98 results about "Collision prevention" patented technology

The invention belongs to the technical field of ship collision avoidance, discloses a ship collision avoidance early warning method and system based on vision and AIS data collaborative perception, and firstly provides an enhanced YOLO (E-YOLO) target detector which can detect a ship in a complex environment in a high-precision and real-time manner and perform ship tracking and visual trajectory extraction in combination with a DeepSORT algorithm. Secondly, a homography coordinate conversion method based on multiple frames of static images is provided, conversion between a pixel coordinate system and a world coordinate system can be realized without accurate camera calibration, and the fusion precision of visual data and AIS data is improved. AIS and visual information are matched through a K-D tree algorithm, AIS data are projected to visual coordinates, and accurate matching of heterogeneous data is achieved. The system is provided with ship illegal behavior judgment and collision early warning rules, behaviors such as overspeed and abnormal AIS closing can be recognized, and early warning is triggered. Experiments prove that the method provided by the invention is strong in adaptability and high in robustness, and can effectively improve the ship monitoring and traffic management level of the bridge water area.

The invention relates to the field of automation, and particularly provides a crane boom anti-collision method and system based on dynamic detection, and the method comprises the following steps: obtaining power parameters, motion data and structural data of a main engine boom and an auxiliary engine boom; determining the current position information of a main engine boom, and determining the current position information of an auxiliary engine boom; acquiring predicted deceleration position information and predicted stop position information of the main engine arm support based on the motion data, the power parameters and the structural data of the main engine arm support; based on the current position information of the main machine arm frame, the current position information of the auxiliary machine arm frame and the predicted deceleration position information and the predicted stop position information of the main machine arm frame, judging a collision risk assessment result of the main machine arm frame and the auxiliary machine arm frame; and when the collision risk assessment result is early warning, the main engine boom is decelerated, or when the collision risk assessment result is dangerous, the main engine boom is stopped. According to the anti-collision method, collision of the crane boom can be avoided.

The present disclosure relates to an artificial intelligence-based load and heavy equipment collision prevention device and a control method thereof, the device including: a camera for capturing a forward image; a communication module for transmitting and receiving data to and from an external device; a memory in which at least one process for the artificial intelligence-based load and heavy equipment collision prevention is stored; and a processor for performing an operation according to the process. The processor can extract a person image and a dangerous object image, including the load and the heavy equipment, from the image using an artificial intelligence model, measure the separation distance between the extracted dangerous object image and the extracted person image, identify a collision risk on the basis of the measured separation distance, and output a warning message when the identified collision risk is present.

The invention discloses nondestructive testing equipment for internal defects of high-quality titanium alloy bars, and relates to the technical field of sensor detection.The nondestructive testing equipment comprises a feeder, a material changing sliding block, a discharging base, an anti-collision table, a clamping assembly, a truss guide rail, a moving module and an ultrasonic testing assembly; the feeding device is arranged above the material changing sliding block, the anti-collision table is installed on one side of the discharging base, the clamping assembly is installed in the anti-collision table, the truss guide rail is located between the discharging base and the anti-collision table, the truss guide rail is erected through a support, the moving module is installed in the truss guide rail, and the moving module is connected with the control system through a circuit. The ultrasonic detection assembly is installed in the mobile module, through the arrangement of the ultrasonic detection assembly, the technical problem that ultrasonic waves cannot detect gaps is solved, and the use and maintenance cost of the detection equipment is reduced.

The invention discloses an intelligent tower crane anti-collision system and method in the technical field of tower crane construction, the intelligent tower crane anti-collision system comprises a sensing module, the sensing module is installed on a lifting hook component of a tower crane, and the sensing module detects distance information with a lifted object; and the control module is electrically connected with the sensing module. The distance information and the median distance information are virtually simulated into three-dimensional virtual anti-collision area information through the simulation module, and the three-dimensional virtual anti-collision area information can comprehensively simulate a rotation area of a lifted object in the lifting process; the information of the plurality of three-dimensional virtual anti-collision areas is coupled through the data processing module to obtain a final anti-collision area, and the final anti-collision area is taken as a collision prevention reference, so that collision among different articles can be comprehensively prevented when the plurality of tower cranes are used for hoisting the different articles; according to the system, corresponding virtual final anti-collision areas can be formed according to different corresponding objects.

The invention discloses an anti-collision method and system, a storage medium and electronic equipment, and the method comprises the steps: firstly obtaining a depth image collected by image collection equipment, and then determining the distance between a target object and a C-shaped arm according to the depth image. And finally, the motion state of the C-shaped arm is adjusted according to the distance and a preset threshold value. Namely, according to the method, the distance between the target object and the C-shaped arm is determined, the motion state of the C-shaped arm is adjusted, and collision with a user and the like is avoided.

