288results about How to "Avoid collision situations" patented technology

The invention discloses a multi-rotor-wing submersible unmanned aerial vehicle and a control method thereof. The unmanned aerial vehicle comprises a machine body and a plurality of rotor wing arms which are arranged on the machine body and are symmetrically distributed, wherein a rotor wing assembly is arranged at one end, far away from the machine body, of each rotor wing arm; a pair of undercarriages are symmetrically mounted at the bottom of the machine body; airbags cover the undercarriages; the machine body is internally provided with a processor, a power supply module, a wireless communication module, a compressed air storage device and a control valve; and a gas output end of the compressed air storage device is connected with the airbags by the control valve. The method comprises an aerial mode and an underwater mode. According to the multi-rotor-wing submersible unmanned aerial vehicle, the snorkeling condition in water can be effectively controlled by controlling the compressed air storage device to inflate the airbags, so that the aerial and underwater barrier-free navigation is realized, and the problem that the unmanned aerial vehicle accidently falls into water to be damaged in a flying process is effectively solved. The multi-rotor-wing submersible unmanned aerial vehicle can be widely applied to the field of unmanned aerial vehicles.

An intelligent external inspection and maintenance vehicle for a rail beam of suspension monorail transit aims to achieve the automatization, informatization and intellectualization of the external fault and defect inspection of the rail beam and provide working conditions for inspection and maintenance. The intelligent external inspection and maintenance vehicle comprises a vehicle body, a driving unit, an intelligent detection unit, a vehicle-driving control unit and a safety protection unit, wherein the driving unit consists of a power battery and suspension bogies; a suspension monorail beam inspection and maintenance platform is arranged at the rear part of the vehicle body; the vehicle body is equipped with sensor lifting and lowering supports, contour detectors, a lifting and lowering fence translational track, an inspection and maintenance work lifting and lowering platform, gauge detection laser sensors and corrosion detection cameras; the suspension monorail beam inspection and maintenance platform can move horizontally and vertically on the lifting and lowering fence translational track; the motion range of the suspension monorail beam inspection and maintenance platformcovers the left, right and lower sides of the rail beam for providing an inspection and maintenance platform capable of moving horizontally and vertically at the external of the rail beam; the contour detectors and the corrosion detection cameras of an intelligent detection system are mounted at the sensor lifting and lowering supports which is capable of moving vertically on both sides of the middle part of the vehicle body; the corrosion detection cameras are mounted at the outer side of the middle of the sensor lifting and lowering supports; and the contour detectors are mounted at the inner side of the middle and top of the sensor lifting and lowering supports.

The invention discloses a display device, a rotation method, device and system of the display device and a wall hanging support. The method comprises the steps of receiving a rotation instruction, wherein the rotation instruction is used for controlling the wall hanging support to drive the display device to rotate; judging whether a space where the display device is located allows the display device to rotate therein; and under the condition that the space where the display device is located allows the display device to rotate therein, controlling the wall hanging support according to the rotation command to drive the display device to rotate. The invention solves the technical problem that in the prior art, a display device can only rotate depending on the manual mode, and consequently equipment control is inconvenient.

The invention discloses a three-stage platform carrying structure of a wrecker. The three-stage platform carrying structure comprises a first stage large platform, a second stage small platform and a third stage small platform. The tail end of the first stage large platform is hinged to the connecting end of the second stage small platform and the connecting end of the third stage small platform. A groove type slideway of the first stage large platform, a groove type slideway of the second stage small platform, a groove type slideway of the third stage small platform and a rectangular longitudinal beam guide rail of an auxiliary wrecker frame are slidably connected with one another in a matched and embedded mode. A platform derricking oil cylinder is arranged between the auxiliary wrecker frame and a chassis longitudinal beam below. The tail portion of the chassis longitudinal beam is hinged to the bottom side of the auxiliary wrecker frame. A supporting leg is arranged at the bottom of the tail end of the auxiliary wrecker frame. The bottom of the first stage large platform and the front end of the auxiliary wrecker frame are each provided with a platform telescopic oil cylinder hinge point connected with a platform telescopic oil cylinder. Through telescoping motion of the platform telescopic oil cylinder, the first stage large platform, the second stage small platform and the third stage small platform are made to slide longitudinally, stretch backwards and slide to working positions in sequence in an inclined state. The inclination angles between the three platforms and the ground after the three platforms slide backwards and downwards to the working positions are A, B and C correspondingly, and A>B>C.

