60results about How to "Easy to use and accurate" patented technology

Disclosed herein are portable handheld devices for saliva collection for daily monitoring of salivary biomarkers of physiological conditions, the device comprising: a handheld handle comprising a saliva collector, the saliva collector comprising: a suction tip; a bi-directional pump electrically configurable for pumping towards two opposite directions; a saliva reservoir; a valve; a water reservoir, the water reservoir comprising an external filling lid; a reversible fluidic connection configurable in a connected and disconnected position; and a base accommodating the handheld handle, the base configurable to fluidly communicate with the handheld handle through at least the reversible fluidic connection, wherein the valve is electrically configured to allow fluid communication directly between at least two selected from: the saliva reservoir, the water reservoir, and the reversible fluidic connection, and wherein the bi-directional pump is electrically configurable to allow fluid communication directly between the suction tip and the saliva reservoir.

The invention discloses a gallery-type water pollution early-warning device which comprises a gallery-type fish tank, a bracket and a camera, wherein the bracket is arranged on the side edge of the gallery-type fish tank; the camera is arranged on the bracket and is used for acquiring images inside the gallery-type fish tank; the gallery-type fish tank comprises a rectangular tank body, a water inlet, a water outlet, water isolating plates and baffle columns; the water inlet and the water outlet are formed in the side wall of the tank body; the lengths of the water isolating plates are less than the width of the tank body, are vertically arranged inside the tank body in a staggering manner and divides the tank body into at least three communicated galleries at equal intervals; the isolating columns are arranged among grids and the side walls of the tank body; and the distance between every two isolating columns is 2cm-3cm. The invention further provides a gallery-type water pollution early-warning method. The gallery-type water pollution early-warning device is simple in structure, convenient to use, low in cost, high in sensitivity and visible in observation, can be used for accurately monitoring water quality in time and also can be applied to rapid early-warning of sudden water pollution accidents and large-scale water monitoring.

A torque overload protector comprises a main shaft end cover shaft. According to the structure of the torque overload protector, a steel ball is embedded into a main shaft groove, a clutch disc is attached to the steel ball, the other face of the clutch disc is attached to a disk-shaped spring, a main shaft sleeve abuts against the disk-shaped spring, and a lock nut is screwed in the other side of the main shaft sleeve to apply preload to the disk-shaped spring. The end cover shaft is fixed on a combination sleeve through an inner screw. The torque overload protector has the advantages that the structure is simple, assembly is easy, and the maintenance cost is effectively reduced; the action sensitivity is high during overloading, and the automatic working recovery capacity is achieved; the torque regulating range is wide, use is convenient and precise, and the technical problems that in the prior art, the structure is complex, assembly is tedious, and the applicability is poor are solved.

The invention is suitable for the technical field of data pre-processing, and provides a text classification method for different subject topics. The method comprises the following steps of: A, performing word selection on each subject by using a chi-square test to form a feature vocabulary of the subject; B, performing subject classification on the selected feature words by using a Naive Bayes model; and C, performing secondary classification on first two structures with maximum probabilities given in the Naive Bayes model classification by using a support vector machine to obtain a first result. Through two-time classification, the average accuracy of classification is improved. The text classification method for different subject topics is simple to realize and operate, convenient and accurate to use and more accurate in classification between the subjects, and effectively improves the accuracy of classification between the adjacent subjects.

The invention discloses a method for displaying P91 and P92 ferrite heat-resistant steel original austenite crystal boundary. The P91 and P92 ferrite heat-resistant steel original austenite crystal boundary can be clearly and completely displayed through adopting an aqueous sulfuric acid solution electrolytic etching and concentrated nitric acid solution electrolytic etching combination two-step electrolytic etching technology in order to accurately determine the austenite grain size. The method has the advantages of simple, convenient, fast and safe operation, easy control of the etching process, stable display effect and good reappearance.