The invention belongs to the technical field of bridge pier collision prevention, and particularly provides a buffer collision prevention device and a bridge, the device adopts a barrel as an outer side structure, the barrel is extruded and deformed by direct collision to dissipate energy, the deformed barrel can indirectly transfer impact energy to a nearby barrel through internal liquid flow, so that the barrel expands and deforms to dissipate energy, and the energy consumption is reduced. Meanwhile, impact possibly drives vortex water flow formed in the barrel to consume energy, impact can be transmitted to the energy consumption columns to enable the energy consumption columns to deform and consume energy, the chains connect the corresponding energy consumption units into a whole, the impact resistance is higher, the barrel is prevented from being disengaged from the energy consumption columns due to impact, other barrels and the energy consumption columns on the same chain can be driven to consume energy, and the service life of the energy consumption columns is prolonged. The device adopts a three-stage energy dissipation series-parallel connection system, is good in deformability, is favorable for prolonging the service life of the device, can have a good energy dissipation effect under larger and smaller impact loads, and meanwhile, does not lose an anti-collision function as a whole due to damage of a certain unit.

The invention relates to the technical field of material conveying, in particular to an anti-collision device and method. The conveying roller way in the anti-collision device is provided with the free roller, and the rotating part is installed on the free roller, so that when materials move to the free roller, the free roller starts to rotate and drives the rotating part to rotate, blades of the rotating part are gradually close to the proximity switch, and after the proximity switch senses the blades on the rotating part, the free roller is driven to rotate. The proximity switch sends a stop signal to the driver. The driver is electrically connected with the proximity switch, so that the driver can receive the stop signal and stop driving the conveying roller way; therefore, operation of the conveying roller way is stopped in time, materials stop moving in time, the materials are prevented from colliding with a buffer at the tail end of the conveying roller way, the materials and the buffer are prevented from being damaged, and the quality of the materials is guaranteed.

To provide a collision prevention circuit for preventing collision between devices.SOLUTION: A collision prevention circuit according to an embodiment prevents a collision between first and second devices in control of movement of the first and second devices based on first and second information. The second device is a device that moves on the same track as the first device. The first and second information indicates first and second moving operations in which the first and second devices move by first and second moving amounts at first and second moving speeds. The collision prevention circuit is configured to perform determination processing of determining, based on the first information and the second information, a possibility that the first device executing the first move operation collides with the second device executing the second move operation. When the collision prevention circuit determines that the first and second devices collide with each other, the collision prevention circuit calculates a waiting time based on at least the first movement speed, the first movement amount, and the second movement speed, and causes the first device to start the first movement operation after causing the first device to wait for the waiting time.SELECTED DRAWING: Figure 4

1. The name of this design product: crash barrier with drainage pipes. 2. Purpose of this design product: a crash barrier used for buffering and collision prevention. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture. 5. The rear view is the same as the main view, so the rear view is omitted; the right view is the same as the left view, so the right view is omitted.

The application relates to a seat adjusting device in a vehicle collision process and belongs to the technical field of vehicle collision prevention. The seat adjusting device comprises a lateral overturning assembly, a sliding assembly, a seat body, a sensing module and a control module. The seat body is connected with the bottom of a passenger space of a vehicle body through the lateral overturning assembly and the sliding assembly. The seat body slides away from a side of the vehicle body that is impacted under the drive of the sliding assembly. The seat body overturns away from the side of the vehicle body that is impacted under the drive of the lateral overturning assembly. The sensing module comprises four acceleration sensor arrays arranged on four sides of a vehicle shell respectively. Any acceleration sensor array is used for measuring the acceleration of the shell and uploading to the control module in real time. The control module is electrically connected with the lateral overturning assembly, the sliding assembly and the sensing module and controls the running time of the lateral overturning assembly, the sliding assembly and the sensing module. The seat adjusting device can change the evasion distance according to the impact severity while considering the two evasion schemes of translation and overturning.

