68results about How to "Improve drift" patented technology

The invention discloses a pedestrian positioning and trajectory tracking method and a pedestrian positioning and trajectory tracking system. An implementing mode of the method comprises the following steps: receiving acceleration information, angular speed information and magnetometer information of a pedestrian; performing filtering and threshold value segmentation on the acceleration information and the angular speed information to obtain speed state information; when the speed is non-zero, obtaining attitude information by utilizing the angular speed information; when the speed is zero, modifying the angular speed information to obtain the attitude information by utilizing the angular speed information; performing elliptical correcting on a magnetometer, and performing inclination angle compensating on the magnetometer by utilizing the attitude information to obtain a magnetic course angle; fusing the magnetic course angle and a course angle in the attitude information to obtain a fused course angle; combining the attitude information and the fused course angle, and integrating the acceleration to obtain the speed information; after the speed information is subjected to zero speed correcting, obtaining the displacement in the horizontal direction and the height in the vertical direction, and performing pedestrian positioning and trajectory tracking through the displacement and the height. The pedestrian positioning and trajectory tracking method and the pedestrian positioning and trajectory tracking system can navigate for a long time, and are high in adaptability and wide in application range.

The invention discloses a conducting material doped PDMS composite film capable of improving the longitudinal electric charge density of a generator frictional layer and a preparation method thereof.The preparation method comprises the following steps: (1) taking a substrate, and taking an aluminum foil to be adhered to the substrate; (2) spin-coating a PDMS solution on the aluminum foil, vacuumizing in a vacuum cavity after spin-coating, and then heating and curing; (3) spraying gold on the surface of the PDMS with a magnetron sputtering method, (4) carrying out plasma treatment, and spin-coating the PDMS solution; (5) vacuumizing in the vacuum cavity, heating and curing; and (6) repeating the step three to the step five to obtain the PDMS gold composite film with different numbers of gold layers. A G-TENG with high transfer electric charge density and biocompatibility and low impedance characteristic is successfully prepared, an internal electronic area is added by burying gold layers in the near surface of a frictional surface, so that the output of TENG is increased, and the gold layers are beneficial for the drifting of electrons inside the frictional layer and play a role oftrapping the electrons.

A method for driving liquid crystal display includes outputting the first pixel voltage to the first pixel in the first pixel column for varying transmissivity of the first pixel, doing the same thing as above on the second pixel to very transmissivity of the second pixel, switching on backlight module and regulating pixel electrode voltage of the first pixel to make transmissivity of the first pixel be decreased at the first preset time then regulating pixel electrode voltage of the second pixel to make transmissivity of the second pixel be decreased at the second preset time.

The invention relates to the field of positioning, and discloses a positioning method and device of a mobile terminal. The positioning method of the mobile terminal comprises the steps of obtaining a scanning fingerprint of a wireless signal at the position where the mobile terminal is; matching a fingerprint database based on the scanning fingerprint to obtain N anchor points with the highest matching score; generating a particle group based on the N anchor points; performing particle filtration on the particle group based on inertial navigation information to obtain alternative particle groups; determining the current movement model of the mobile terminal and performing particle scoring on the alternative particle groups based on the characteristics of the movement model; and obtaining a positioning solution of the mobile terminal based on the particle scoring result. The drifting and jumping probability of the positioned position can be reduced, the positioning track is enabled to be continuous, and the position positioning is accurate.

The invention discloses a chip fixing glue for LEDs (Light Emitting Diodes), which is prepared form the following components by percentage content (total weight of 100percent): 4.10% -4.60%of OE-6630A (silicone main agent); 6.30% -6.80% of OE-6630B (silicone curing agent); 3.20% -3.80% of aluminum oxide powder (Al2O3); 0.85% -0.95% of silica powder (SiO2); 3.50% -3.90% of SCR1012A (silicone main agent); 25.10%-28.10% of SCR1012B-R (silicone curing agent); 43.10% -47.55% of PA-1(flake silver powder); 6.40% -7.25% of SA-1 (granular silver powder); 1.7% -2.0% of polyamide curing agent; and 0.19% -0.22% of cyclohexanone. The invention has the advantages of high positioning accuracy, high-temperature and high heat resistance, high heat conductivity, high light transmission, high refrangibility, favorable confidence degree, convenient and quick use and low price and can be widely used for the bonding of chips of LED components, such as SMD (surface mount device), PLCC (plastic leaded chip carrier), LAMP, and DISPLAY and the like.

