32results about How to "Increase precision value" patented technology

A CPU (134) of a body composition measuring apparatus (100) drives a navel position indicator (118) so that it emits light. The height of a frame (114) is adjusted so that a beam of light from navel position indicator (118) irradiates the navel of a human subject. Plural sensors (106) are mounted on the frame (114), and each sensor measures a distance from the sensor to a position to be measured, whereby the abdominal width (X) of the human subject is determined. Subsequently, CPU (134) obtains measured values of weight (W) and bioelectrical impedance (Z). CPU (134) then reads an equation for calculating the visceral fat area and estimates the visceral fat area (Y) based on the measured abdominal width (X), weight (W), bioelectrical impedance (Z), and the equation.

The invention relates to a method for improving optic loading imaging quality, in particular to the method for using a multistage vibration isolation platform to improve the optic loading imaging quality, and belongs to the field of high-frequency vibration control. The vibration isolation platform comprises an upper platform, a lower platform and a support rod for connecting the upper platform and the lower platform. The vibration isolation platform can be installed on a flywheel or a control moment spinning top and the like between a satellite actuating mechanism and a satellite star or between an optic payload and the satellite star. The control moment spinning top, an installation support and the upper platform of the vibration isolation platform jointly form an upper platform system. When the optic payload and the satellite star are needed for loading the vibration isolation platform, a base of the optic payload is fixedly connected with the upper platform of the vibration isolation platform to form a set of the upper platform system. The lower platforms of all vibration isolation platforms are fixedly connected onto the satellite star to jointly form a lower platform system. The method solves the problem that imaging accuracy and stability of the optic payload on a star are low.

An image processing method and system is provided for reducing the quantization layer in an input quantized image. The system detects if a pixel in a quantized input image belongs to a ramp area in a selected direction. Based on such ramp detection, a quantization level is dynamically selected. Then, a pre-segmentation operation is performed on a smoothly changing image area for each pixel in that direction. That area can then be refined by segmentation. A low-pass filtering process can then be applied to the refined segment to obtain filtered pixels. An overall gain value is then determined and used to adjust the filtered pixel luminance values to obtain output luminance values with higher precision values than that of the input image luminance values. This provides an output video image with reduced quantization layer and less perceivable quantization artifacts.

The invention relates to a method and a vibration isolation platform for improving spacecraft attitude control performance, in particular to a method for improving the imaging quality of optical loads by using a positive and negative stiffness technology and the vibration isolation platform, and belongs to the field of high-frequency vibration control. The vibration isolation platform comprises an upper platform, a lower platform and a supporting rod connected with the upper platform and the lower platform. The positive and negative stiffness technology is adopted for the supporting rod, and according to the technology, a very high damping ratio can be reached under the condition of common damping material, so that energy is consumed rapidly, and the purpose of improving the imaging quality of the optical loads is achieved.

A method for providing traffic telematics information about the travel route of a vehicle traveling on a road system having multiple roads interconnected between road junctions includes: determining a probability of the vehicle approaching a road junction and assigning the probability to the respective road junction, and transmitting information regarding the road junctions for which the probability of being driven through is above a specified threshold.

The invention relates to the field of physical geography magnetic method explosion, which is used for analyzing and calibrating a three-component magnetometer produced by factories and substantially improving the measured actual value after being corrected. By the method, a plurality of data in a uniform magnetic field are measured first and need to meet the requirement for calculating the deviations of installation angles of various elements at high precision. After calculating various deviation angles, a gravity magnetic component value measured in the actual detection is directly corrected into a measuring result with high precision on a computer by using the deviation angle with high precision. The method improves the magnetic measuring precision and ensures that the magnetic measuring precision of the three-component magnetometer is improved to 10-30nT.

The invention relates to a subway carriage disinfection robot and an automatic navigation method thereof, and belongs to the technical field of robots. A flow channel of an atomization plate of the disinfection robot is communicated with a micro air compressor through an air inlet, air outlets opposite to each other are formed in the side wall of a vertical pipe of the flow channel, air holes arefurther formed in the lower portion of the atomization plate, pressurized air enters the flow channel, sprayed air forms rotational flow to the air holes, atomized particles are subjected to secondarycrushing, and a pneumatic ultrasonic atomizer is adopted, so the atomized fog amount is increased, and the particle size of fog drops is smaller. The automatic navigation method uses a combination ofa laser radar and visual odometer or visual navigation, closed-loop slam mapping navigation strategy is adopted, so that automatic and accurate navigation of the robot in a subway carriage is realized, and the problem of gallery mobile navigation only depending on laser radar positioning is solved; and the problem that a visual odometer or visual navigation is greatly influenced by light is alsoavoided.

