73 results about "Collision prevention" patented technology

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 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.

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

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 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 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.

The utility model discloses a high-fidelity digital audio player. A heat dissipation protective sleeve is arranged at the bottom of a player body of the player. Operation buttons and a display screen are arranged on the upper surface of the player body, a central processor and other components are installed in the player body, and a communication interface is arranged at the rear end. A heat dissipation rear shell of the heat dissipation protective sleeve is composed of an inner side heat conduction plate, fins and an outer side rubber shell, the fins divide the middle section space into heat dissipation cavities, and the cavities in the left side and the right side are filled with silica gel strips for collision prevention and protection. And the inner heat-conducting plate is connected with the player body through an adhesive and heat-conducting silicone grease, so that heat dissipation is facilitated. Bumps are distributed on the inner side of a U-shaped plastic strip of the pocket clip in a staggered mode, the pocket clip can be clamped into pocket openings of trousers or shirts, friction force is increased, and slipping is prevented. According to the design, heat dissipation, collision prevention and portability are considered, and the requirements of users for high-fidelity audio playing and daily use can be met.

The application relates to the related field of sweeping robots, and discloses a sweeping robot and a collision prevention method, the sweeping robot comprising: a body, a control unit and a power unit arranged in the body; a collision prevention detection unit for monitoring the state of the sweeping robot, the collision prevention detection unit being arranged at the front end edge of the body; a walking unit and a cleaning unit located at the bottom of the body; wherein the control unit is connected with the collision prevention detection unit, the walking unit and the cleaning unit respectively, and the control unit is responsible for controlling the robot body to execute corresponding different working modes according to different states of the robot; the application detects different states of the robot through the collision prevention detection unit, executes different working modes, so that the robot has the function of making the most appropriate response according to different collision conditions, avoids low working efficiency caused by frequent retreat, and improves the working efficiency of the sweeping robot.

The following descriptions relate to an elevator system (1) comprising an elevator shaft (2), a first car (3.1) movable in the elevator shaft (2) with a first brake (9, 10.1) for locking the first car (3.1), a monitoring device (12) for detecting a first state variable of the first car (3.1), a collision prevention device (14) for triggering the at least one first brake (9, 10.1) based on the detected first state variable and a first trigger curve, and a safety device (15) for braking the first car (3.1), wherein the safety device (15) is configured to trigger based on the detected first state variable, thus preventing the collision prevention device (15) from being triggered. The following descriptions further relate to a method (20) for operating such an elevator system (1).

To provide a collision prevention device or the like that improves safety during work and suppresses a decrease in work efficiency in a work machine.SOLUTION: A collision prevention device 100 comprises a machine motion calculation unit 110 that calculates the position and velocity vector of a work machine 200, a detection target motion calculation unit 120 that calculates the position and velocity vector of a detection target, a region calculation unit 130 that calculates a motion restriction region positioned around the work machine 200 based on the position and velocity vector of the work machine 200, a determination unit 140 that determines whether or not to cause the work machine 200 to perform an anti-collision operation for preventing collision between the work machine 200 and the detection target, based on the position and velocity vector of the detection target and the motion restriction area, and a motion restriction control unit 150 causes the work machine 200 to perform a collision prevention operation when the determination unit 140 determines that the work machine 200 is to perform the collision prevention operation.SELECTED DRAWING: Figure 2

The present invention discloses a grinding anti-collision prevention device, comprising a grinding wheel and a mounting housing that is mounted on the outside of the grinding wheel, a protective assembly being mounted inside the mounting housing; a grinding wheel cleaning assembly being fixedly mounted on both the left and right ends of the mounting housing; the protective assembly comprising a protective ring and four airbag adjustment mechanisms uniformly distributed on the lower circumferential surface of the protective ring; the grinding wheel cleaning assembly comprising a rotating mechanism and a cleaning mechanism located at the left end of the rotating mechanism, with the grinding wheel located between the two cleaning mechanisms. The present invention provides a grinding anti-collision prevention device, which provides protection for the grinding wheel by disposing a protective assembly on the outside of the grinding wheel, using an observer to observe the grinding wheel in operation, and cooperating with the protective assembly; and the grinding wheel cleaning assembly allows for prompt cleaning of the grinding wheel after use, facilitating subsequent use.

Disclosed in the present invention are a cover panel control method and apparatus, and a device and a storage medium, which are used for improving the accuracy of collision prevention of a split tailgate of a vehicle. In the present application, after a first control trigger operation triggered by a user is received, angle information respectively corresponding to two cover panels of a vehicle is acquired, matching is then performed on the basis of the angle information respectively corresponding to the two cover panels and the first control trigger operation, so as to obtain a corresponding control instruction, and a first cover panel and / or a second cover panel are controlled on the basis of the control instruction obtained by means of matching. In the present application, different control instructions are respectively set for different angle information and control trigger operations, and thus various states of a vehicle tailgate can be encompassed, such that the control of the vehicle tailgate is simpler; moreover, different control instructions are set to implement different control, such that control operations are more flexible.

The invention relates to the technical field of robots, and particularly discloses a mobile robot adopting an anti-collision structure, the mobile robot comprises a shell, one side of the inner wall of the shell is fixedly connected with a steering system, one side of the inner wall of the shell is fixedly connected with a driving system, and the steering system and the driving system are both fixedly connected with rotating wheels; one side of the shell is connected with a cart through a buckle, the top of the shell is fixedly connected with an assembling box, the top of the assembling box is fixedly connected with a fixing rod, the top of the fixing rod is fixedly connected with an anti-falling device, the top of the assembling box is fixedly connected with a mechanical arm, and one side of the top of the assembling box is fixedly connected with a fixing plate. And one side of the fixing plate is fixedly connected with an integrated system, the side, away from the fixing plate, of the integrated system is fixedly connected with a camera, and the bottom of the integrated system and the bottom of the camera are both fixedly connected with the assembly box. The mobile robot adopting the anti-collision structure achieves the purpose of effectively preventing collision.

The invention provides an anti-collision method and device, equipment and a storage medium, and the method comprises the steps: responding to the condition that the output of N magnetic induction devices meets a first preset condition, determining the adsorption position of an external keyboard on a first display screen based on the relative positions of the N magnetic induction devices and the first display screen, and N is an integer greater than 0; a locking angle threshold value corresponding to the adsorption position is determined according to the preset corresponding relation between the position and the locking angle; in response to the fact that the first included angle is smaller than or equal to the locking angle threshold value, the locking device is controlled to be locked so as to prevent the first display screen and the second display screen from being closed, and the first included angle is the included angle between the first display screen and the second display screen. When the double-screen included angle is smaller than the threshold value corresponding to the adsorption position of the keyboard, the first display screen and the second display screen are prevented from being closed based on the locking device, and the potential safety hazard that the keyboard and the display screens are likely to collide when the double-screen notebook computer is closed is solved.

The collision prevention device and collision prevention method according to the embodiments of the present disclosure can prevent collisions between a vehicle and an object on which the collision prevention device is installed by receiving a signal output from an object detection device mounted on a vehicle traveling on a road, and generating and transmitting a virtual reflected signal that is different from the actual reflected signal of the received signal based on the received signal and the virtual driving speed.