The invention discloses a ground ski vehicle, which relates to a ground gliding sports apparatus and belongs to the technical field of amusement, body building and apparatuses in stead of walking. The ground ski vehicle comprises two panels, two panel rotating assemblies, a panel connecting assembly, two wheel assemblies, two wheel steering shafts, two panel reset elastic devices and two wheel steering drivers. During advancing, a user pedals the panels to rotate and incline the panels left and right, and the rotation of the panels drives the wheel steering drivers to drive wheels to change the advancing direction so as to finish the actions of steering, swiveling, drifting and the like.

The present invention discloses a test method of a location system, a control terminal and a device with a storage function. The method comprises: a control terminal is connected with a test terminal and a reference terminal, and the test terminal is moved along the same path as the reference terminal; the control terminal receives position information from the test terminal and the reference terminal; and the position information difference of the test terminal and the reference terminal is employed to determine whether the position of the test terminal is abnormal or not. According to the mode, the test method of the location system, the control terminal and the device with the storage function can monitor whether the location of the test terminal has drifting abnormality or not in real time to allow researchers to immediately combine the field road condition to perform analysis of the drifting abnormality.

The invention discloses a gas water heater. The gas water heater comprises a gas water heater body, a smoke discharging system part, a wind pressure sampling device, a wind pressure sampling device and a controller. The smoke discharging system part installed on the gas water heater body, The wind pressure sampling device which is connected with the smoke discharging system part in a connected mode, The controller which is connected with the wind pressure sampling device, and the controller is used for controlling the working start and stop of the gas water heater; The gas water heater is characterized in that the wind pressure sampling device comprises a flat-mouth wind pressure sampling nozzle and an electronic wind pressure switch, one end of the flat-mouth wind pressure sampling nozzleextends into a smoke discharging channel of the smoke discharging system part, the other end of the flat-mouth wind pressure sampling nozzle is connected with a negative pressure cavity of the electronic wind pressure switch, the signal output end of the electronic wind pressure switch is connected with the controller. According to the gas water heater, parameter adjustment and production of thesmoke discharge system part are facilitated, the parameter drift problem is improved, so that the gas water heater can be effectively protected from blocking, the wind resistance performance is improved. The invention further provides a gas water heater blocking protection method.

The invention relates to a temperature color drift real-time correction device and method for an LED multi-primary-color lamp. The temperature color drift real-time correction device comprises a computer, a temperature sensor and a brightness and color measuring instrument; and the LED multi-primary-color lamp is provided with a control unit comprising a color management arithmetic unit. The method comprises the following steps of: 1) actually measuring the temperature curve original data of the lamp; 2) constructing a dynamic polynomial fitting function, and sending the dynamic polynomial fitting function to the color management arithmetic unit for storing the dynamic polynomial fitting function; and 3) obtaining brightness and color data including color coordinates (x, y) and brightnessvalues Y at different temperatures, and correcting temperature color drift data in real time. The temperature color drift real-time correction device and method have the practicability of large-scalemass production; and lamp-by-lamp measurement on a production line is not needed. With the temperature color drift real-time correction device and method adopted, for various light color outputs including color output, color temperature output and color coordinate output in a full color gamut, temperature color drift caused by temperature change can be greatly alleviated and even eliminated, and color drift of white light and various mixed color light at different temperatures is avoided. The device and method have the advantages of simple operation, efficient process, reliable data and good temperature color drift correction effect.

