83 results about "Back heads" patented technology

The invention provides a target tracking method and system and a staff behavior analyzing method and system. The target tracking method comprises the steps that a camera is used to acquire a video image; a front head classifier, a back head classifier, a left head classifier and a right head classifier are respectively used to detect candidate head targets in the current image; deduplication and screening are carried out on the candidate head targets detected by the classifiers; head targets which does not meet a tracking condition are deleted; and the remaining head targets are respectively tracked. The technical problems of false positives, false negatives, difficulty tracking and high camera erection requirement, which are caused by easily being blocked, difficulty target classification and the like, of a staff detection and tracking method based on face detection, head and shoulder detection or whole body detection are solved. According to the invention, accurate staff track tracking can be carried out based on the head targets; the problem of target restating can be reduced; and staff behavior analyzing can be carried out based on tracking results.

A system and a method for protecting the head of a user in case of an abnormal movement, such as a fall or a collision. The system comprises an apparel (1), an airbag (2), an inflator (3), and a trigger. The airbag includes a first part (7) for surrounding the neck and back head portion of the user after inflation, and a second part (8) for forming a hood surrounding the skull of the user after inflation. The first part (7) and second part (8) are folded and arranged in the apparel (1) before inflation. The apparel is arranged around the neck of the user, like for example a collar or a scarf.

An optical fiber connector consists of a base and three V-shape slots fixed on the base, which is used for containing reference optical fiber and tested optical fiber. Three concave plates with a concave surface oriented to the front head face of the base are fixed on the base, the rear part of a pressure pad is inserted into the concave positions of the concave plates, and the concave plates and the pressure pad are connected by three axes running through the right side of the concave plates. The pressure pad is provided with screwed holes, and the pressure pad, a spring, and a pressure block are connected together by bolts, the optical fiber is tightly pressed at the lower end surface of the pressure pad. A front nest pin and a back nest pin respectively screwed in the screwed holes in the front and back head faces of the base are used for adjusting the travel route of the pressure pad. The optical fiber connector is characterized by rapid connection, long service life, easy maintenance, and reliably fixing the tested optical fiber.

The present invention relates to a gas mask comprising: a rubber material face mask, which is worn on the face for protecting the face against toxic substances, and which includes a purification container connection hole to which a purification container is connected, a lens hole in which a lens is installed, an exhaust hole in which an exhaust unit for exhausting inside air is installed, and a hook which protrudes toward a back direction; a buckle onto one side of which the hook on the face mask is coupled so as to be separable; a back head cover, which comprises a coupling lace which is coupled to the other side of the buckle so as to be separable, for covering the back head of the wearer by connecting to the back side of the face mask by means of the buckle when the coupling lace is coupled to the buckle; a headscarf, which is provided with an exposure hole through which the front surface of the face mask provided with the connection hole, the lens hole, and the exhaust hole, is exposed, wherein the periphery of the exposure hole is connected to the edge of the front surface of the face mask to shield the head portion of the wearer; and a connector for partially connecting the periphery of the exposure hole, which is formed on the headscarf, to the face mask. In the present invention, the periphery of the exposure hole, which is formed on the headscarf, is connected to the face mask by means of the connector so that the headscarf is securely and quickly connected to the face mask, thereby protecting the head of the wearer from toxic substances.

Disclosed is a sanitary mask for hygienically protecting others that can be conveniently re-used and has a simple structure firmly maintained while the sanitary mask is used, so as to surely achieve the purpose of the sanitary mask, by molding the overall frame of plastics and improving the structure from a structure of preceding Korean Patent Application No. 10-2007-111003, which was filed by the inventor(s) of the present invention before the filing of the present patent application. The sanitary mask for hygienically protecting other people by blocking unsanitary substances provided by respiratory organs including a mouth and a nose of a user from spreading to and contaminating a clean object while exposing the respiratory organs comprising: a lower body molded in a curved shape, i.e., a ‘U’ shape, and including supporters to be hung on the ears of the user or to be wound around a back head of the user at the ends of both sides of the lower body; and a respiratory organ front cover configured to be inclined upward from an upper portion of a front portion of the lower body and cover a front portion of an area around the respiratory organs of the user to thereby expose the respiratory organs of the user.