The invention discloses a high-sensitivity acceleration measurement method and sensor based on optical fiber optical tweezers, and the method comprises the steps: applying a certain fluid traction force to a polystyrene microsphere captured by the optical tweezers, measuring the displacement of the polystyrene microsphere through a four-quadrant photoelectric detector, and calibrating the relation between the displacement of the microsphere and the light receiving force; when the microsphere is placed in an acceleration environment, the light force corresponding to the deviation displacement caused by the environment acceleration is obtained according to the relation between the displacement of the calibrated microsphere and the light receiving force, and then the light force is divided by the mass of the microsphere, so that the environment acceleration is obtained. According to the invention, the micro-sphere in the micro-fluidic channel is stably captured in a non-contact manner by using the optical fiber optical tweezers technology and the micro-fluidic technology, and the appropriate conical optical fiber is selected based on time domain finite difference numerical calculation, so that the micro, high-sensitivity, high-precision and low-cost measurement of the acceleration of the micro-sphere is realized.

The invention relates to the technical field of computer auxiliary equipment, and discloses a safety protection device for computer network cable producing and winding. The safety protection device for computer network cable producing and winding comprises a support, wherein the outer part of the support is movably connected with a winding roller; the outer part of the winding roller is fixedly connected with a rotating wheel; and a semicircular groove is formed in the outer surface of the rotating wheel. Normally, a limiting rod can move out of the semicircular groove along the inner side face of the semicircular groove in the rotating process; and a fixing shell is fixedly connected to the outer part of the support. Through the interaction of a rotating wheel, the semicircular groove, a movable rod, teeth, a first gear, a limiting wheel, the limiting rod, an electromagnet and a first volute spiral spring, the winding roller can be stopped in time when the rotating speed of the winding roller exceeds the normal rotating speed range, and the situation that due to the fact that the rotating speed of the winding roller is too high, the tension degree of a network cable exceeds the limit value, metal wires in the network cable are broken or the outer surface of the network cable is pulled and damaged is avoided, so that the safety in the network cable winding process is better.

The invention relates to a distance measuring device for debugging of an emergency lock system of an aircraft canopy. The distance measuring device comprises a fixed head, a distance measuring head, a screw rod with a gap, a locking nut and scale marks, the end of the fixing head is oblate, and a hole is formed in the middle of the fixing head so that the fixing head can be fixedly connected with an emergency lock of peripheral equipment through a fixing pin. The end of the distance measuring head is oblate, and a hole is formed in the middle so that the distance measuring head can be fixedly connected with the transmission mechanism through a fixing pin; the screw rod with the gap is arranged at the root of the distance measuring head, and the scale marks are manufactured at the gap of the screw rod; and the locking nut is installed on the screw rod with the gap. The center distance between the mounting hole of the emergency lock and the mounting hole of the transmission mechanism is measured and directly read by adjusting the total length of the distance measuring device, and the pull rod is manufactured according to the size, so that main technical parameters such as unlocking stroke of the emergency lock system can meet requirements, the emergency lock system can normally work, and the device is simple and quick to operate.

Embodiments of the invention provide an ultrasonic signal treatment method and apparatus. The ultrasound signal treatment method comprises the following steps: performing iterating on a first iteration variable A<m>(n) and a second iteration variable a<m>(n) according to a size relationship between an initialized first iteration variable A<m>(0) and an initialized first intermediate variable B<m>(0), determining a delay time k<m>(n) of an echo signal of an ultrasonic signal emitted by an array element m to different detection distances, performing interpolating on the first iteration variableA<m>(n), and performing correcting on a delay time k<m>(n+1) respectively according to size relationships between interpolation variables shown in the specification and a first intermediate variable B<m>(n). The embodiments can realize reduction of a calculation amount required for delay calculation in a wave beam synthesis process, can improve an accuracy value of the delay calculation, and improves wave beam synthesis quality.

