146results about How to "Accurate and stable detection" patented technology

Provided is a highly accurate optical pumping magnetometer, in which a static magnetic field and an oscillating field to be applied to a vapor cell are stabilized. To this end, the optical pumping magnetometer includes: Helmholtz coils for applying a constant static magnetic field to a vapor cell serving as a magnetic field detector; fluxgate magnetometers for detecting environmental magnetic noise in two directions of X-axis direction and Y-axis direction other than Z-axis direction which is a direction for detecting a magnetic field coming out of a measurement object while locating the vapor cell in the center thereof; magnetometer drive circuits for driving the fluxgate magneotometers; current converters for converting outputs of the magnetometer drive circuits into amount of currents; and magnetic field generating coils for generating a magnetic field in a phase opposite to the environmental magnetic noise in the two directions.

Provided is a highly accurate optical pumping magnetometer, in which a static magnetic field and an oscillating field to be applied to a vapor cell are stabilized. To this end, the optical pumping magnetometer includes: Helmholtz coils for applying a constant static magnetic field to a vapor cell serving as a magnetic field detector; fluxgate magnetometers for detecting environmental magnetic noise in two directions of X-axis direction and Y-axis direction other than Z-axis direction which is a direction for detecting a magnetic field coming out of a measurement object while locating the vapor cell in the center thereof; magnetometer drive circuits for driving the fluxgate magneotometers; current converters for converting outputs of the magnetometer drive circuits into amount of currents; and magnetic field generating coils for generating a magnetic field in a phase opposite to the environmental magnetic noise in the two directions.

This invention relates to a welding carriage operable to drive across a surface of a work piece having a joint to be welded. The welding carriage comprises a number of wheels, where each wheel is pivotal around an axle and where each wheel is a magnetic wheel; the welding carriage further comprises means for supporting a welding device wherein at least one of the wheels can be flexed inwardly or outwardly so that the welding carriage can travel over curved surfaces. The welding carriage can travel over magnetizable surfaces having any direction, e.g. orientation in space. The welding carriage can carry a laser sensor arrangement arranged to detect the position as well as the direction of a joint to be welded, so that the welding carriage is applicable for performing fully automated welding.

The air conditioner includes a surface temperature sensor for detecting a surface temperature of a clothes portion of a passenger. In the air conditioner, a thermal-feeling estimation value for the passenger is calculated based on the surface temperature of the clothes portion of the passenger, and air-conditioning operation of a passenger compartment is controlled based on the thermal-feeling estimation value. Accordingly, in the air conditioner, the thermal feeling can be always accurately estimated, and comfortable air-conditioning control can be performed using the thermal-feeling estimation value.

The system comprises: a X-Y precise stepping platform used for placing the optical component under test; using two laser beams to illuminate the surface of the optical component from both vertical and inclined directions; the generated scattered lights are collected by multi photoelectric detectors from different azimuth angles; converting the collected scattered lights into the electrical signals which are inputted into the computer; the computer controls the X-Y precise stepping platform to drive the optical component under test; making scan measurement, and comparing the scattered light signals with the scattered light signals used for showing the faults on the optical flat surface in order to realizing the location, classification and level of the faults on the optical flat surface.

The invention discloses a static target detection method based on two-background differencing. The method comprises the steps as follows: acquiring a video image; constructing a background model; detecting a moving target; establishing a pure background video image; detecting a foreground target; detecting a static target. Background modeling is performed by use of an improved Gaussian mixture model, and the method can be applied to accurate modeling of backgrounds having slow illumination change or repeated moving objects in complex scenes, particularly to conditions with slow illumination and weather change or higher moving object speed; by reducing the number of Gaussian distribution functions established for each pixel, the calculation amount is reduced, and the real-time performance is improved. Foreground object extraction is performed with a background differencing method, the principle and algorithm design are simple, the obtained result directly reflects the position, size and shape of a foreground object, and more accurate foreground object information can be obtained. A two-background model algorithm is adopted for static object detection, so that the method is lower in complexity and easy to implement.

