6 results about "Weightlessness" patented technology

The utility model discloses an overweight and weightlessness visual demonstration teaching aid which comprises a base, a lifting frame and a pulley mounting frame, and the base, the lifting frame and the pulley mounting frame are all made of aluminum strips and are all arranged in a hollowed-out mode. According to the demonstration teaching aid, the intelligent displays are arranged at the two ends of the base, force-time oscillogram of overweight and weightlessness can be displayed at the same time, overweight and weightlessness experiments do not need to be demonstrated separately, students can visually observe the weightlessness and overweight phenomena, and exploration and verification of physical laws are facilitated; the hollow cube-shaped movable box body is arranged, so that life experience and experimental phenomena are combined, and the understanding of physical laws is deepened; a lifting guide rail is arranged on the movable box body, so that stable lifting of the movable box body is ensured, and the accuracy of experimental numbers is ensured; in addition, the demonstration teaching aid is closed, and the supporting frame is made of aluminum strips and is hollowed out, so that the movable box body is stable and does not shake during an experiment, and the demonstration teaching aid is light and convenient to carry.

The invention belongs to the technical field of tumble detection, and provides a tumble detection system and method, equipment and a medium, the system comprises a weightlessness impact motion monitoring module used for calculating weightlessness motion characteristics and impact motion characteristics of wearable equipment, and a rotation motion monitoring module used for running in parallel with the weightlessness impact motion monitoring module and monitoring the rotation motion of the wearable equipment. Calculating a rotation motion feature of the wearable device; and the tumble detection module is used for calculating to obtain a tumble detection result of the user according to the weightlessness motion feature, the impact motion feature and the rotation motion feature. According to the invention, through parallel calculation of the weightlessness motion feature, the impact motion feature and the rotation motion feature, the falling detection is carried out by using the specific'weightlessness-impact-rotation 'multi-mode continuous motion feature in the falling event, so that the real falling and the activities only containing part of violent actions in the daily life can be accurately distinguished; and the accuracy and the reliability of fall detection are obviously improved.

The application discloses a kind of to be suitable for multiple-specification large-size lens weightlessness detection clamping device, including installation base, azimuth component, pitch component, mirror chamber, adjustable back support component, adjustable mirror body anti-falling component, adjustable weight component.The application can be applied to the clamping of large-aperture mirror of different aperture, different thickness and different weight by the mutual cooperation of each component, solve the problem that large-aperture mirror body clamping of different specifications and models needs specially designed corresponding fixture;Gravity is unloaded to large-aperture mirror by weight component, eliminate the surface shape error of mirror surface shape precision caused by its own gravity, realize large-aperture mirror body gravity-free high-precision surface shape detection;Through the combined use of azimuth component and pitch component, the pitch rotation and azimuth rotation of multiple-specification large-aperture mirror body in the process of installation and detection are realized;In the process of installation and detection, one-time clamping can be realized, and surface shape detection under each working condition of mirror body is solved.

An object that can be stabilized while freely floating in space, in particular a space object, with an object-side, first attitude control device (L1) for controlling the attitude of the object (1, 1', 1") having an object center of gravity (So) in weightlessness or in free fall, wherein the object (1, 1', 1") is coupled to an external object extension device (2) that can be moved independently in space, is characterized in that the external object extension device (2) is provided with a second attitude control device (L2) that can be moved relative to the object (1, 1', 1").

The utility model belongs to the technical field of material conveying, and relates to a solid bulk material weightlessness weighing device, which comprises a rack, and a feeding unit, a weighing unit and a conveying unit which are arranged on the rack, a quantifying unit is arranged between the feeding unit and the weighing unit, the weighing unit comprises a plurality of weight sensors which are arranged at intervals, and the conveying unit is arranged on the rack. A discharging gate plate is arranged between the weighing unit and the conveying unit and can control the weighing unit to unload materials to the conveying unit or not under the action of a driving piece of the discharging gate plate. According to the utility model, solid bulk materials can be automatically fed, weighed and discharged and conveyed, the materials can be conveyed to a designated area for downstream equipment to use, continuous metering can be realized, the discharging weight can be accurately controlled, the metering device has the advantages of high precision, good metering stability and the like, and the requirements of continuous and automatic feeding and discharging, sanitation, cleanness and the like can be met.

An object which can be stabilized while freely floating in space, in particular a space object, with an object-side, first attitude control device (L1) for controlling the attitude of the object (1, 1', 1") having an object center of gravity (So) in weightlessness or in free fall, wherein the object (1, 1', 1") is coupled to an external object extension device (2) which can be moved independently in space, is characterized in that the external object extension device (2) is provided with a second attitude control device (L2) which can be moved relative to the object (1, 1', 1").