80results about How to "Close distance" patented technology

An optical apparatus to be used for digital still cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a lens turret rotatable around an axis and having the lenses mounted thereon, a driving mechanism to rotate the lens turret so that one of the lenses can be set at the picture taking position and a means to adjust and extend the back focal length of the lens shaped like a column or square column and made of glass, plastic or the like that has higher refraction index than that of air. By said means of back focal length adjustment, the position of the lens with shorter focal length can be fixed on the lens turret moving apart from the image sensor like CCD or C-MOS upward without changing its focal length itself, and fixed at the same level thereon as the lens with longer focal length. With this adjustment of back focal length, the lenses can be fixed on the turret as closely as possible with each other, yet any part of one lens does not cut in or disturb any part of light path of the other lens. Consequently the total size of lens turret could be minimized.

A projection apparatus including an illumination system, a light valve, and a projection lens is provided. The illumination system provides an illumination beam. The light valve is disposed on a transmission path of the illumination beam, and is used to convert the illumination beam into an image beam. The projection lens is disposed on a transmission path of the image beam and has a lens group, and the lens group includes a plurality of lenses. A lens of the lenses closest to the light valve has an optical axis, a first edge, and a second edge. The first edge and the second edge are located on opposite sides of the optical axis, and a ratio of a distance from the first edge to the optical axis and a distance from the second edge to the optical axis is greater than or equal to 0 and less than 1.

The invention discloses an emergency cardiovascular care network system and a classification and early warning method thereof. The system comprises a doctor client, an emergency center server system and a 12 lead electrocardiogram collection module, the 12 lead electrocardiogram collection module sends collected information to a medical tablet personal computer through Bluetooth, and transmits thecollected information to the emergency center server system through a 4G wireless network, and the emergency center server system is connected with the medical client. Accordingly, electrocardiogramabnormality symptoms of patients can be classified and pre-warned according to emergencies, medical specialists are helped to judge cardiovascular diseases in the early stage, and the medical treatment time of the patients suffering from the cardiovascular diseases is greatly shortened.

The invention discloses composite additive of an automobile urea solution. The composite additive comprises one or more Gemini surface active agents mixed in any ratio, wherein the content of the Gemini surface active agents in the automobile urea solution is 10ppm to 5,000ppm. The composite additive also comprises a cosurfactant and/or an anti-foaming agent. The cosurfactant is any one or a mixture of several of direct-chain alcohol polyoxyethylene ether, branch-chain alcohol polyoxyethylene ether, aliphatic amine polyoxyethylene ether and alkylphenol polyoxyethylene ether in any ratio. The anti-foaming agent is a mixture of dimethicone and one or more of C2 to C8 in any ratio. By adopting the composite additive for the urea solution, the dispersion property of urea in the urea solution can be obviously improved, the atomizing size can be reduced, the NH3 conversion efficiency can be improved, and the blockage of an SCR (selective catalytic reaction) system can be avoided.

The invention relates to a parking and charging management and control system for an electric vehicle. The system comprises a background management and control subsystem and a mobile terminal providedwith a parking space dynamic management and control APP. The parking space dynamic management and control APP sends a parking charging request instruction, a parking space information query instruction and a parking space reservation instruction to the background management and control subsystem. The background management and control subsystem updates state information of all private parking spaces and charging piles in the area in real time, reasonably allocates optimal idle shared parking spaces in public parking lots, surrounding communities, schools and shopping malls in an area where a common electric vehicle user is located by combining the currently obtained information of the shared parking spaces in the area where a private electric vehicle user is located after a parking charging request instruction of a common electric vehicle user is received, and guides the user to the parking space for parking charging according to the parking space reservation instruction. Compared withthe prior art, the system has the advantages of expanding parking and charging sharing platform resources, improving the utilization rate of the private parking spaces and charging piles and the like.

The invention provides a coiled material conveying device and an adjusting method of the conveying device, and belongs to the field of coiled material production and processing. The coiled material conveying device includes a coiled material fixing structure, a brake locking structure and a stop structure. The coiled material fixing structure is mainly used for installing and fixing coiled materials, and synchronously rotates with the coiled materials. The coiled material fixing structure can adjust the expansion and contraction position of a tensioning component by rotating a first rotary table to meet the needs of different inner ring sizes of the different coiled materials. The brake locking structure is used for quickly braking and stopping the coiled material fixing structure. The stop structure is used for fixing a locking disc of the coiled material fixing structure and assisting the adjustment of the tensioning component at the same time.

A stochastic processor of the present invention includes a fluctuation generator configured to output an analog quantity having a fluctuation, a fluctuation difference calculation means configured to output fluctuation difference data with an output of the fluctuation generator added to analog difference between two data, a thresholding unit configured to perform thresholding on an output of the fluctuation difference calculation means to thereby generate a pulse, and a pulse detection means configured to detect the pulse output from the thresholding unit.