The invention discloses a rolling-up device for warp knitted fabrics. The rolling-up device comprises a first cloth roller which is rotatably arranged on a machine frame, and a fabric tension regulating mechanism; the fabric tension regulating mechanism comprises fabric guide roller mounting seats and connecting plates, an adjustable tension spring of a thread connecting pair, a first fabric guide roller, a second fabric guide roller, a sensor and an electric control device, wherein, the fabric guide roller mounting seats and the connecting plates are respectively arranged at the two sides of the machine frame, and the first fabric guide roller and the second fabric guide roller are arranged between the fabric guide roller mounting seats and are rotatably connected with the fabric guide roller mounting seats; one ends of the connecting plates are fixedly connected with the machine frame, and the other ends of the connecting plates are rotatably connected with the fabric guide roller mounting seats, the first fabric guide roller and the second fabric guide roller are respectively arranged at the upper side and the lower side of a rotating joint of the fabric guide roller mounting seats and the connecting plates, and the two ends of the adjustable tension spring are respectively connected with the upper end parts of the machine frame and the fabric guide roller mounting seats. The rolling-up device can prevent rolled fabric patterns from distortion and deformation, and the fabric tension regulating mechanism can accurately regulate the tension required by fabrics in rolling. The rolling-up device has the advantages of wide regulation range, simple and reliable structure and small occupation space.

The invention provides a special measuring device for building design. The problems of large error, high labor intensity, low efficiency, economic benefit loss and the like of the existing manual length measurement are effectively solved. The device has the characteristics of raw material consumption reducing, manpower saving, cost saving and the like. The economic efficiency is improved. According to the invention, the length of a steel strand is measured through a mechanical structure; electric energy is not used; the device is conveniently used in the measurement process of the steel strand; the device has the advantages of convenient and accurate measurement and low worker labor intensity, and is suitable for the measurement of batch steel strands; the length of the steel strand is determined on a dial according to needs; and after the steel strand reaches a length, a holding device automatically holds the steel strand tightly to automatically acquire the steel strand of required length.

The invention discloses a contour drawing mirror image positioning amplifier, which is characterized in that a mirror image reflector capable of moving parallel to a drawing board is arranged in front of the drawing board, and an isosceles triangle amplifying ruler and a sight distance rod are arranged in front of the mirror image reflector; the isosceles triangle amplifying ruler is installed on a horizontal sliding rod below the drawing board through a vertical connecting rod, and the horizontal sliding rod is externally provided with the sight distance rod. The contour drawing mirror image positioning amplifier adopts the mirror image reflector and the isosceles triangle amplifying ruler to carry out measurement and amplification on a mirror image directly, so that a drawing person is enabled to draw the shape contour of a scene or a building accurately according to a self determined proportion, and an error in the shape contour brought about by visual perception and estimation is avoided. Meanwhile, the time spent on contour drawing is further saved because of direct measurement and amplification without modification, thereby being capable of playing a good role for realistic drawing persons. The contour drawing mirror image positioning amplifier disclosed by the invention is scientific and reasonable in design, convenient and accurate in use, and applicable to contour positioning and amplifying for sketching, pencil sketching, color sketching of urban architecture scenery.

The invention belongs to the technical field of face recognition and especially relates to a novel precise face recognition system. The system includes a high definition camera, an infrared human bodysensor, an auxiliary light source, a control chip, a Gabor filter, an image normalizer, an ARM processor, a database and a display device. An expression action recognition filtering and comparison DSP processor is also connected with an expression action recognition buffer module. Through setting of the expression action recognition filtering and comparison DSP processor and the expression actionrecognition buffer module, a series of expressions or actions for identity verification of a person can be taken as identify verification information, so that credit card fraud when the precision face recognition system is applied to payment can be prevented and a problem of face recognition of twins can be solved easily.