The invention discloses a preparation method of pear dietary fiber. According to the preparation method, the problems of low utilization rate of pear residue raw materials, high processing cost, low product yield and the like are solved, a three-phase preparation separation technology is utilized to simultaneously decolor and deproteinize, the method is high in efficiency and short-time, the prepared pear residue dietary fiber has the advantages of small particle size, good color, strong water holding capacity and swelling capacity and good activity, the obtained soluble dietary fiber can be used as a food additive of beverages, biscuits, bread, noodles, pastries, ice cream, instant coffee, chocolate or milk tablets, or can be prepared into tablets, capsules or granules, the obtained insoluble dietary fiber can be used for making dietary fiber biscuits, bread, noodles or pastries, or can be prepared into tablets, capsules or granules, and the obtained soluble dietary fiber can be mixed with the insoluble dietary fiber to prepare tablets, capsules or granules.

The invention discloses the molding equipment automatic reset calibration device of a pulp molding product. The device comprises a forming machine and a grating ruler body. The forming machine comprises a machine tool bed. The top of the machine tool bed is provided with a first station, a second station and a third station. The first station, the second station and the third station are movably provided with one reciprocating work bench. The front and rear sides of the reciprocating work bench are provided with driving mechanisms. The grating ruler body comprises a scale grating and a gratingreading head. Based on the accuracy of existing machine bench equipment, the technical grafting of a grating ruler is combined, and program control is cooperated to complete the slave signal induction of the device, a control system is fed back, program calculation compensation is performed, an instruction is transmitted to a servo motor, and a screw rod is driven to compensate an offset value soas to realize the positioning setting accuracy value of a workbench. The device can acquire a high precision value and a modular fixture on a cooperation device can have a good service life cycle.

The invention discloses a lower bracket assembly of a car radiator, which comprises a bracket body on which two flanging holes are arranged, and is characterized in that: the section of the bracket body is shaped like a Chinese character 'ji', and a middle strengthening part is connected with the undersurface of the bracket body; the left end of the bracket body is connected with a left connecting piece external plate bending upwards, and the section of the left connecting piece external plate is shaped like a Chinese character 'ji'; the left side of the left connecting piece external plate is connected with a left connecting piece internal plate, and the right end of the bracket body is connected with a right connecting piece external plate bending upwards; and the section of the right connecting piece external plate is shaped like a Chinese character 'ji', and the right side of the right connecting piece external plate is connected with a right connecting piece internal plate. The whole force transfer structure of the invention is more continuous and complete, and greatly improves the torsional rigidity of a front car body, thereby improving the performance and driving comfort of the whole car and being difficult to generate the phenomena that the radiator is unstably installed or generates abnormal sound; and the radiator can be installed from top to bottom, and the operation is more labor-saving.

The invention relates to an RFID label number estimation system and method, in particular to an RFID label number estimation system and method based on a virtual vector Aloha protocol. The objective of the invention is to solve the problems of high resource demand, low query speed, high computing resource overhead and high time complexity of an existing RFID cardinal number estimation protocol, and low estimation accuracy of the number of target labels in an RFID system. The RFID label number estimation system based on the virtual vector Aloha protocol comprises a virtual vector generation module based on the Aloha protocol, a vector analysis and probability estimation execution module, a single reader polling module and a result processing module. And the virtual vector generation modulebased on the Aloha protocol is used for generating an expected vector of the target label set and collecting a response vector for obtaining a response. The method is applied to the field of RFID label number estimation.

The invention provides a portable juicer which comprises a main machine, an extrusion assembly and a juice receiving container, the extrusion assembly and the juice receiving container are arranged below the main machine, the extrusion assembly comprises a screw rod and an extrusion cylinder arranged outside the screw rod in a sleeving mode, a motor is arranged in the main machine, an output shaft of the motor is in transmission connection with the upper end of the screw rod, and a residue receiving container is arranged at the bottom of the extrusion cylinder. The residue receiving container is located in the juice receiving container, an upper end opening of the residue receiving container is not higher than an upper end opening of the juice receiving container, the extrusion cylinder comprises a separation bottom wall, in the juicing process, the separation bottom wall is matched with the screw rod to form a first closed cavity, and the separation bottom wall is matched with the residue receiving container to form a second closed cavity; and the juicer further comprises a juice sealing structure for preventing juice from entering the first closed cavity and the second closed cavity. And the first closed cavity and the second closed cavity are separated by the separation bottom wall so that the position arrangement of an extruding and crushing functional area and a residue and juice receiving functional area of the whole machine is more reasonable, and a space utilization rate is higher.