The present invention discloses a near-track bucket wheel stacker-reclaimer anti-collision method, which includes the following steps: establishing a simplified anti-collision protection model for two near-track bucket wheel stackers, wherein the stacker-reclaimer in the simplified model includes a rotation center and three strip areas, the three strip areas being a forearm, a counterweight, a tail car, and a belt, and the track width in the model is less than the forearm length; marking multiple key parameters of the two stackers on the horizontal plane and the vertical plane in the simplified model, and calculating multiple characteristic distances based on the key parameters; comparing the calculated multiple characteristic distances with corresponding preset safety thresholds to determine the collision situation between the current stacker-reclaimer and the adjacent stacker-reclaimer, and making corresponding control strategies. The present invention is suitable for application environments where the distance between adjacent tracks of stackers is relatively short, and the tail car belt and counterweight of the stacker-reclaimer are taken into consideration for the anti-collision of the stacker-reclaimer, thereby achieving a good anti-collision warning effect.

An object recognition device includes a first sensor that acquires an image of an object present outside a movable body, a second sensor that detects a distance to the object, and a recognition unit that recognizes a position of the object with respect to the movable body and a shape of the object at the position by using outputs from the first sensor and the second sensor. If determining that the object is a first type object having a size equal to or more than a predetermined size, the recognition unit determines an actual shape of the object based on an image of the object acquired by the first sensor and the distance detected by the second sensor, and recognizes that the object is present as the actual shape at a position distanced from the movable body by the distance.

This invention relates to a method, device, and electronic equipment for underwater vehicle formation control. The method includes: constructing a formation configuration maintenance framework based on rigid graph theory, and determining the relative positional relationships between vehicles through distance constraints; establishing an obstacle avoidance control model based on the artificial potential field method, calculating the potential field force based on the distance between the vehicle and the obstacle and the distance between vehicles, thereby achieving obstacle avoidance and collision prevention between vehicles; performing online identification and compensation of unmodeled dynamics and external disturbances in the vehicle dynamics model based on a radial basis function neural network, using a Gaussian function as the activation function; and vector-fusing the formation maintenance control force, potential field force, and compensation output of the radial basis function neural network to generate control commands for each vehicle, thereby achieving formation control. This invention can achieve high-precision formation maintenance, effective obstacle avoidance, and adaptive disturbance compensation capabilities in complex underwater environments.

The application discloses a rectangular stockyard stacker-reclaimer collision prevention method and system, belongs to the technical field of stacker-reclaimer anti-collision analysis, simplifies detection and calculation of three-dimensional position coordinate positions of a cantilever end of a stacker and a top end of a reclaimer rake in a rectangular stockyard, and after checking longitudinal and vertical space coordinates, only accurate measurement of horizontal positions of the two is needed to build software safety anti-collision functions of the two vehicles; a set of laser ranging sensors is added to each stacker-reclaimer, and the set of laser ranging sensors is used for tracking and redundancy backup; position detection sensors are evenly arranged beside tracks on both sides of the stockyard, and encoder data on traveling wheels of the stacker-reclaimer is compared and checked; in addition to building software installation anti-collision functions based on accurate detection of equipment coordinate positions, a set of ultrasonic ranging and rope anti-collision systems is arranged on a large arm of the stacker-reclaimer, and the set of ultrasonic ranging and rope anti-collision systems together form a safety anti-collision system of the rectangular stockyard stacker-reclaimer, and create a fundamental guarantee for safe and stable operation of unattended operation of the stockyard.

The utility model relates to the technical field of machine tool machining, and discloses a machine tool machining head anti-collision device which comprises a cylindrical first fixing barrel, a second fixing barrel arranged in the first fixing barrel, a connecting rod arranged in the second fixing barrel and a machining head body arranged at the bottom of the connecting rod. A protection piece used for protecting the machining head body is arranged between the first fixing cylinder and the second fixing piece in a sliding mode, and a set distance exists between the bottom end of the protection piece and the bottom end of the machining head body. The utility model provides an anti-collision device for a machining head of a machine tool. The anti-collision device has the effect of reducing production cost.

The present invention discloses a tower crane anti-collision system based on computer vision detection, belonging to the technical field of building safety systems, which includes a central main control system, a transmission module, a scheduling module, an early warning module, a processing module, and a calculation module. The central main control system is set on a computer, which includes a first host located inside the tower crane and a second host connected to ground personnel. The central main control system is connected to the transmission module, the calculation module, the scheduling module, the early warning module, and the processing module through network signals; the central main control system includes the access rights of the administrator and a login terminal. The access rights include password verification, and the entered password value must be the same as the preset value in the central main control system to enter the central main control system. If they are inconsistent, entry is not allowed. This tower crane anti-collision system based on computer vision detection enables the tower cranes to operate in a reasonable and safe range and meet the conditions for safe use during group operation.