A grease gun with lighting function belongs to the technical field of manual lubricating oil supply equipment, including a gun head, a gun barrel, a handle, a pressure rod and a handle, an oil injection pipe is arranged on the gun head, and a grease nozzle is arranged on the head of the oil injection pipe; The air hole, the front end of the gun barrel is provided with a lighting device base, the lighting device base is provided with a lighting device, the lighting device is connected and fixed with the lighting device base through a bracket, the lighting device base and the gun barrel are connected by screw threads, and the tail of the gun barrel is also equipped with a rubber sleeve. The grease gun can be used conveniently and accurately in poor light conditions, which greatly improves the working efficiency of the grease gun.

The invention relates to a pair of forceps with LED lamps embedded into the pointed ends. The forceps comprise a forcep body, the LED lamps and a power source. The two LED lamps are embedded into the pointed ends of the forcep body and connected with the power source through wires. The forceps further comprise a switch installed on the inner side face of a forcep rod part. The power source is installed at the tail end of the forcep body, or an independent external power source is adopted. The forceps have the advantages of being simple in structure, easy to manufacture and use, high in illumination performance, free of shadows, low in price and the like.

The present invention provides a road and bridge construction measurement device. The problems are effectively solved that errors are large, labor intensity is high, the efficiency is low and economicbenefit is lost when manual length measurement is performed. The method provided by the invention reduces the consumption of raw materials, saves the labor and save the cost so as to improve the economic benefit. The method employs a mechanical structure to achieve measurement of the length of a steel strand with no need for electric energy so as to facilitate usage in the construction process, have convenient and accurate measurement and low worker labor intensity and be suitable for batch measurement of the steel strand, after the steel strand reaches a predetermined length, a runner can belocked and is not rotated, the length of the steel strand is a required length, and after the a structure on a graduated disc is set, the method can automatically obtain the steel strand with the required length.

The invention discloses a multi-fetus heartbeat and movement monitor based on a wireless protocol, belongs to the technical field of electronics, and aims at providing the heartbeat and movement monitor which is not only oriented to single-fetus pregnant women, can also be more conveniently used for dual-fetus or multi-fetus pregnant women, and is provided with a replaceable ultrasonic probe and based on the wireless protocol.The multi-fetus heartbeat and movement monitor is composed of a signal processing module, an audio output module, a display module, a communication module, a control module and a main control module.Fetal heartbeat and movement monitoring service based on the wireless protocol can be more conveniently and accurately provided for dual-fetus or multi-fetus pregnant women.Heartbeat and movement information of two or more fetuses can be obtained from multiple signals at the same time, the multi-fetus heartbeat and movement monitor can be conveniently used for dual-fetus or multi-fetus pregnant women, and meanwhile single-fetus pregnant women can obtain more accurate data.

The invention discloses a court positioning system and method based on computer vision. The system comprises an acquisition equipment calibration module, a sideline detection module and a positioningcalculation module; the acquisition equipment calibration module obtains an external parameter matrix, an internal parameter matrix and a distortion matrix of the acquisition equipment; the sideline detection module detects the position of the sideline in the image; the positioning calculation module obtains positioning data of players or balls through calculation; and the system further comprisesa data recording and storing module. The court positioning method based on computer vision comprises the following steps: calibrating acquisition equipment, detecting court sidelines, performing positioning calculation, and recording and storing data. According to the system and the method, the players and the balls are positioned only by adopting the single video acquisition equipment, the system and the method are convenient and accurate to use, extra equipment worn by the players is not needed, the data about the movement states of the players can be acquired more easily, and great supportis provided for movement data analysis.

The invention discloses a multi-purpose folding device suitable for portable electronic terminal equipment and precision appliances. The device is simple and exquisite in mechanical structure, easy, convenient and accurate to use, stable and reliable, and has the advantages and characteristics of being easier to manufacture, less in material consumption and lower in cost. The device is not only suitable for intelligent electronic terminal equipment, but also suitable for folding or unfolding supporting plates of the precision appliances and covering materials fixedly and adhesively connected.Through a limiting bayonet and a convex stop clamp of the folding device, the supporting plate a and the supporting plate b of a shell cover supporting plate can be folded or unfolded simply and flexibly, and are kept stable at multiple angles; due to the arrangement of a sliding hook and a hook sliding rail, the telescopic deformation of the covering membrane materials fixedly and adhesively connected on the supporting plates is innovatively avoided and the functions of the equipment or appliances are better achieved; meanwhile, main mechanisms are hidden in a hollow cavity of the shell coversupporting plate, so that the folding device has a relatively good appearance, and functions of the equipment or appliances with the folding device applied can be better achieved.