The invention discloses an anti-collision system and method for ship loaders. The system comprises a cantilever crane projection length measuring device, a ship loader interval measuring device and a control device, wherein the cantilever crane projection length measuring device is used for determining the projection length of a cantilever crane of a ship loader on a track where the ship loader travels; the ship loader interval measuring device is used for determining the distance between the ship loader and an adjacent ship loader which travels on the track and is in front of the ship loader; and the control device is used for calculating the absolute collision distance between the two adjacent ship loaders according to the projection length and the distance, and giving an alarm or controlling the ship loaders to stop operating according to the absolute collision distance. By means of the technical scheme, the security coefficient of the ship loaders in the operation process is greatly increased, and the situation that the ship loaders collide due to misoperation of operators or lacking of monitoring by supervisors is avoided.

The invention discloses a method and device for determining a moving trajectory, a mobile robot and a storage medium. The method includes the following steps: acquiring scan information within a set distance range of the mobile robot; determining current relative position information of a narrow channel boundary and the mobile robot according to the scan information, wherein the width difference between the narrow channel and the mobile robot is less than a fixed width threshold; and determining a moving trajectory of the mobile robot according to the current relative position information to achieve that the mobile robot passes through the narrow channel. In the embodiment of the invention, by adopting the above technical scheme, the moving trajectory of the mobile robot can be determinedaccording to the relative position of the mobile robot and the narrow channel boundary, the planning accuracy of the moving trajectory can be improved, and the occurrence of the situation that the mobile robot shakes right and left when passing through the narrow channel can be avoided so as to ensure that mobile robot can safely pass through the narrow channel.

The invention discloses a remote control safety tower crane based on a point position coordinate and a hoisting method of the remote control safety tower crane. The remote control safety tower crane comprises an aerial photography device, a wireless transmitter and receiver, a remote controller, a central controller, an alarm device, a display device and a tower crane collision prevention pre-warning system, wherein the aerial photography device is located at the tip of a tower crane body, and is sequentially connected with the remote controller and the central controller in a cab of the tower crane body through the wireless transmitter and receiver; the central controller is also connected with the alarm device, a motor of the tower crane body and the tower crane collision prevention pre-warning system; the tower crane collision prevention pre-warning system comprises a safety distance measurement system which is connected with the central controller; and the safety distance measurement system is sequentially connected with an ultrasonic probe, a temperature sensor and a humidity sensor through wireless signals. The hoisting method is simple to operate; tower crane operating personnel has the scientific basis when operating the tower crane due to an intelligent operation; and the relatively normative and scientific operation can be carried out.

The invention provides a lake surface floating algae removing and fishing device, and relates to the field of fresh water purification. The lake surface floating algae removing and fishing device comprises a rectangular frame body, foam floating blocks are fixedly connected to the bottom of the rectangular frame body, and the bottom of the rectangular frame body is provided with a fishing groove;the back portion of the rectangular frame body is provided with an elliptical slot, and the elliptical slot is internally provided with an elliptical block; a fishing mechanism is fixedly connected tothe back portion of the rectangular frame body, and scraping devices are arranged between the elliptical slot and the elliptical block; a transmission device is connected to the fishing mechanism, and a centrifugal mechanism is arranged at the back portion of the rectangular frame body. According to the lake surface floating algae removing and fishing device, fishing and filtering plates can fishalgae in water and have a water filtering function, the water can be discharged while the algae is collected, the problem of excessive water content of fished algae is effectively solved, and the fishing effect is improved.