An overcurrent detection circuit includes a current detection resistor that generates a voltage in proportion to current flowing through a switching element and a comparator that compares the voltage detected via the current detection resistor and a reference voltage generated by a reference voltage generation circuit to thereby detect overcurrent flowing through the switching element. In particular, the reference voltage generation circuit includes: a first resistance voltage dividing circuit that resistance-divides a standard voltage by connecting, in series, two types of resistors having different temperature characteristics; a second resistance voltage dividing circuit that resistance-divides the standard voltage by connecting, in series, resistors having the same temperature characteristics; and an instrumentation amplifier that generates the reference voltage according to the difference between the divided output voltages of the first and second resistance voltage dividing circuits.

A storage section stores, as stored current values, currents flowing when a voltage application section applies voltage vectors to a three-phase rotary machine. A position estimation section estimates the rotor position of the rotary machine in a stopped state based on the stored current values. An adjustment section adjusts a minimum necessary application time that allows the rotary machine to be magnetically saturated by voltage vector application, to enable rotor position estimation. Further, the adjustment section uses, as an adjustment evaluation value, the magnitude |ΔY| of differential admittance obtained by dividing a summed current value calculated from the stored current values by the voltage amplitude value of the voltage vector instruction when the voltage vector based on the voltage vector instruction is applied with the application time being set at an arbitrary application time, and adjusts the application time based on |ΔY|.

The invention discloses a transmission-type metal grating coupling SPR detection chip and a detection instrument, which are used for detecting target analytes in microfluids. The detection chip includes: a light-transmitting substrate; a metal film layer with a grating structure formed on the substrate; and a microfluidic layer covering the surface of the metal film layer, and microfluidic channels are distributed in the microfluidic layer, and The microfluidic channels are in contact with the metal membrane surface. The detector includes a light source, a spectrometer and the aforementioned detection chip. The invention utilizes the local characteristics of the surface plasmons and the frequency selection characteristics of the grating to realize signal enhancement and filtering, and detects the change of the peak value of the transmittance by measuring the change of the peak value of the transmittance after the incident light is coupled through the grating. Changes in biological information or concentration. The invention does not need to change the angle of the incident angle during detection, and has the advantages of real-time monitoring, high sensitivity, stability and speed, small size of the instrument, and convenient portability and operation.

A transfer point of a transfer arm is detected accurately and stably by using a position detecting wafer having an electrostatic capacitance sensor. A position detecting wafer S is formed in a wafer shape transferable by a transfer arm 20 and includes an electrostatic capacitance sensor 50 for detecting a relative position with respect to a reference object by detecting an electrostatic capacitance in relation with the reference object for a position detection. The electrostatic capacitance sensor 50 includes a detection electrode 52 for forming the electrostatic capacitance in relation with the reference object, and the detection electrode 52 is installed on a rear surface of a main body of the wafer shape. Installed on the main body is a guard electrode 100 covering the detecting electrode 52 when viewed from a front surface thereof, for blocking an electric field oriented toward the detection electrode 52 from the front surface.

The present invention discloses a method for detecting a plug-in of an online game. The method comprises: analyzing data of an on-going game in a manner that the game data are recorded and uploaded to a game terminal; comparing the game data with a database in the game terminal by the game terminal; and if the game data and data in the game terminal are different or greatly different, determining the game data are abnormal; and secondly, performing logical analysis on the abnormal game data, wherein logical analysis results are divided into accidental data anomalies and plug-in interference anomalies, accidental data anomalies are logical errors caused by a game client self, resulting in the abnormal game data, and plug-in interference anomalies are anomalies caused by the plug-in of the game. In the method, by real-time monitoring of the data in the game, data required to be changed by the plug-in are directly detected, and the detection is stable and accurate. At the same time, intermittent detection is adopted in a detection method, so as to improve the fluency of the game on the premise of ensuring the accuracy of the detection.