The invention belongs to the technical field of coal mining machine collision prevention, and discloses a coal mining machine and hydraulic support collision prevention early warning method which comprises the steps that a plurality of recognition structures are installed at the position, to be recognized, of a hydraulic support, the recognition structures comprise a plurality of corner reflectors, and the position, to be recognized, of the hydraulic support comprises a face guard or a top beam; echo signal data of the to-be-recognized part are obtained through a radar; inputting the echo signal data into a contour recognition model for contour recognition, and outputting contour data of the to-be-recognized part; wherein the contour recognition model is constructed based on a convolutional neural network; the distance between the coal mining machine and the hydraulic support is judged based on the contour data of the to-be-recognized part, and when the distance between the coal mining machine and the hydraulic support is smaller than a preset collision threshold value, a collision early warning and protection strategy is sent out. According to the technical scheme, the contour of the side protection plate / top beam structure of the hydraulic support can be rapidly and correctly recognized, and then anti-collision early warning of the coal mining machine and the hydraulic support is achieved.

The invention relates to a method (M20) for collision prevention for a vehicle (100), comprising: providing (S13) a virtual vehicle model (150) which has different vehicle heights (250) at at least two points; providing (S14) at least one piece of obstacle information which is indicative of a position of an obstacle (220) and a clearance (230) below the obstacle (220); and determining the shortest distance (240) between the vehicle (100) and an obstacle (220) on the basis of the provided obstacle information and the provided vehicle model (150).

To provide a collision prevention device, a collision prevention method, and a collision prevention program that are improved to be able to reduce a possibility that collision prevention support control is unnecessarily performed without requiring the presence of a preceding vehicle in a state where a movable body such as a train moves transversely on the level different from that of an own vehicle.SOLUTION: A collision prevention device includes: a radar device configured to detect a three-dimensional object approaching from the front side of an own vehicle to the front of the own vehicle; and a control device configured to execute collision prevention support control for reducing a possibility that the own vehicle collides with the three-dimensional object (S110) when determining that the own vehicle may collide with the three-dimensional object (S90). The control device suppresses the execution of collision prevention support control (S80, S100) when determining that the three-dimensional object is a group of movable bodies in rows with the number equal to or larger than a reference value (S30 to S50) and determining that no track for a track vehicle crossing at grade with a road on which the own vehicle runs is present in front of the own vehicle (S70).SELECTED DRAWING: Figure 2

The utility model relates to a detection device with an anti-collision function, belongs to the field of X-ray nondestructive testing, and solves the problems that in the prior art, when a temporary workbench is additionally arranged on a basic workbench, due to the fact that the moving stroke between a detector and the temporary workbench is changed, an operator needs to prevent the detector from colliding through visual observation, and the detection efficiency is high. And the workload of operators is increased. The anti-collision device comprises a basic workbench, a temporary workbench, an adjustable support frame, a radiation source, a detector, an anti-collision mechanism and a controller, the anti-collision mechanism comprises a safety contact edge, the safety contact edge wraps the edge of the detector and is connected with the controller, and when a workpiece to be detected or the basic workbench or the temporary workbench or other foreign matters are in contact with the safety contact edge, the safety contact edge is connected with the controller. The safety contact edge can send an instruction to the controller, and the detection device is stopped through the controller. According to the utility model, the automatic control collision prevention of the detection device is realized, and the workload of operators is reduced.

The novel joint type industrial robot comprises a robot body, a joint cooling mechanism, a robot driving mechanism and an obstacle avoidance mechanism, and the joint cooling mechanism comprises a liquid storage box, a circulating pump, a cooling pipe, a refrigeration plate, a ventilation groove and a centrifugal radiator which are installed at the bottom of the robot body; the robot driving mechanism comprises a driving frame, a second motor, a gear, a pulley, a limiting frame, a transmission groove, a rack and a limiting groove which are installed at the bottom of the liquid storage box, the obstacle avoidance mechanism comprises a laser radar set and a control module which are installed on the robot body, and the laser radar set collects the surrounding conditions of the robot body and transmits the surrounding conditions to the control module. The joint type industrial robot is driven by the robot driving mechanism to move on the workbench, obstacle avoidance work is conducted by installing the laser radar sets around the robot, the effect of automatically moving and adjusting the position of the robot is achieved, and the beneficial effects of automatic obstacle avoidance and collision prevention are achieved.

This item is attached to glass, transparent plates, etc. and used as a collision prevention sign.

