282results about How to "Expand the shooting range" patented technology

The invention discloses a remote monitoring device and monitoring method based on a 5G network environment, and belongs to the technical field of monitoring devices, the remote monitoring device comprises a bottom plate, a top plate and a rack, the lower surface of the top plate is fixedly connected to the upper surface of the bottom plate through a side plate, and a first adjusting mechanism is arranged between the top plate and the side plate; the number of the first adjusting mechanisms is two. According to the invention, the rack, the second adjusting mechanism and the fixed shell are arranged, and the second adjusting mechanism can move randomly under the cooperation of the rack during working, so that the fixed shell can be driven to move along the rack, the position of the camera can be effectively changed, and the shooting range of the camera is greatly improved; by arranging a first linear actuator, if fixed-point shooting of the camera is needed without affecting movement ofthe camera, the second electric push rod is controlled to extend to drive the camera to move to a high position, the first bevel gear and the second bevel gear are separated, and therefore the cameracannot be driven to rotate for shooting even if the fixing shell moves.

The invention discloses a hand-eye calibration and coordinate conversion method. The method comprises the steps that a target is arranged at the tail end of a mechanical arm; the tail end of the mechanical arm is controlled to move from the initial coordinate point to the terminal point coordinate point, in the process that the tail end of the mechanical arm moves from the initial coordinate pointto the end point coordinate point, the n-time targets of the three-dimensional coordinates in a camera coordinate system and the three-dimensional coordinates of a machine arm coordinate system are recorded, coordinates of the n groups of targets under the camera coordinate system and coordinates of the machine arm coordinate system are obtained, the coordinates of the target under the camera coordinate system and the dimensional coordinates of the machine arm coordinate system are substituted into a mapping matrix between the camera coordinate system and the machine arm coordinate system tosolve the mapping matrix, and n groups of fitting points are obtained; a residual graph is drawn according to the n groups of initial fitting points, the m groups of outlier points in the n groups ofinitial fitting points are removed, and the n-m groups of target fitting points are substituted into a mapping matrix between the camera coordinate system and the machine arm coordinate system, so that a matrix transformation relation between the camera coordinate system and the mechanical arm coordinate system can be obtained.

The invention provides a liquid crystal display device. The liquid crystal display device comprises a liquid crystal panel, wherein the liquid crystal panel comprises a quantum dot color pixel layer, an upper polarizer, a liquid crystal switch unit and a lower polarizer which are sequentially stacked; the quantum dot color pixel layer comprises a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit. The display device further comprises a backlight module arranged under the liquid crystal panel, the backlight module comprises a back plate and a light-emitting device arranged on the back plate, and the light-emitting device comprises an LED light-emitting device and an optical collimating device arranged above the LED light-emitting device. The optical collimating device is arranged above the LED light-emitting device according to the Lagrange-Helmholtz invariant, so that the light-emitting aperture is increased, then the light emitting angle of backlight is reduced, light rays can be collimated and emitted to a certain degree, and therefore the problem of color crosstalk between pixels due to large backlight emitting angles when the liquid crystal panel displays images is solved.

The invention discloses a laparoscope with a liquid sucking function and with extension and retraction convenient to adjust. The laparoscope comprises a handle and a control device, a locating block is connected to the handle in a sliding mode, a rod body is arranged in the handle, a camera device is connected to the end, away from the handle, of the rod body in a rotating mode, a wire is arrangedat the end, away from the rod body, of the handle, and the handle is electrically connected with the control device through the wire; a liquid accumulation device is fixedly connected to the handle,a liquid accumulation cavity is formed in the liquid accumulation device, the liquid accumulation cavity is communicated with a liquid sucking pipe, and the liquid sucking pipe is fixedly connected with the handle; a piston is arranged in the liquid accumulation cavity, the piston is connected with a limiting block through a piston rod, and the limiting block penetrates the liquid accumulation device and extends to the handle. According to the laparoscope, the structure is stable, and the shooting angle of the camera device can be adjusted, so that the shooting range is increased; extension and retraction of the rod body can be adjusted, and the rod body can go deeply into an abdominal cavity, so that use is more flexible; the laparoscope is provided with the liquid accumulation device, and waste liquid influencing observation in the abdominal cavity can be discharged.

The invention provides an automobile experiment teaching and demonstration platform. The platform comprises an experiment table body, an operation platform is arranged at the top of the experiment table body; a lifting device is arranged between the operation platform and the experiment table body; a shielding protection device is arranged between each side of the operation platform and the experiment table body; a panoramic camera and a tracking camera are also arranged on the operation platform; an adjusting device is arranged between the panoramic camera and the operation platform; a tracking adjusting device is arranged between the tracking camera and the operation platform; the experiment table body is also provided with a central processor, a wireless transmission module, a focus control unit, a lifting control unit, a tracking control unit and an image processing unit which are connected together, the wireless transmission module is connected with a control bracelet, a signal generator is arranged in the control bracelet, and the image processing unit is connected with the panoramic camera, the tracking camera and a projector. The platform has the advantages of being adjustable in height, high in use safety and good in teaching and demonstration effect.