The invention discloses an automatic pipe laying machine. The automatic pipe laying machine consists of four main structures: a flexible pipe jacking and loading mechanism, a belt conveyor line mechanism, a front head and back head distinguishing mechanism and a rotary translation mechanism. According to the automatic pipe laying machine, manual operation is replaced, and a series of actions of automatic pipe trimming, automatic pipe feeding, automatic pipe turning and automatic pipe laying are realized. In this way, automatic continuous production can be realized, and a worker can operate and keep an eye on several pieces of equipment, so that the labor cost is remarkably reduced; and the automatic pipe laying machine has the characteristics of being wide in application range, simple and convenient to operate, high in efficiency and stable in operation.

A long sleeved upper torso hooded garment which is worn by a user and comprising a detachable hood, the detachable hood including a top head portion, two opposed lateral portions, a back head portion, wherein there is a natural pocket portion in the back head portion of hood, above the hem or elastic neckline member, giving the natural pocket portion the ability to accommodate at least some of a user's loose hair; a front head opening portion, and a neck portion circumferentially extending around user's neck, the hood including a circumventing channel that encloses a drawstring at the edge of facial opening which is used to decrease the size of the facial opening, the upper torso portion of garment includes four openings, the two opposed lateral portions for allowing the users arms to pass through ending at the wrists' opening, the top opening for connecting the torso piece to the base of hood piece, and the bottom largest opening in which the user places the head, arms, and upper torso through to put on, or take off garment.

An improved perpendicular magnetic recording medium and an improved magnetic storage apparatus are provided, which are suitable for high speed and high density magnetic recording. A magnetic under layer of a two-layered perpendicular magnetic recording medium includes three layers: a ferromagnetic layer; a non-magnetic layer; and a ferromagnetic layer, wherein the ferromagnetic layers are antiferromagnetically coupled with each other, thereby preventing a magnetic flux from a magnetic wall in a magnetic under layer from entering a read back head.

The invention provides a headrest for a dental treatment chair and a dental treatment chair wherein discomfort due to noise generated from dental treatment instruments can be reduced and communication between a dentist and a patient can be ensured.

The headrest for the dental treatment chair and the dental treatment chair comprise a back head supporting member 91 for supporting a back of the head of the patient during dental treatment and ear supporting members 92 and 92 which can be bent in directions to cover ears of the patient at both ends of the back head supporting member 91. The ear supporting members 92 and 92 or the back head supporting member 91 has sound output sections 93 and 93 each for outputting a sound from a sound source, and the ear supporting members 92 and 92 have a sound collecting section 94 for collecting sounds in a surrounding environment. Acoustic filters 95 and 95 cut off frequencies higher than 8 kHz from a sound signal collected by the sound collecting section 94.

The present invention relates to a health pillow capable of correcting a body shape, the health pillow comprising: a pillow body including a back head seating part recessed downward, on which a back head of a user lying down straight is seated, the back head seating part being disposed between a pair of, left and right, side head seating parts on which a side head of a user lying on his/her side is seated, and a cervical vertebrae support which is disposed in a front end of the back head seating part, is convex upwardly, and upwardly supports a cervical vertebrae of a user lying straight; and a back supporting body provided in front of the pillow body to allow a back of a user lying straight to be seated thereon, and including a thoracic vertebrae supporting part which has a convex shape at a central portion thereof, and upwardly supports an upper thoracic vertebrae of a user lying down straight. According to the present invention, by supporting the cervical vertebrae and the upper thoracic vertebrae to allow a user to have a good posture, a straightening neck and a swayback may be corrected and a comfortable posture may be maintained without stiffening a neck and shoulders, thereby providing an optimized sleep effect.

A head structure of flak knitting machine features that on the base plate of its front and back heads there are central jacquard cam, fixing cam, needle raising cam, big knit cam, leaf and right herringbone cams, return cam, movable kit cam and regulation mechanism for generating different densities and varying pattern.