The invention relates to a detection instrument for the bonding strength of a ferromagnetic coating of remanufactured parts. The detection instrument comprises a load driving mechanism, a control device, a detection device and a supporting mechanism, wherein the load driving mechanism comprises a servo motor as a power device, a transmission mechanism, and a pressure head assembly connected with the transmission mechanism, the servo motor is arranged on one end surface of a driving mechanism shell, the transmission mechanism comprises a screw and a nut moving sleeve, the screw is connected with the servo motor, and a pressure spring, a pressure-bearing annular washer and a force transducer are sequentially arranged on one side of the nut moving sleeve; one side of the force transducer is adjoined with a pressure head seat, the pressure head assembly is embedded in the pressure head seat, a pressure head is embedded in the tip end of the pressure head assembly, and the nut moving sleeve and the pressure-bearing annular washer are arranged in the driving mechanism shell in a peripheral fixed axial sliding manner; the detection device comprises the force transducer, a magnetic memory probe on a loading platform, and a magnetic memory signal acquisition device; the control device controls the servo motor to run. The detection instrument has the advantages of being simple in structure, and accurate and stable in detection.

A traveling lane detector according to the present invention includes: an imaging unit mounted on a vehicle to take a road surface image; and an image processor performing image processing on the image to detect lane marks on the road surface. The image processor judges whether the vehicle is crossing the lane marks, and, when the vehicle is not crossing any of the lane marks, defines first and second windows, in the image, for detecting the lane marks located respectively on left and right parts of a road surface in front of or behind the vehicle, performs image processing on the image in each of the windows to detect the lane marks, and, when the vehicle is crossing any of the lane marks, defines a third window including the currently-crossed lane mark in the image, performs image processing on the image in the third window to detect the lane mark.

A vibrating gyrosensor includes a support substrate on which a wiring pattern having a plurality of lands is formed, and a vibrating element mounted on a surface of the support substrate. The vibrating element includes a base part having a mounting surface on which a plurality of terminals, and a vibrator part integrally projected in a cantilever manner from one of the sides of the base part and having a substrate-facing surface coplanar with the mounting surface of the base part. The vibrator part has a first electrode layer, a piezoelectric layer, and a second electrode layer, which are formed on the substrate-facing surface in that order. Furthermore, a reinforcing part is formed at the base end of the vibrator part so that the sectional area of the vibrator part gradually increases toward the base part.

A guide pipe is formed from a metal material, and its internal cross section has a circular shape whose diametric dimension gradually becomes smaller with a distance from an ultrasonic sensor. That is, the guide pipe is formed so that a route for transmitting an ultrasonic wave generated from the ultrasonic sensor may be tapered from this ultrasonic sensor toward a reflector plate. Thus, the acoustic pressure level of the ultrasonic wave which enters the reflector plate can be made higher than a value in a prior-art liquid level detecting apparatus. Accordingly, the energy of the ultrasonic wave generated from the ultrasonic sensor can be utilized for liquid level detection at a high efficiency, so that a fuel liquid level detecting apparatus capable of accurate liquid level detection can be provided.

The invention discloses a microsatellite instability detection and prediction method, a related site screening method, a model construction method and an application. The site screening method comprises the following steps: i) determining a microsatellite instability predicted value of a candidate microsatellite site in a sample; and / or ii) screening sites or site combinations for microsatellite instability detection by using one or more indicators including the microsatellite instability predicted value of the candidate microsatellite site; wherein the microsatellite instability predicted value is a quantified value of an abundance difference between a major allele type and a minor allele type in the candidate microsatellite site. The method provided by the invention is high in accuracy,and can accurately and stably detect the MSI state only on the basis of a single tumor sample.

A mask defect test apparatus, including a tension jig unit having a supporter on which a metal mask to be tested is located, a clamp part disposed at both sides of the supporter to fix opposite edges of the metal mask, and a tension part to apply a tension force to the metal mask fixed by the clamp part; and a test unit to test the metal mask fixed by the tension jig unit. A vertical distance between the metal mask located on the supporter and the test unit is less than or equal to a vertical distance between the tension jig unit and the test unit.