The invention discloses an anti-collision method and system for a double-gantry machine table and a medium, and is applied to a motion controller of a motor. The method comprises the steps that the current states and next-step moving instructions of the two machine tables are obtained respectively; when at least one machine table is responded to execute moving operation, whether the motion trail of the two end points, facing the other machine table, of one machine table possibly interferes with three side lines of the other machine table or not is judged; the three side lines of the other machine table are two side edge lines and a side line located between the two portal frames; and if the two machine tables may interfere with each other, the machine table executing the moving operation is controlled to decelerate until the machine table stops, and an alarm is given to the upper computer, so that the upper computer sends an avoidance instruction to the motion controller to control at least one machine table to move until the machine table leaves the interference area where interference may occur. A top software control system independent of an upper computer is arranged on a motor driving control layer and realizes quick response of an anti-collision mechanism.

The present invention relates to a train anti-collision method based on vehicle-to-vehicle communication, a device, and a storage medium. The method includes the following steps: step A: initiating, by a trackside resource controller, vehicle-to-vehicle communication based on requirements for track resource overlapping and anti-deadlock requested by different train controllers, and establishing direct vehicle-to-vehicle communication between the different train controllers; step B: directly negotiating track resources between different trains; and step C: revoking, by the trackside resource controller, the vehicle-to-vehicle communication based on a current train running state and a signal system running state, and performing request and release of the track resources between the train controller and the trackside resource controller. Compared with the prior art, the present invention has advantages of improving the utilization efficiency of track and train resources while ensuring safety.

Systems and methods for identifying potential collisions in which another vehicle may collide with the AV. The AV detects the other vehicle and determines the other vehicle speed, acceleration, and trajectory. The AV determines that there is a risk of collision if the other vehicle continues on its current trajectory at its current speed and its current acceleration. When an AV determines there is an imminent risk that another vehicle may collide with the AV, the AV can initiate a honk to alert the other vehicle of the potential collision. In some examples, the AV can identify a potential rear end collision, and the AV can honk at the vehicle approaching it from behind. In other examples, the approaching vehicle can come from any direction. Honking is designed to be limited so that an AV does not initiate too many honks.

The utility model relates to an anti-collision structure, in particular to an anti-collision structure of a laser cutting machine. Comprising a machine base, a moving table, a laser cutting head, a moving mechanism, a connecting plate, a first fixing plate, a second fixing plate, a protection plate, a fixing rod, a telescopic rod and the like. A moving table is slidably arranged on the upper side of the machine base, a laser cutting head is installed on the lower side of the moving table, a moving mechanism is arranged on the lower side of the moving table, a connecting plate is arranged on the lower side of the moving mechanism, a first fixing plate and a second fixing plate are arranged on the lower side of the connecting plate, and the first fixing plate and the second fixing plate are combined to form a protective shell. A plurality of fixing rods are arranged on the upper side and the lower side of the upper space and the lower space, the fixing rods on the upper side and the lower side are opposite pairwise, and each fixing rod is slidably connected with a telescopic rod. Through the combined design of the buffering mechanism, the pushing rod, the moving block, the telescopic rod and the first elastic piece, the buffering function can be provided when the laser cutting head is accidentally collided.

The utility model relates to the field of total stations, in particular to a total station for electric power detection. The technical problems that in the prior art, an anti-collision and dustproof mechanism capable of being rapidly disassembled and assembled is generally lacked outside a total station, a keyboard and a screen of a machine body are exposed in air during use, dust easily falls on the surface of the machine body, and the service life of the total station is affected are solved. According to the technical scheme, the total station for electric power detection comprises a total station body, the device further comprises a supporting assembly, a dustproof assembly, an anti-collision assembly, a mounting assembly and a fixing assembly. The supporting assembly is installed on the total station body, the dustproof assembly is installed on the supporting assembly, the anti-collision assembly is installed on the dustproof assembly, and then the installation assembly is inserted into the supporting assembly, or the installation assembly is inserted into the supporting assembly and the dustproof assembly at the same time. The dust-proof assembly and the anti-collision assembly can be used for better dust prevention and collision prevention of the total station body, so that the protection of the total station body is improved, and the technical problem is solved.

The invention relates to the technical field of PCB (Printed Circuit Board) carrying, in particular to an anti-collision method for an execution tail end of a PCB carrying manipulator, which comprises the following steps of: establishing a Cartesian coordinate system, dividing a rectangular area, constructing a frame model, calculating a safe operation range under the change of an R-axis angle and a Z-axis height, setting redundant parameters, correcting the size when the execution tail end is replaced, and alarming and stopping when the range is exceeded. According to the invention, additional hardware is not needed, three-dimensional accurate collision prevention and early warning are realized, the terminal size change is adapted, the equipment and the PCB are prevented from being damaged, the operation reliability and economy are improved, and the method is suitable for multi-station PCB test equipment.