The invention provides a ship bilge keel mounting bed-jig template applied to the technical field of ship bilge keel mounting auxiliary tools. The invention further relates to a ship bilge keel mounting method. One end of a template piece (1) of the ship bilge keel mounting bed-jig template is a locating arc part (2); one side of the template piece (1) is a bilge keel locating part (3); a concavepart (4) is arranged at the combined part of the bilge keel locating part (3) and the locating arc part (2); a step part (5) is also arranged on the bilge keel locating part (3); and the step part (5)divides the bilge keel locating part (3) into a first locating surface (6) and a second locating surface (7). According to the ship bilge keel mounting bed-jig template and the ship bilge keel mounting method, the structure is simple, the ship bilge keel and a ship-hull plate can be conveniently and accurately located and mounted, and it is important that the workload of the ship bilge keel mounting process is effectively reduced by changing the mounting time section of the ship bilge keel.

The invention discloses a nerve acupuncture rehabilitation therapeutic apparatus based on big data, the nerve acupuncture rehabilitation therapeutic apparatus comprises a shell assembly, the shell assembly comprises a box body, a connecting rod and a holding rod, one side of the box body is fixedly connected with one end of the connecting rod, and the end, away from the box body, of the connecting rod is fixedly connected with one end of the holding rod; a driving assembly comprises a top tray; a needle head can be controlled to reciprocate up and down by pressing a first switch, the accuracy is high, manual needle head pulling and inserting are avoided, and the physical strength of medical staff is saved; the needle head can be controlled to rotate by pressing a second switch, the needle head does not need to be manually rotated, the mechanical control precision is high, shaking is avoided, and acupuncture recovery is facilitated; an arm of a patient is fixed through a first fixing semi-ring and a second fixing semi-ring, the distance and angle between the needle head and the arm can be adjusted by rotating the connecting pipe and the box body, use is convenient and accurate, and errors are small; and nerve acupuncture is controlled mechanically and automatically, which saves manpower.

The invention discloses a corridor-type water pollution early warning device, which includes a corridor-type fish tank, a bracket and a camera, the bracket is arranged on the side of the corridor-type fish tank, the camera is arranged on the bracket, Collect the image inside the corridor type fish tank; the corridor type fish tank includes a rectangular cylinder body, a water inlet, a water outlet, a water baffle and a barrier column, and the water inlet and the water outlet are arranged on the tank At the side wall of the body, the length of the baffle plate is less than the width of the cylinder body, and they are staggered and vertically arranged inside the cylinder body, and the cylinder body is equally spaced into at least 3 connected corridors; The barrier column is arranged between the grid and the side wall of the cylinder, and the distance between the two barrier columns is 2-3 cm. At the same time, the invention also provides a corridor type water pollution early warning method. The invention has the advantages of simple structure, convenient use, low cost, high sensitivity, straight pipe observation, timely and accurate monitoring of water quality, and can be used for rapid early warning of sudden water pollution events and large-scale water quality monitoring.

