an adjustable child bicycle auxiliary wheel. The support force of the auxiliary wheel can be adjusted according to the children's learning process, in order to better assist children in learning how to ride. A connecting assembly and auxiliary wheels are included. The connecting assembly comprises connecting tubes, supporting tubes, sliding blocks, springs and supporting rods; one end of each connecting tube is connected with a frame, and the end near the frame is higher than the end away from the frame; each connecting tube is provided with a receiving groove in the axial direction, one end of each supporting tube is connected with the corresponding sliding block; the sliding blocks are slidably arranged in the receiving grooves and provided with locking devices; the supporting rods are sleeved with the supporting tubes, the springs are arranged between the end faces of one ends of the supporting rods and the inner bottom faces of the supporting tubes, and the other ends of the supporting rods are connected with the auxiliary wheels. The adjustable child bicycle auxiliary wheel has the advantages that the support force of the auxiliary wheel can be adjusted according to the children's learning process and thus children can be better assisted in learning how to ride.

The invention provides a portable biomedical detection device, comprising a hollow box-shaped carrier made of light material, a detection unit which is arranged in the box-shaped carrier, an operation unit which can digitalize the detection result of the detection unit, a display unit which can display the detection result and a power supply unit which provides the operation energy for driving the detection unit, the operation unit and the display unit. When a biomedical detection chip is used for detecting diseases, the portable biomedical detection device can quickly digitalize the information displayed on the biomedical detection chip and carry out result judgment; furthermore, the biomedical detection device is extremely light and easy to be carried.