The invention relates to the field of sugarcane seed stem production equipment, and particularly discloses a multifunctional sugarcane seed stem detection device which comprises a conveying device, an end cutting device, a section cutting device, a curvature screening device, a bud section screening device and a feeding hopper. According to the multifunctional sugarcane seed stem detection device, the end cutting device and the section cutting device are arranged on the conveying device, end cutting and section cutting operation can be conducted on sugarcane stems respectively, and after end cutting, through the curvature screening device, sugarcane with the large stem curvature can be detected and automatically removed; after the sugarcane seed stems are cut, the bud sections of the cut sugarcane seed stems are detected through the bud section screening device, the seed stems with the bud section quality not meeting the requirement are automatically removed, manual screening and selection are not needed after the sugarcane seed stems are processed, the production quality of the sugarcane seed stems is guaranteed, and the production detection efficiency is improved.

A wireless power transfer coil system using offset of electric and magnetic coupling for frequency splitting suppression, which includes one transmitting coil, one receiving coil and four loaded annular metal sheets, is provided. A first annular metal sheet and a second annular metal sheets of the four loaded annular metal sheets are loaded between the transmitting coil and a third and a fourth annular metal sheets of the four loaded annular metal sheets are loaded between the receiving coil to expand a variable distance range of a power transmission. The coil system enables the coils to worked in a state of magnetic and electric coupling. During a process of moving from a long distance to a short distance, a coupling coefficient between the coils changes gradually, but a low coupling degree is still maintained so that a phenomenon of frequency splitting is not produced, thereby maintaining a high-efficiency power transmission within the system.

The invention discloses a differential wiring impedance matching optimization structure, which comprises a substrate; a first bonding pad and a second bonding pad which are arranged on the surface ofthe substrate; and layer changing holes which are formed in the first bonding pad and the second bonding pad and used for differential wiring, wherein the opposite sides of the first bonding pad and the second bonding pad are each provided with a notch used for reducing the hole distance between every two adjacent layer changing holes. Thus, the areas of the opposite sides of the first bonding padand the second bonding pad are cut off at the same time through the notch design, so that the distance between the layer changing holes can be shortened; and the differential cables can be close to each other when outgoing, and the differential wiring mode approaches to a long straight parallel line, so that the problem of impedance discontinuity caused by layer-changing wiring of the differential transmission cable can be avoided, the impedance matching rate of the whole differential wiring is improved, the differential signal loss is reduced, and meanwhile, the occupation of the differential wiring on the PCB wiring space can be reduced. The invention further discloses a PCB, and the beneficial effects of the PCB are as described above.

The present embodiment relates generally to the protection of life and property. More specifically, the present invention may take the form of a personal security device that provides a non-violent means to deter aggressors though novel use of ubiquitous electronic communication devices. This is accomplished by systematically collecting and preserving pertinent artifacts relevant to the crime when initiated by overt or covert queue. This application can be used in a home, retail store, building, or structure as well. If a security sensor is triggered such as a door or window sensor then the application will then collect the digital fingerprints as previously discussed. This embodiment can increase the ability of law enforcement to search and find witnesses and criminals responsible for their actions.

The invention relates to apparatus for milking animals such as cows, components of the apparatus and methods of milking animals employing the apparatus. The apparatus comprises at least two resilient membranes having a space therebetween into which the teat of the animal may be inserted. The membranes are held by a support structure under tension in a direction transverse to the direction of insertion of the teat, to protect the teat from excessive force when the membranes fall onto the teat.

A non-circular rebar used in concrete includes a square rebar, a rectangular rebar, an elliptical rebar, a trapezium rebar, a triangular rebar, and a rebar with round edges and corners. The square, rectangular, elliptical, trapezium, and triangular rebars and the rebar with round edges and corners substitute the conventional circular rebar, so that the rebars can be tied easily to save the space occupied. Since the distance of the resultant force of the tensile stresses of the rebar from the boundary of the concrete becomes smaller or the concrete protecting layer becomes thicker, the change of the shape increases the bonding between the rebar and concrete, and the safety of construction is improved. The non-circular rebar includes a smooth rebar and a ribbed rebar with a non-circular main cross-section.

The invention relates to a mechanical sliding piece translational motion type precise sowing device with an air channel seed selecting function. The precise sowing device comprises a seed selecting mechanism, a seed charging mechanism and a seed charging-discharging mechanism. The seed selecting mechanism comprises a seed cleaning part and a sorting part; a funnel of the seed cleaning part is installed on a seed cleaning rack, the bottom of the funnel is provided with a guide groove, a poking amount adjusting plate is installed in the guide groove, a fan is arranged below the poking amount adjusting plate, one end of a conveying pipe is connected with an air outlet of the fan, and the other end of the conveying pipe extends to a position above the sorting part; the sorting part comprises aplurality of stacked sorting boxes, and the bottommost sorting box is arranged above the seed charging mechanism. The seed charging mechanism comprises a mechanical translational motion driving mechanism fixedly connected with the side wall of a seed charging box, a translational motion sliding piece mechanism is arranged on the opposite side of the mechanical translational motion driving mechanism, the translational motion sliding piece mechanism comprises a U-shaped sliding groove and a supporting sliding piece which are fixedly arranged, the supporting sliding piece is horizontal, one endof the supporting sliding piece is horizontally fixed on the side wall of the seed charging box, and the other end of the supporting sliding piece can slide in the U-shaped sliding groove.