The invention provides a soybean lecithin oil formula feed. The formula feed comprises the following raw materials in parts by weight: 55-65 parts of white fish meal, 5-15 parts of soybean meal, 15-25 parts of alpha-starch, 3-7 parts of fish oil, 0-1 part of a vitamin premix, 0-1 part of a mineral matter premix, 0.01-0.1 parts of arachidic acid, 0.01-0.1 parts of (carboxymethyl)dimethyl-3-[(1-oxododecyl)amino]propylammonium hydroxide, 1-2 parts of calcium dihydrogen phosphate, 2-4 parts of cellulose, 35-50 parts of crude protein, 5-15 parts of crude fat, and 5-15 parts of crude ash, and 1-4 parts of soybean lecithin oil. The soybean lecithin oil is added into the feed in order to improve growth and feed coefficient of cultivated fishes and the like at a certain degree, fat contents of intestines and livers are substantially reduced, and adverse influences are not generated. The soybean lecithin oil formula feed has the efficacies for regulating nutrition, supplementing nutrition and improving utilization rate of feed, as well as reducing dust flying and automatic grading during production of feed in the aspects of processing properties of the feed, and improving physical quality and yield of granulation. The feed can be used as a bonding auxiliary agent in aquatic product feed, in order to improve drifting and settlement of the aquatic product feed in water, and reduce feed waste and water quality pollution.

The invention discloses an X-ray tube with a hollow structure, which comprises a glass shell (2), an adapter (4), an anode assembly and a cathode assembly (1), wherein the anode assembly comprises ananode cap (5) and an anode target assembly (3), the anode target assembly (3) is welded with the anode cap (5), and the internal part of the anode target assembly (3) is of a large-aperture deep holestructure (32); and the adapter (4) extends into deepest part of the internal part of the large-aperture deep hole structure (32) and is fixed with the anode target assembly (3). The X-ray tube disclosed by the invention can effectively reduce the drift of a focal spot.

The invention relates to a system for treating haze on the periphery of a building by utilizing air convection, and belongs to the technical field of haze treatment. According to the system for treating the haze on the periphery of the building, an air convection principle is utilized, a ventilation pipeline is arranged on the periphery of the building to suck and discharge pollutants near the ground. According to the adopted technical scheme, the system comprises an installation pipeline which is pre-embedded in the building, and the ventilation pipeline is arranged in the installation pipeline; the ventilation pipeline extends to the top of the building, and a windward device is arranged at the top of the ventilation pipeline; the bottom of the ventilation pipeline is 3-5 m away from theground, and an air suction port in the bottom of the ventilation pipeline faces the north or the northwest side; and the ventilation pipeline is used for carrying out natural convection on polluted air near the ground, the polluted air near the ground is circulated to the top of the building, and therefore the purpose of purification is achieved. The system is widely used for treating the haze onthe periphery of the building.

The invention discloses a clothes comfort-level remote intelligent detection system based on a mobile terminal. The clothes comfort-level remote intelligent detection system comprises a data acquisition terminal, and the mobile terminal connected with the data acquisition terminal; the data acquisition terminal comprises several pressure transducers and pressure-voltage signaling conversion circuits correspondingly connected with the pressure transducers, the data acquisition terminal also comprises a DHT90 temperature and humidity digital sensor, a data storage and control module, a data transmission module, and a power supply module which are connected in order, the power supply module comprises commercial power, an EMI filtering module, a circuit switching module, and a standby batterymodule, the commercial power passes through the EMI filtering module and the circuit switching module in order and is connected with the standby battery module, clothes pressure, humiture continuous acquisition and storage of human body under normal operating conditions are realized, real-time data display is realized, and the system has the advantages of small volume, low power dissipation, fastspeed, and accurate testing.

The antenna has one or more dipole squares at 45 degrees to the vertical or horizontal. A supply cable (27) is fed to a supply point (33) on one of two opposing parallel dipoles of a dipole square and a connecting cable (37) leads from this point to the supply point (35) on the opposing dipole and is electrically connected to the dipole halves of the dipole square at that point.