The invention discloses a fluorescence immunochromatographic kit for quantitative joint detection of four urinary micro proteins and a preparation method thereof, which solves the problems that the detection of urinary micro proteins in clinical detection cannot be simultaneously carried out. A fluorescence immunochromatographic kit for quantitative joint detection of four urinary micro proteins comprises an immunochromatographic strip coated with an albumin capture antibody, an alpha 1-microglobulin capture antibody, a transferrin capture antibody, a beta 2-microglobulin capture antibody anda protein A, and a fluorescent microsphere labeled antigen solution including a fluorescent microsphere labeled albumin solution, a fluorescent microsphere labeled alpha 1-microglobulin solution, a fluorescent microsphere labeled transferrin solution and a fluorescent microsphere labeled beta 2-microglobulin solution; and fluorescent microspheres are also labeled with IgG immunoglobulin. The invention has the advantages of rapid detection and the like.

The invention discloses a watering cart intelligent early warning scheduling system and method. The method comprises the steps: obtaining pollutant real-time monitoring data, meteorological data, a regional pollution source emission list and air quality real-time monitoring data, and carrying out the simulation prediction of the concentrations of various pollutants to obtain an air quality early warning prediction result; acquiring watering cart monitoring data; uploading and displaying the watering cart monitoring data in real time; planning a key prevention and control area, and issuing an emergency scheduling instruction in combination with an air quality early warning and forecasting result; the air quality real-time monitoring data, the meteorological data, the air quality early warning and forecasting result, the key prevention and control area data and the watering cart monitoring data are stored in a unified mode and displayed in a visualized mode; planning a working area rangeand a watering route of the watering cart, updating air quality real-time monitoring data, and dynamically scheduling the watering cart. According to the invention, orderly scheduling of the wateringcart is realized, and intelligent early warning scheduling of the watering cart and intelligent response feedback of the watering cart are realized.

A height position of a surface of a wafer can be detected accurately and stably without being affected by variation in a thin film formed on the surface of the wafer. An AF (autofocus) device irradiates the surface of the wafer W with an AF laser beam, detects reflection light thereof for each wavelength with a detection optical system. An AF signal processing unit outputs a displacement signal indicating displacement of the surface of the wafer to a control unit on the basis of a detection result of the detection optical system. Moreover, the AF device includes a focus optical system disposed in an irradiation optical path which is an optical path from the light source unit to a light converging lens. The focus optical system adjusts a light converging point of the AF laser beam in a wafer thickness direction.

An in-situ analyzer for nutritive salt and a nutritive salt content analyzing method are disclosed. The analyzer includes a microprocessor, drive components, a multi-ported valve, an injector, a colorimetric detector, a mixing ring, a sample pipeline, a pure water bin, a standard solution bin and various agent bins. The injector, the colorimetric detector, the mixing ring, the sample pipeline, thepure water bin, the standard solution bin and various agent bins are correspondingly connected to ports of the multi-ported valve. The microprocessor is connected to a first motor driver and a firstmotor in order and is then connected to an injection pump of the injector. The microprocessor is connected to a second motor driver and a second motor in order, is then connected to the multi-ported valve, and controls a multi-ported valve port connected to the injector and other ports in the multi-ported valve to be communicated in order. The colorimetric detector is connected to the microprocessor. The analyzer can achieve continuous automatic sampling and nutritive salt content analysis, can achieve on-line analysis of a plurality of components, and has advantage of a simple structure, powerful functions, high applicability and high reliability.

In a belt apparatus used for image formation structured such that processing unit used for image formation are placed around a belt extended between at least two rollers and at least one of the processing unit acts on a roller so as to impart a rotational load thereto, it is possible to avoid a reduction in the image quality of a transfer image on the belt caused by the roller that supports the belt receiving variations in the load due to the movement towards or away from the belt of a cleaning blade. A drive source is connected to the roller to which directly receiving the load variation making this roller the drive roller for the belt.

An image data processing unit in a visual inspection device includes a central area data extractor tracing two-dimensional image data to extract a average central brightness, a peripheral area data extractor tracing the two-dimensional image data to extract average central brightness data, a difference calculator for calculating differences between the central brightness data and the peripheral brightness data to create emphasized two-dimensional image data, and an unevenness detection section for detecting an uneven area in the two-dimensional image data based on the emphasized two-dimensional image data.