The invention discloses a manipulator of a bottle blowing machine. The manipulator comprises a fixed base, wherein three fixed columns are welded at the top end of the fixed base, the three fixed columns are arranged at the top end of the fixed base at equal intervals, and each fixed column is sleeved with a sliding block. The manipulator of the bottle blowing machine can be installed on a linearguide rail type mechanical arm through the fixed base, a bottle preform is clamped and fed with the movement and positioning of the mechanical arm, the sliding blocks can be pushed through piston rodsby starting air cylinders, the sliding blocks drive fixed rod pieces to conduct linear movement, meanwhile swing rod pieces keep swinging close to the fixed rod pieces and drive rotating rod pieces to rotate around the hinge points on fixed blocks, and thus two clamping wheels are close to each other. At the same time, because of feeding of the sliding blocks, push wheels also move and get closeto the clamping wheels, forming a triangle to clamp the bottle preform in three directions, and therefore the manipulator can be adapted to bottle preforms with different opening diameters, and the application range is wider.

A radiographic apparatus for breast examination, comprising: a detector ring having detectors for detecting radiation being arranged in an arc shape; and a shield plate for absorbing radiation that is provided as to cover a side face of the detector ring perpendicular to a central axis of the detector ring, the shield plate having a thick portion that is thick in a central axis direction and a thin portion that is thin in the central axis direction.

The invention relates to a structure for fixing stainless steel tubes in a waste gas treatment tube. The structure comprises two parallel and symmetric stainless steel plates, wherein a plurality of pairs of same and corresponding circular holes are formed in the two stainless steel plates; a stainless steel tube penetrates through each pair of corresponding circular holes, so that the stainless steel tube is vertical to each stainless steel plate; the circular holes are arranged in a plurality of horizontal rows; the distances between adjacent circular holes in each row are equal; a circular hole in the adjacent row is formed in the middle above or below a pair of adjacent circular holes in each row and the circle centers of the three circular holes are connected to form an isosceles triangle. Compared with the prior art, the structure has the beneficial effects that the structure is simple to operate, achieves maximization of the number of the stainless steel tubes placed in the limited space and improves the waste gas treatment efficiency; distances are still reserved between the adjacent stainless steel tubes, but the distances between the stainless steel tubes are compact, and thus the space is saved.

The invention discloses a metal smelting liquid recovery device based on steel smelting machining and a using method thereof, in particular to the field of steel smelting machining. The metal smelting liquid recovery device comprises a base, a supporting column, a vertical rod and a box body, a top plate is fixedly installed at the top end of the box body, a residue inlet hopper is fixedly installed at the top end of the top plate, and the bottom end of the box body communicates with a heating furnace. According to the device, a partition plate and a heat dissipation net are arranged, metal waste residues are partitioned in the residue inlet hopper through the partition plate, so that the metal waste residues rotate along with the residue inlet hopper under the condition that the metal waste residues are equally divided, the metal waste residues are not prone to adhering to one another, heat on the surfaces of the metal waste residues is dissipated through the heat dissipation net inside the residue inlet hopper, the metal waste residues meet the requirements of separation and cooling under the condition of constant-speed rotation, metal smelting liquid which is not recycled cannot adhere to the surfaces of the metal waste residues, the problem that the temperature of the waste residues just coming out of a boiler is too high, and the waste residues are prone to being adhered together under the temperature change of metal smelting liquid, namely molten steel, in the waste residues is avoided, and recovery of the metal smelting liquid is accelerated.

The invention discloses a tobacco hanging frame for baking flue-cured tobacco and a using method thereof. The tobacco hanging frame comprises two or more layers of rectangular tobacco hanging frame bodies (1), vertical supports (2) are arranged between the two layers of rectangular tobacco hanging frame bodies (1) which are arranged with one higher than the other and between the rectangular tobacco hanging frame bodies (1) and the ground, tobacco leaves with downward petioles are clamped in the rectangular tobacco hanging frame bodies (1), and insertion rods are inserted in the tobacco leaves located above the clamping faces of the rectangular tobacco hanging frame bodies (1). The tobacco hanging frame integrates the advantages of braided-tobacco baking and loose leave baking. The new tobacco containing device and an operating mode thereof are put forward, the device can finish baking tobacco leaves with the number equal to or even larger than that of loosely-baked tobacco leaves within braided tobacco baking time, the degree that labor used during braided tobacco baking is basically the same as labor used during loose leaf baking and the tobacco leaf baking quality is close to the braided tobacco baking quality can be achieved, the defects of braided tobacco baking and loose leaf baking can be well overcome if the device can be popularized in a wide range, and according to the statistics of an applicant, the per-mu income of tobacco growers can be increased by 260 RBM yuan, and cost of 300 RBM yuan can be saved.