The invention relates to a special tool for restoring a seat hole of a machine of a haven, which is provided with a bend angle base, wherein a dovetail slide way seat of a machine tool is arranged on the bend angle base, a slide plate with a dovetail groove is arranged on a dovetail slide way on the dovetail slide way seat, a rotatable lead screw is arranged on the dovetail slide way seat which is matched with a screw sleeve below the slide plate, a motor with a speed reducer is arranged above the slide plate, an output shaft of the speed reducer is connected with a cardan shaft mechanism, the other end of the cardan shaft mechanism is connected with a long toolbar, and two adjusting racks are matched on the long toolbar. The invention has the effects that the special tool for restoring the seat hole of the machine of the haven is adopted to maintain the shaft hole of the large-sized loading and unloading equipment of the haven, such as the equipment of a portal hoist, a large-sized crane and the like, can carry out in-situ operation, does not need to completely disassemble the equipment, can carry out in-situ maintenance, is convenient to use, saves the time of disassembly, lifting and transportation and shortens the maintenance period. The expansion and contraction length of a cutter can be adjusted by using an adjusting bolt, and the use is convenient and accurate. The long toolbar can be superposed with the center of the seat hole to be processed by adjusting the bolts via the adjusting racks.

The invention relates to the technical field of information, and discloses an information technology chip testing device, which aims to solve the problem that the existing chip testing device cannot accurately measure the temperature of a tested part during use, and comprises a shell, a placement part and a testing part movably arranged in the shell through a third telescopic part, the testing mechanism is used for testing the chip placed on the placing piece, and the vacuumizing mechanism is used for adsorbing and fixing the chip. When the chip is tested, the connecting part is in magnetic attraction connection with the second movable part, and when the testing part horizontally moves on the chip for testing, the connecting part drives the second movable part and the first movable part to move along with the moving track of the testing part. At the moment, the movable seat which is magnetically attracted with the first movable part horizontally moves along with the first movable part, so that the temperature measuring part moves along with the test part in the cavity, the test temperature can be accurately measured when different positions of the chip are tested, and the use is convenient and accurate.

The invention relates to a composite polymerization inhibitor for extracting and rectifying conjugated diene with dimethylformamide, and a use method. The composite polymerization inhibitor is characterized in that the inhibitor comprise a component A and a component B, wherein the component A is a mixed solution prepared by dissolving 4-hydroxyl-2,2,6,6-tetramethyl piperidine-1-oxygen, 2-hydroxyl ethylamine and an adjuvant in toluene; a weight concentration of 4-hydroxyl-2,2,6,6-tetramethyl piperidine-1-oxygen in the mixed solution is 10-20%; a weight concentration of 2-hydroxyl ethylamine in the mixed solution is 20-40%; a weight concentration of the adjuvant in the mixed solution is 5.0-20%; the adjuvant is alcohol, propyl alcohol, isopropanol, isobutanol, tertiary butanol or phenethyl alcohol; and the component B is a sodium nitrite aqueous solution with a weight concentration of 10-30%. The components of the polymerization inhibitor have synergistic effects, the polymerization inhibitor has a good polymerization inhibition effect, is not deposited in a tower, is convenient and accurate to use, is not crystallized and is freeze-resistant in a low temperature environment, and the consumption of a solvent is low.

The invention provides a full-automatic grinding testing instrument which comprises a workbench, a guide rail arranged on the workbench, a sliding device arranged on the guide rail, a driving motor and a digital display device, wherein the driving motor is arranged on the workbench and connected with the sliding device, the digital display device is arranged on the workbench and corresponds to the sliding device and a first testing rod is arranged on the sliding device. By adopting the full-automatic grinding testing instrument, full-automatic accurate detection of combination firmness can be performed on the surface of a product, the quality of the product can be determined through the accurate detection of wear-resistant frequency of printing ink on the surface of the product and the use is convenient and accurate.

The cloth cutting device comprises a base, a bearing plate is arranged at the top end of the base, the bearing plate and the base are connected together in an inserted mode, electric push rods are arranged between the two sides of the base and the bottom face of the bearing plate, a control box is installed in the middle of the front face of the base, and a cutting frame is arranged on the upper surface of the bearing plate. The cloth tailoring device solves the problems that an existing cloth tailoring device cannot conveniently position cloth according to use requirements, so that deviation is prone to occurring in the cloth tailoring process, cloth waste is caused, and the existing cloth tailoring device is poor in flexibility and cannot be adjusted according to the use requirements of the existing cloth tailoring device. According to the cloth cutting equipment, the structure of the cloth cutting equipment is improved and optimized, so that the height of the cloth cutting equipment can be adjusted according to the use requirements of the cloth cutting equipment, a worker can conveniently use the cutting equipment at the use height suitable for the worker, and the worker can conveniently and easily work.