The invention discloses a driver face characteristic distance correction method based on a facial expression fatigue driving detection algorithm. The method comprises: when a driver shakes up and downand shakes the head or tilts the head leftwards and rightwards, the actual value of the transverse or longitudinal feature distance between the mouth and eyes is derived by changing the included angle between the transverse or longitudinal feature line segments of the mouth and the eyes and the positive direction of the camera; a right hand space rectangular coordinate system is established withthe head of the driver as the center, the x-axis direction is the left ear pointing to the right ear, the y-axis direction is the head pointing direction, and the z-axis direction is the forehead pointing to the back head spoon. The rotation angles of the head on the three coordinate axes are obtained; wherein the pitch angle yaw represents the angle of rotation of the head of the driver around the y axis, the yaw angle pitch represents the distance of rotation of the head of the driver around the x axis, and the roll angle roll represents the angle of rotation of the head of the driver aroundthe z axis, namely the Euler angle of the head of the driver in the three-dimensional space. The obtained Euler angle is used for correcting the characteristic distance, so that the driver facial expression fatigue driving detection accuracy and precision are improved.

The invention provides a self-luminous projection display system and a micro-display full-color optical machine. The self-luminous projection display system comprises a plurality of light-emitting units used for emitting light of different colors and an optical light-combining unit arranged on a light path of a light beam emitted by each light-emitting unit, wherein the light emitted by the plurality of light-emitting units is combined and emitted to the outside in the same direction. The self-luminous projection display system of the invention has the beneficial effects that the light-emitting units are adopted to directly emit light with different colors, and the light beams emitted by the light-emitting units are combined by the optical light-combining units and emitted along the same direction, thus the design of the traditional back head reflection type projection light path is changed, a self-luminous projection mode is realized, the light path structure is simplified, and the volume is reduced.

The invention discloses a stationary fixture for pelvis biomechanics experiment. The fixture is connected to a mechanical testing machine by a base. A first anterior superior iliac spine baffle and asecond anterior superior iliac spine baffle of the fixture are respectively connected to a pubic tubercle baffle by a first sacrum stationary jaw and a second sacrum stationary jaw. A top tray of upper margin of pubic bone and a bottom board of lower margin of pubic bone are respectively vertically connected to the pubic tubercle baffle. The first sacrum stationary jaw and the second sacrum stationary jaw are connected to the top tray of upper margin of pubic bone. A sacrum fixing cross slab is fixed on the first sacrum stationary jaw and the second sacrum stationary jaw. A connecting rod is arranged on the lower surface of the top tray of upper margin of pubic bone. A back head of pubic bone is horizontally connected to the connecting rod. The lower head of pubic bone is vertically drilled through the bottom board of lower margin of pubic bone. With the fixture of the invention, the pelvis can be fixed by taking a standing posture to do experiment, and the substance of bone and the structure of pelvic are not destroyed by assembling or detaching the fixture.

An ultrasound stimulation helmet (100) configured to regulate an endogenous neurotrophic factor in a brain or expression of proteins related to a neurodegenerative disease comprises: a main body (1) having a forehead perimeter adjustment knob (12), a back head perimeter adjustment knob (13), a fastening support frame (14), and multiple position adjustment knobs (15); and multiple ultrasound probes (2) detachably mounted on the main body (1), wherein the ultrasound probe (2) has a frequency adjustment button and an intensity adjustment button to respectively control an output frequency and output intensity of the ultrasound probe (2), and other ultrasound parameters and an angle of the ultrasound probe (2) itself are adjustable as well. The fastening support frame (14) can be used to adjust the length of the main body (1) according to the size of a head of a patient, and the ultrasound probes (2) are connected to the position adjustment knobs (15) to enable the ultrasound probes (2) to move upward, downward, or toward the left or right with respect to the head of the patient.

Disclosed herein is a pneumatic operated hammer for rock drilling, the hammer comprising a cylindrical casing, a back head mounted at an upper portion of the casing, a check valve for opening/closing a compressed air passageway in the casing, a guide for supporting the check valve, a piston adapted to ascend and descend with compressed air in the casing, and a button bit for performing a drilling work through the striking of the piston. The piston is extended to a certain length to conform to the work condition of the pneumatic hammer to thereby prevent a water back-flow phenomenon in which underground water, etc., is introduced into the drilling equipment during the drilling work, compressed air passageways and variable compressed air chambers are formed between the piston and the casing so that when the piston ascends by the compressed air, it abruptly ascends at a load-free state, and the piston has axial portions with a reference diameter and different outer diameters so that it is possible to manufacture a hammer bit having a plurality of variable compressed air chambers formed between the casing the piston to fit for the work capacity. The piston ascended in a load-free state strikes the button bit with its rapid and strong striking force produced by the compressed air supplied from the variable chambers while abruptly descending to thereby perform the drilling work.