The invention discloses a method and device for detecting a flame. The method comprises the following steps: a candidate flame area in a current frame image is determined; the candidate flame area is subjected to real-time light stream calculation according to a grid algorithm to acquire light stream vectors of pixels in the candidate flame area; whether the flame exists is determined according to the distribution characters of the light stream vectors of the pixels in the candidate flame area in all directions. By means of the method and device for detecting the flame, flames can be detected accurately and stably in various complex or simple environments.

A time-division multiplexing radio system controls transmission power based on an adjacent-channel leakage power ratio with precision and stability. The system has a directional coupler arranged at an output stage of a power amplifier in a transmitter and that has outputs directed to an antenna and a receiver, and a reception RF switch arranged at an input stage of a frequency converter in a receiver and that has inputs directed to the antenna and the coupler. Under transmission, the switch is switched over to the coupler so that the receiver receives the present channel to detect transmission power thereof. Also the receiver is set to receive an adjacent channel under transmission, so that adjacent-channel leakage power is detected. Based on those pieces of detected information, the ratio is calculated. To make the power ratio meet a specified condition, the transmission power of the transmitter is controlled.

The embodiment of the invention provides a vehicle attitude calculation method and device. The vehicle attitude calculation method comprises the steps of obtaining positioning signals sent by at leasttwo positioning sensors; calculating position coordinates of the at least two positioning sensors according to the positioning signals; calculating and analyzing positioning information of any two positioning sensors in the position coordinates of the at least two positioning sensors based on a preset vehicle model to obtain an attitude vector between the any two positioning sensors; and calculating attitude and heading information of the automatic driving vehicle according to the attitude vector and a pre-established relative coordinate system, wherein the preset vehicle model includes position parameters of the positioning sensors at each predetermined position on the automatic driving vehicle. Therefore, relatively reliable and stable positioning data can be obtained even if some of the positioning sensors are abnormal. Meanwhile, the attitude can be detected stably and accurately based on the obtained positioning information, there is no need to separately set various attitude detection sensors, and thus the cost is greatly reduced.

The invention discloses a filter sealing performance automatic detection device, which comprises a feeding conveying mechanism, a filter sealing performance detection mechanism and a discharging conveying mechanism, wherein the filter sealing performance detection mechanism comprises a detection platform and an air hood arranged above the detection platform and capable of being pressed downwardly;an air nozzle is arranged in the air hood; a tightening structure capable of tightly pulling the port of the filter on the detection platform is arranged corresponding to the air hood; and the detection platform is provided with an air hole for feeding air to the cavity of the filter. According to the filter sealing performance automatic detection device disclosed in the invention, the device isreasonably designed, simultaneous and automatic sealing performance detection can be carried out on a group of filters, the operation is simple and convenient, the detection efficiency is greatly improved, a special filter end part sealing cover does not need to be arranged, and the detection is accurate and stable.

The invention provides a brake assembly with a corner type brake shoe friction plate abrasion alarm device. The brake assembly comprises a brake bottom plate, a cam shaft, an active brake shoe iron belt friction plate assembly, a driven brake shoe iron belt friction plate assembly, a cam support, a spring brake cylinder, an automatic adjusting arm, a brake friction plate abrasion alarm sensor andother parts. According to the brake assembly, the brake friction plate abrasion alarm sensor is used for detecting the adjustment angle difference value between the automatic adjusting arm and the camshaft to judge whether the brake shoe friction plate reaches the abrasion limit, a corner displacement signal is converted into an electric signal, and then the electric signal is converted into a sound, light and other signals to give an alarm to a driver in the driving room. According to the brake assembly, the brake assembly body does not need to be changed, only the cam shaft needs to be correspondingly changed, the abrasion limit of the brake shoe friction plate can be monitored, the brake friction plate abrasion alarm sensor can be repeatedly used, and the service life is long.