The invention discloses a height control device for interior decoration. The height control device comprises a fixed base, an adjusting plate is mounted at the upper end of the fixed base, the four corners of the bottom end of the adjusting plate are fixedly connected with lower threaded adjusting columns, adjusting handles are connected to the bottom ends of the lower threaded adjusting columns in threaded and inserted modes, upper threaded adjusting columns are connected to the bottom ends of the adjusting handles in threaded and inserted modes, fixing plates are symmetrically and fixedly connected to the upper end face of the adjusting plate, an adjusting main body is mounted between the fixing plates, measuring devices are symmetrically mounted on one side of the adjusting main body, astorage box is mounted on the upper part of one end of the adjusting plate, a transmission rod is mounted in the middle of the adjusting main body, the end of the transmission rod is fixedly connected with an adjusting hand wheel, a bearing is mounted inside the adjusting hand wheel and mounted on the transmission rod, and bevel gear sets are symmetrically mounted on the transmission rod. The height control device is convenient and fast to use, synchronous control and adjustment can be achieved, and thus height adjustment and control are more accurate.

The invention discloses an intelligent voice scene prompt panel switch which comprises a shell body, an upper surface of the shell body is provided with a touch induction press key, a lower end of the touch induction press button is provided with a backlight indicating lamp, a lower end of the backlight indicating lamp is provided with an intelligent voice prompt mechanism, a PCB circuit board is arranged in the shell body, a 3V auxiliary power source is arranged on the PCB circuit board, an upper end of the 3V auxiliary power source is provided with an intelligent MCU micro-computer control chip, a lower end of the 3V auxiliary power source is provided with an oscillator, a left side and a right side of the 3V auxiliary power source are respectively provided with a power source voltage converter and a digital coding circuit chip, and a lower end of the digital coding circuit chip is provided with a signal emitting device; the digital coding circuit chip is electrically connected with the touch induction press key, the backlight indicating lamp, the PCB circuit board, the 3V auxiliary power source, the intelligent MCU micro-computer control chip and the signal emitting device. The beneficial effects of the intelligent voice scene prompt panel switch are that the intelligent voice scene prompt panel switch is simple in structure and strong in practicality.

In the present invention, the producting unit consists of camera shooting sample module which is connected with centre control processing module and character printing module which is also connected with the centre control processing module as well as the identifying unit consists of camera shooting sample module which is connected to centre control processing module and input / output module which is also connected to the centre control processing module.

The invention discloses a point-radiation mirror-image positioning amplifier for contour drawing. The point-radiation mirror-image positioning amplifier mainly comprises a tripod for supporting a drawing board, the drawing board, a mirror-image reflection mirror fixed to the drawing board, a triangular pantograph clamping the mirror-image reflection mirror and the drawing board, and an eye blocking unit. A fixing unit is arranged on the triangular pantograph, when a contour is drawn, a painter just needs to overturn the drawing board or directly draw in front of drawing paper, measurement errors caused by overturning and moving of the triangular pantograph are avoided, and the accuracy of drawing of the amplified contour is improved; meanwhile, drawing time is shortened. In addition, the distance between the painter and the drawing board is limited through a mark, the eye blocking unit is arranged, and especially a radiation point is arranged, so that the point of sight and the sight distance of the painter are kept fixed relatively, and picture amplifying stability is ensured. The point-radiation mirror-image positioning amplifier for contour drawing is scientific and reasonable in design, convenient and accurate to use and suitable for contour positioning and amplifying for sketching and color sketching of urban building landscapes.